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Tratamiento con toxina botulínica tipo B para la distonía cervical

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Referencias

Referencias de los estudios incluidos en esta revisión

Brashear 1999 {published data only}

Brashear A, Lew MF, Dykstra DD, Comella CL, Factor SA, Rodnitzky RL, Trosch R, Singer C, Brin MF, Murray JJ, Wallace JD, Willmer‐Hulme A, Koller M. Safety and efficacy of NeuroBloc (Botulinum toxin type B) in type A‐responsive cervical dystonia. Neurology 1999;52 (Suppl 2):A292 (S46.003).
Brashear A, Lew MF, Dykstra DD, Comella CL, Factor SA, Rodnitzky RL, Trosch R, Singer C, Brin MF, Murray JJ, Wallace JD, Willmer‐Hulme A, Koller M. Safety and efficacy of NeuroBloc (Botulinum toxin type B) in type A‐responsive cervical dystonia. Neurology 1999;53(7):1439‐46.
Factor S. Safety and efficacy of Neurobloc (Botulinum toxin type‐B) in type‐A responsive and type‐A resistant patients with cervical dystonia. Toxins'99 (www.wemove.org). 9.
Factor S, Adler CH, Brashear A, Brin MF, Comella CL, Dykstra DD, Jankovic J, Lew MF, O'Brien C, Rodnitzky RL. Safety and efficacy of Neurobloc (Botulinum toxin type‐B) in type‐A responsive and type‐A resistant patients with cervical dystonia. Movement Disorders 2000;15 (Suppl 2):7.
Koller M, Wallace JD, Willmer‐Hulme A, Chiang P, Murray JJ. Evaluation of Neurobloc (Botulinum toxin type B) efficacy in patients with cervical dystonia. Movement Disorders 2000;15 (Suppl 2):31.
Lew MF, Brashear A, Factor S. The safety and efficacy of Botulinum toxin type B in the treatment of patients with cervical dystonia: summary of three controlled clinical trials. Neurology 2000;55 (Suppl 5):S29‐S35.

Brin 1999 {published data only}

Brin MF, Lew MF, Adler CH, Comella CL, Factor SA, Jankovic J, O'Brien C, Murray JJ, Wallace JD, Willmer‐Hulme A, Koller M. Safety and efficacy of NeuroBloc (Botulinum toxin type B) in type A‐resistant cervical dystonia. Neurology 1999;22;53(7):1431‐8.
Brin MF, Lew MF, Adler CH, Comella CL, Factor SA, Jankovic J, O'Brien C, Murray JJ, Wallace JD, Willmer‐Hulme A, Koller M. Safety and efficacy of NeuroBloc (Botulinum toxin type B) in type A‐resistant cervical dystonia. Neurology 1999;52 (Suppl 2):A293 (S46.004).
Factor S. Safety and efficacy of Neurobloc (Botulinum toxin type‐B) in type‐A responsive and type‐A resistant patients with cervical dystonia. Toxins'99 (www.wemove.org) 9.
Factor S, Adler CH, Brashear A, Brin MF, Comella CL, Dykstra DD, Jankovic J, Lew MF, O'Brien C, Rodnitzky RL. Safety and Efficacy of Neurobloc (Botulinum Toxin Type‐B) in Type‐A Responsive and Type‐A Resistant Patients with Cervical Dystonia. Movement Disorders 2000;15 (Suppl 2):7.
Koller M, Wallace JD, Willmer‐Hulme A, Chiang P, Murray JJ. Evaluation of Neuroblocc (Botulinum Toxin Type B) Efficacy in Patients With Cervical Dystonia. Mov Disord. 2000; Vol. 15 (Suppl 2):31.
Lew MF, Brashear A, Factor S. The safety and efficacy of botulinum toxin type B in the treatment of patients with cervical dystonia: summary of three controlled clinical trials. Neurology 2000;55 (Suppl 5):S29‐S35.

Lew 1997 {published data only}

Koller M, Wallace JD, Willmer‐Hulme A, Chiang P, Murray JJ. Evaluation of Neuroblocc (Botulinum toxin type B) efficacy in patients with cervical dystonia. Movement Disorders 2000;15 (Suppl 2):31.
Lew MF, Adornato BT, Duane DD, Dykstra DD, Factor SA, Massey JM, Brin MF, Jankovic J, Rodnitzky RL, Singer C, Swenson MR, Tarsy D, Murray JJ, Koller M, Wallace JD. Botulinum toxin type B: A double‐blind, placebo controlled, safety and efficacy study in cervical dystonia. Neurology 1997;49:701‐7.
Lew MF, Brashear A, Factor S. The safety and efficacy of Botulinum toxin type B in the treatment of patients with cervical dystonia: summary of three controlled clinical trials. Neurology 2000;55 (Suppl 5):S29‐S35.

Referencias de los estudios excluidos de esta revisión

AN072‐008 1995 {published data only}

American BotB Cervical Dystonia Study Group. BotB (Botulinum toxin type B) in the treatment of cervical dystonia (CD) ‐ protocol AN072‐008: an interim analysis. Movement Disorders 1995;10:2874 (abstract).
Koller M, Wallace JD, Willmer‐Hulme A, Chiang P, Murray JJ. Evaluation of Neuroblocc (Botulinum toxin type B) efficacy in patients with cervical dystonia. Movement Disorders 2000;15 (Suppl 2):31.

Cullis 2000 {published data only}

Cullis PA, Barnes M, Duane D, Chen RE, Freeman A, Fross R, Hammarstad J, Hyman N, Lees A, Massey J. Safety and tolerability of repeated doses of Neurobloc (Botulinum toxin type B) in patients with cervical dystonia: an open‐label, dose‐escalation study. Movement Disorders 2000;15 (Suppl 2):29.

Truong 1997 {published data only}

Truong DD, Cullis PA, O'Brien CF, Koller M, Villegas TP, Wallace JD. BotB (Botulinum Toxin Type B): Evaluation of safety and tolerability in Botulinum type A‐resistant cervical dystonia aatients (Preliminary Study). Movement Disorders 1997;12(5):772‐5.

Referencias adicionales

Altman 1996

Altman DG, Matthews JN. Statistics notes. Interaction 1: Heterogeneity of effects. BMJ 1996;313(7055):486.

Altman 2002

Altman DG, Deeks JJ. Meta‐analysis, Simpson's paradox, and the number needed to treat. BMC Medical Research Methodology 2002;2(1):3. Epub 2002 Jan 25.

Brin 2002

Brin. Scientific and Therapeutic Aspects of Botulinum Toxin. Philadelphia: Lippincott Williams & Wilkins, 2002.

Chan 1991

Chan J, Brin MF, Fanh S. Idiopathic cervical dystonia: clinical characteristics. Movement Disorders 1991;6:119‐26.

Costa 2000

Costa J, Ferreira JJ, Sampaio C. Botulinum toxin type A for the treatment of cervical dystonia: a systematic review. Movement Disorders 2000;15 (Suppl 3):29.

Cullis 1998

Cullis PA, O'Brien CF, Truong DD, Koller M, Villegas TP, Wallace JD. Botulinum toxin type B: an open‐label, dose‐escalation, safety and preliminary efficacy study in cervical dystonia patients. Advances in Neurology 1998;78:227‐30.

Eleopra 1997

Eleopra R, Tugnoli V, Rossetto O, Montecucco C, De Grandis D. Botulinum neurotoxin serotype C: a novel effective botulinum toxin therapy in human. Neuroscience Letters 1997;224(2):91‐4.

ESDE 2000

ESDE. The Epidemiological Study of Dystonia in Europe (ESDE) Collaborative Group. Journal of Neurology 2000;247:787‐92.

Foltz 1959

Foltz EL, Knopp LM, Ward AA. Experimental spasmodic torticollis. Journal of Neurosurgery 1959;16:55‐72.

Greene 1994b

Greene P, Fahn S, Diamond B. Development of resistance to botulinum toxin type A in patients with torticollis. Movement Disorders 1994;9(2):213‐7.

Greene 1993a

Greene PE, Fahn S. Use of botulinum toxin type F injections to treat torticollis in patients with immunity to botulinum toxin type A. Movement Disorders 1993;8(4):479‐83.

Jahnanshahi 1990

Jahnanshani M, Marion M‐H, Marsden CD. Natural history of adult‐onset idiopathic torticollis. Archives of Neurology 1990;47:548‐52.

Jankovic 1991a

Jankovic J, Leder S, Warner D, Schwartz K. Cervical dystonia: clinical findings and associated movement disorders. Neurology 1991;41:1088‐91.

Jankovic 1991b

Jankovic J, Schwartz KS. Clinical correlates of response to botulinum toxin injections. Archives of Neurology 1991;48(12):1253‐6.

Kanovsky 2003

Kanovsky P, Bares M, Streitova H, Klajblova H, Daniel P, Rektor I. Abnormalities of cortical excitability and cortical inhibition in cervical dystonia Evidence from somatosensory evoked potentials and paired transcranial magnetic stimulation recordings. Journal of Neurology 2003;250(1):42‐50.

Klier 2002

Klier EM, Wang H, Constantin AG, Crawford JD. Midbrain control of three‐dimensional head orientation. Science 2002;295(5558):1314‐6.

Kreyden 2002

Kreyden O.P. Botulinum Toxin: From Poison to Pharmaceutical The History of a Poison That Became Useful to Mankind. In Kreyden OP, Böni R, Burg G (eds): Hyperhidrosis and Botulinum Toxin in Dermatology. Curr Probl Dermatol. Basel, Karger, 2002, vol 30, pp 94‐100..

Nutt 1998

Nutt JG, Muenter MD, Melton LJ, Aronson A, Kurland LT. Epidemiology of focal and generalized dystonia in Rochester, Minnesota. Movement Disorders 1988;3(3):188‐94.

Smeeth 1999

Smeeth L, Haines A, Ebrahim S. Numbers needed to treat derived from meta‐analysis ‐ sometimes informative, usually misleading. BMJ 1999;318(7197):1548‐51.

Tarsy 1997

Tarsy D. Comparison of clinical rating scales in treatment of cervical dystonia with botulinum toxin. Movement Disorders 1997;12(1):100‐2.

Tsui 1986

Tsui, J.K.C, Eisen, A.J, Stoessl, A.J, Calne, S, Calne. D.B. Double‐blind study of botulinum toxin in spasmodic torticollis. Lancet 1986;ii:245‐247.

TWSTRS 1994

Consky ES, Lang AE. Clinical assessments of patients with cervical dystonia. Jankovic J, Hallett M. Therapy with Botulinum Toxin. New York, NY: Marcel Dekker, Inc, 1994:211‐237.

Zuber 1993

Zuber M, Sebald M, Bathien N, de Recondo J, Rondot P. Botulinum antibodies in dystonic patients treated with type A botulinum toxin: frequency and significance. Neurology 1993;43(9):1715‐8.

Characteristics of studies

Characteristics of included studies [ordered by study ID]

Brashear 1999

Methods

Randomised, multicentre, double‐blind, 3 arms, parallel, phase III study.Method of randomisation: master randomisation tables generated by an independent organization.Data analysed on intention‐to‐treat basis.Location: multiple centers in the USA.Duration: 16 weeks.

Participants

109 patients were enrolled.Placebo arm: 36 patients (2 withdrawals: 5.5%), 21 patients were female and 15 were male, mean age was 54.3±12.2 (sd) years, ethnicity: 32 white and 4 black, mean duration of symptoms not stated, mean TWSTRS‐Total score at baseline: 43.6±9(sd).BoNT/B 5000U arm: 36 patients (1 withdrawals: 2.7%), 18 patients were female and 18 were male, mean age was 57.6±12.3 (sd) years, ethnicity: 35 white and 1 black, mean duration of symptoms not stated, mean TWSTRS‐Total score at baseline: 46.4± 10.4 (sd).BoNT/B 10.000U arm: 37 patients (1 withdrawals: 2.7%), 28 patients were female and 9 were male, mean age was 56.2 ±11.8 (sd), ethnicity: 33 white and 4 black, mean duration of symptoms not stated, mean TWSTRS‐Total score at baseline: 46.9 ± 9.6 (sd).Inclusion criteria: Cervical Dystonia (CD) for at least 1 year with involvement of 2 or more neck muscles and responsive to BoNT/A treatment; TWSTRS‐Total score at baseline of at least 20 with at least a TWSTRS‐Severity score of at least 10, a TWRTRS‐Disability score of at least 3, and a TWSTRS‐Pain score of at least 1; Age more than 17 years‐old; Weight more than 45 Kg; Physical and neurological examinations and laboratory tests acceptable clinically; Informed consent.Exclusion criteria: BoNT injections in the previous 4 months for CD; Previous participation in BoNT/B trial; Neck contractures or cervical spine disease; Pure retrocollis or anterocollis; Use of drugs that could interfere with efficacy and security evaluations (e.g., narcotics, benzodiazepines); Acute or chronic medical condition or known drug hypersensitivity to the study drug; History of myotomy or denervation surgery of the neck; Previous tetanus toxoid in the last 4 months; History of clinically persistent neurological or neuromuscular disorder; and women of child‐bearing potential who were pregnant or breast‐feeding.

Interventions

The study drug (BoNT/B) was provided by Athenas Neurociences, Inc in vials that contained placebo or 5000U in a 1 ml sterile solution, buffered to a pH of 5.5, and refrigerated. Each patient was randomly assigned to one of the 3 groups: placebo, 5000U of BoNT/B or 10,000U BoNT/B. A total of 2 ml of the study drug was injected into 2 to 4 involved CD muscles selected by the investigator criteria with or without the use of electromyography. Based on the investigator judgement, the proportionate volume per muscle was divided and injected into one to five sites. Each patient received only one treatment.

Outcomes

The primary efficacy outcome was the change in TWSTRS‐Total score at week 4. Secondary efficacy outcomes included changes in 2 visual analog scales (Patient Global Assessment of Change and Principal investigator Global Assessment of Change) at week 4, and change in TWRTRS‐Total score at week 8 and 12. Tertiary efficacy outcomes included change in visual analog scale Patient Analog Pain Assessment at week 4, and changes in the TWRTRS subscales scores at week 4 and 16.For all outcomes data were collected at treatment visit (day 1), and at weeks 2, 4, 8, 12, and 16 (termination).Adverse events data were collected at each visit.

Notes

Reasons for withdrawal: in the placebo group 1 discontinued the study because of lack of effect and 1 patient due to request related with a new job; in the 5000U group 1 patient discontinued because of lack of effect; in the 10.000U group 1 patient discontinued because of a serious adverse effect (death following coronary artery bypass surgery).Results are presented as variance of the means of the various outcome scales scores without individual data.An estimation of duration of treatment effect was made based on time to return to baseline TWRTRS‐Total score.

Risk of bias

Bias

Authors' judgement

Support for judgement

Allocation concealment?

Low risk

A ‐ Adequate

Brin 1999

Methods

Randomised, multicenter, placebo‐controlled, double‐blind, 2 arm, parallel, phase III study.Method of randomisation: master randomisation tables generated by an independent organization.Data analysed on an intention‐to‐treat basis.Location: seven centers in the USA.Duration: 16 weeks.

Participants

77 patients were enrolled.Placebo arm: 38 patients (1 withdrawals: 2.6%); 26 patients were female and 12 were male; mean age was 52.6±13.3 (sd) years; ethnicity: all patients were Caucasian; mean duration of symptoms not stated; mean TWSTRS‐Total score at baseline: 51.2±9.5 (sd).BoNT/B 10.000U arm: 39 patients (0 withdrawals); 27 patients were female and 12 were male; mean age was 56.6 ±11.7 (sd); ethnicity: all patients were Caucasian; mean duration of symptoms not stated; mean TWSTRS‐Total score at baseline: 52.8 ± 8.6 (sd).Inclusion criteria: Cervical Dystonia (CD) for at least 1 year of duration with involvement of 2 or more neck muscles, and considered clinically resistant to BoNT/A treatment with an appropriate frontalis‐type A test result; TWSTRS‐Total score at baseline of at least 20 with at least a TWSTRS‐Severity score of at least 10, a TWRTRS‐Disability score of of at least 3, and a TWSTRS‐Pain score of at least 1; Age more than 17 years‐old; Weight more than 45 Kg; Physical and neurological examinations and laboratory tests acceptable clinically; Informed consent.Exclusion criteria: BoNT injections in the previous 4 months for CD; previous participation in a BoNT/B trial; Neck contractures or cervical spine disease that limit range of motion; Pure retrocollis or anterocollis; Use of drugs that could interfere with efficacy and security evaluations (e.g., narcotics, benzodiazepines); Previous tetanus toxoid in the last 4 months; Use of any investigational drug or device within 30 days of entry into the study; Current acute or chronic medical condition or known drug hypersensitivity to the study drug that would preclude BoNT injections; History of myotomy or denervation surgery of the neck; History of clinically persistent neurological or neuromuscular disorder; and women of child‐bearing potential who were pregnant or breast‐feeding.

Interventions

The study drug (BoNT/B) was provided by Athenas Neurociences, Inc in vials that contained placebo or 5000U of BoNT/B in a 1 ml sterile solution. Each patient was randomly assigned to one of the 2 groups: placebo or 10,000U BoNT/B. A total of 2 ml of the study drug was injected into 2 to 4 involved CD muscles selected by the investigator criteria with or without the use of electromyography. Based on the investigator judgement, the proportionate volume per muscle was divided and injected into one to five sites. Each patient received only one treatment.

Outcomes

The primary efficacy outcome was the change in TWSTRS‐Total score at week 4. Secondary efficacy outcomes included changes in 2 visual analog scales (Patient Global Assessment of Change and Principal investigator Global Assessment of Change) at week 4, and change in TWRTRS‐Total score at week 8 and 12. Tertiary efficacy outcomes included change in visual analog scale Patient Analog Pain Assessment at week 4, changes in the TWRTRS subscales scores at week 4, and change in TWRTRS‐Total score at week 16.All outcomes data were collected at treatment visit (day 1), and at weeks 2, 4, 8, 12, and 16 (termination). The results of the primary outcome were used to assess the duration of clinical benefit.Adverse events data were collected at each visit.

Notes

Reasons for withdrawal: in the placebo group 1 discontinued the study because of an adverse effect. Results are presented as variance of the means of the various outcome scales scores without individual data.An estimation of duration of treatment effect was made based on time to return to baseline TWRTRS‐Total score.

Risk of bias

Bias

Authors' judgement

Support for judgement

Allocation concealment?

Low risk

A ‐ Adequate

Lew 1997

Methods

Randomised, multicenter, placebo‐controlled, double‐blind, 4 arm, parallel, phase II study.Method of randomisation: not described.Data analysed on an intention‐to‐treat basis.Location: multiple centers in the USA.Duration: 16 weeks.

Participants

122 patients age 19 to 81 years were enrolled. 67% of the patients were female. 97% were Caucasian, 1.6% were Hispanic and 1.6% were Afro‐American. 79% were responsive to BoNT/A treatment and 21% were BoNt/A resistant.Placebo arm: 30 patients, mean duration of symptoms not stated, mean TWSTRS‐Total score was 45.5.BoNT/B 2500U arm: 31 patients, mean duration of symptoms not stated, mean TWSTRS‐Total score at baseline was 45.6.BoNT/B 5000U arm: 31 patients, mean duration of symptoms not stated, mean TWSTRS‐Total score at baseline was 45.2.BoNT/B 10,000U arm: 30 patients, mean duration of symptoms not stated, mean TWSTRS‐Total score at baseline was 47.5.Inclusion criteria: Idiopathic Cervical Dystonia (CD) of 1 to 10 years duration with involvement of 2 or more neck muscles, either responsive or resistance to BoNT/A treatment; TWSTRS‐Total score at baseline of at least 20 with at least a TWSTRS‐Severity score of at least 10, a TWRTRS‐Disability score of of at least 3, and a TWSTRS‐Pain score of at least 1; Age more than 17 years‐old; Weight more than 45 Kg; Physical and neurological examinations and laboratory tests acceptable clinically; Informed consent.Exclusion criteria: Primary nonresponder to BoNT/A injection; BoNT injections in the previous 4 months for CD; No return to intertreatment baseline clinical dystonia status; Neck contractures or cervical spine disease that limit range of motion; Pure retrocollis or anterocollis; Use of drugs that could interfere with efficacy and security evaluations (e.g., narcotics, benzodiazepines); Use of aminoglycosides or any investigational drug or device within 30 days of entry into the study; Current acute or chronic medical condition or known drug hypersensitivity to the study drug that would preclude BoNT injections; History of myotomy or denervation surgery of the neck; History of clinically persistent neurological or neuromuscular disorder; and women pregnant or nursing.

Interventions

The study drug (BoNT/B) was provided by Athenas Neurociences, Inc in vials that contained placebo, 2500U or 5000U of BoNT/B in a 1 ml sterile solution. Each patient was randomly assigned to one of the 4 groups: placebo, 2500U, 5000U or 10,000U BoNT/B. A total of 2 ml of the study drug was injected into 2 to 4 involved CD muscles selected by the investigator criteria with or without the use of electromyography. The study drug (in a volume of 2 ml) could be further diluted by adding 0.9% sterile normal saline without preservative up to a maximal final volume of 5 ml. Each patient received only one treatment.

Outcomes

The primary efficacy outcome was the change in TWSTRS‐Total score at week 4. Secondary efficacy outcomes included changes in 3 visual analog scales (Patient Global Assessment of Change, Patient Analog Pain Assessment, and Principal investigator Global Assessment of Change) at week 4, changes in the TWRTRS subscales scores at week 4, change in TWRTRS‐Total score at week 8, 12 and 16, and change in Sickness Impact Profile (SIP) at week 4.With the exception of SIP all outcomes data were collected at treatment visit (day 1), and at weeks 2, 4, 8, 12, and 16 (termination). The results of the primary outcome were used to assess the duration of clinical benefit.Adverse events data were collected through spontaneously report and investigator‐elicited at each visit.BoNT/B antibodies were determined by ELISA at baseline and week 4.

Notes

All patients completed the study per the protocol.

Risk of bias

Bias

Authors' judgement

Support for judgement

Allocation concealment?

Low risk

A ‐ Adequate

Characteristics of excluded studies [ordered by study ID]

Study

Reason for exclusion

AN072‐008 1995

This is a randomised, multicentre (USA), double‐blind, placebo‐controlled, single dose, 4‐arm, dose‐finding parallel group design study. The follow‐up was 16 weeks. 85 patients were enrolled. Mean age was 53.2 years (18‐80). 38% of the patients were male and 62% were female. 95% were of white ethnicity. The study included both BNT/A responsive and resistant patients. The study drug (BoNT/B) was provided by Athenas Neurociences, Inc. Each patient was randomly assigned to one of the 4 groups: placebo, 400U, 1200U or 2400U of BoNT/B. the study drug was injected into 2 to 4 superficial neck and/or shoulder muscle groups. Each patient received only one treatment. The primary efficacy outcome was the change in TWSTRS‐Total score (range 0 to 87). One patient in the placebo group withdrew because of an adverse effect.This study was excluded because data was not available.

Cullis 2000

145 patients were enrolled. The study was open‐label and compared 3 different doses of BNT/B without a placebo group.

Truong 1997

12 patients were enrolled. The study was open‐label and compared different doses of BNT/B without a placebo group.

Data and analyses

Open in table viewer
Comparison 1. Improvement of at least 20% in TWSTRS‐Total score at week 4

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 2500 U BtB versus Placebo Show forest plot

1

61

Peto Odds Ratio (Peto, Fixed, 95% CI)

3.45 [1.26, 9.41]

Analysis 1.1

Comparison 1 Improvement of at least 20% in TWSTRS‐Total score at week 4, Outcome 1 2500 U BtB versus Placebo.

Comparison 1 Improvement of at least 20% in TWSTRS‐Total score at week 4, Outcome 1 2500 U BtB versus Placebo.

1.1 BtA responder patients

1

44

Peto Odds Ratio (Peto, Fixed, 95% CI)

3.57 [1.10, 11.56]

1.2 BtA resistant or non‐responder patients

1

17

Peto Odds Ratio (Peto, Fixed, 95% CI)

3.14 [0.45, 21.72]

2 5000 U BtB versus Placebo Show forest plot

1

61

Peto Odds Ratio (Peto, Fixed, 95% CI)

4.03 [1.48, 10.97]

Analysis 1.2

Comparison 1 Improvement of at least 20% in TWSTRS‐Total score at week 4, Outcome 2 5000 U BtB versus Placebo.

Comparison 1 Improvement of at least 20% in TWSTRS‐Total score at week 4, Outcome 2 5000 U BtB versus Placebo.

2.1 BtA responder patients

1

46

Peto Odds Ratio (Peto, Fixed, 95% CI)

2.98 [0.94, 9.48]

2.2 BtA resistant or non‐responder patients

1

15

Peto Odds Ratio (Peto, Fixed, 95% CI)

9.89 [1.34, 73.12]

3 10,000 U BtB versus Placebo Show forest plot

1

60

Peto Odds Ratio (Peto, Fixed, 95% CI)

6.93 [2.55, 18.83]

Analysis 1.3

Comparison 1 Improvement of at least 20% in TWSTRS‐Total score at week 4, Outcome 3 10,000 U BtB versus Placebo.

Comparison 1 Improvement of at least 20% in TWSTRS‐Total score at week 4, Outcome 3 10,000 U BtB versus Placebo.

3.1 BtA responder patients

1

40

Peto Odds Ratio (Peto, Fixed, 95% CI)

5.81 [1.71, 19.79]

3.2 BtA resistant or non‐responder patients

1

20

Peto Odds Ratio (Peto, Fixed, 95% CI)

9.85 [1.75, 55.34]

4 BtB (2500‐10,000U) versus Placebo Show forest plot

1

122

Peto Odds Ratio (Peto, Fixed, 95% CI)

4.69 [2.06, 10.69]

Analysis 1.4

Comparison 1 Improvement of at least 20% in TWSTRS‐Total score at week 4, Outcome 4 BtB (2500‐10,000U) versus Placebo.

Comparison 1 Improvement of at least 20% in TWSTRS‐Total score at week 4, Outcome 4 BtB (2500‐10,000U) versus Placebo.

4.1 BtA responder patients

1

88

Peto Odds Ratio (Peto, Fixed, 95% CI)

3.90 [1.46, 10.37]

4.2 BtA resistant or non‐responder patients

1

34

Peto Odds Ratio (Peto, Fixed, 95% CI)

7.35 [1.60, 33.78]

5 BtB (2500‐5000 U) versus BNT/B (10,000 U) Show forest plot

1

92

Peto Odds Ratio (Peto, Fixed, 95% CI)

0.50 [0.20, 1.25]

Analysis 1.5

Comparison 1 Improvement of at least 20% in TWSTRS‐Total score at week 4, Outcome 5 BtB (2500‐5000 U) versus BNT/B (10,000 U).

Comparison 1 Improvement of at least 20% in TWSTRS‐Total score at week 4, Outcome 5 BtB (2500‐5000 U) versus BNT/B (10,000 U).

5.1 BtA responder patients

1

67

Peto Odds Ratio (Peto, Fixed, 95% CI)

0.52 [0.18, 1.56]

5.2 BtA resistant or non‐responder patients

1

25

Peto Odds Ratio (Peto, Fixed, 95% CI)

0.43 [0.08, 2.43]

Open in table viewer
Comparison 2. Improvement of at least 20% in TWSTRS‐Total score at week 8

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 2500 U BtB versus Placebo Show forest plot

1

61

Peto Odds Ratio (Peto, Fixed, 95% CI)

2.60 [0.84, 8.07]

Analysis 2.1

Comparison 2 Improvement of at least 20% in TWSTRS‐Total score at week 8, Outcome 1 2500 U BtB versus Placebo.

Comparison 2 Improvement of at least 20% in TWSTRS‐Total score at week 8, Outcome 1 2500 U BtB versus Placebo.

2 5000 U BtB versus Placebo Show forest plot

1

61

Peto Odds Ratio (Peto, Fixed, 95% CI)

3.30 [1.11, 9.84]

Analysis 2.2

Comparison 2 Improvement of at least 20% in TWSTRS‐Total score at week 8, Outcome 2 5000 U BtB versus Placebo.

Comparison 2 Improvement of at least 20% in TWSTRS‐Total score at week 8, Outcome 2 5000 U BtB versus Placebo.

3 10,000 U BtB versus Placebo Show forest plot

1

60

Peto Odds Ratio (Peto, Fixed, 95% CI)

4.88 [1.70, 13.97]

Analysis 2.3

Comparison 2 Improvement of at least 20% in TWSTRS‐Total score at week 8, Outcome 3 10,000 U BtB versus Placebo.

Comparison 2 Improvement of at least 20% in TWSTRS‐Total score at week 8, Outcome 3 10,000 U BtB versus Placebo.

4 BtB (2500‐10,000 U) versus Placebo Show forest plot

1

122

Peto Odds Ratio (Peto, Fixed, 95% CI)

3.13 [1.34, 7.34]

Analysis 2.4

Comparison 2 Improvement of at least 20% in TWSTRS‐Total score at week 8, Outcome 4 BtB (2500‐10,000 U) versus Placebo.

Comparison 2 Improvement of at least 20% in TWSTRS‐Total score at week 8, Outcome 4 BtB (2500‐10,000 U) versus Placebo.

5 BtB (2500‐5000 U) versus BtB (10,000 U) Show forest plot

1

92

Peto Odds Ratio (Peto, Fixed, 95% CI)

0.56 [0.23, 1.33]

Analysis 2.5

Comparison 2 Improvement of at least 20% in TWSTRS‐Total score at week 8, Outcome 5 BtB (2500‐5000 U) versus BtB (10,000 U).

Comparison 2 Improvement of at least 20% in TWSTRS‐Total score at week 8, Outcome 5 BtB (2500‐5000 U) versus BtB (10,000 U).

Open in table viewer
Comparison 3. Improvement of at least 20% in TWSTRS‐Total score at week 12

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 2500 U BtB versus Placebo Show forest plot

1

61

Peto Odds Ratio (Peto, Fixed, 95% CI)

1.70 [0.39, 7.42]

Analysis 3.1

Comparison 3 Improvement of at least 20% in TWSTRS‐Total score at week 12, Outcome 1 2500 U BtB versus Placebo.

Comparison 3 Improvement of at least 20% in TWSTRS‐Total score at week 12, Outcome 1 2500 U BtB versus Placebo.

2 5000 U BtB versus Placebo Show forest plot

1

61

Peto Odds Ratio (Peto, Fixed, 95% CI)

3.27 [0.93, 11.44]

Analysis 3.2

Comparison 3 Improvement of at least 20% in TWSTRS‐Total score at week 12, Outcome 2 5000 U BtB versus Placebo.

Comparison 3 Improvement of at least 20% in TWSTRS‐Total score at week 12, Outcome 2 5000 U BtB versus Placebo.

3 10,000 U BtB vs Placebo Show forest plot

1

60

Peto Odds Ratio (Peto, Fixed, 95% CI)

3.42 [0.97, 11.99]

Analysis 3.3

Comparison 3 Improvement of at least 20% in TWSTRS‐Total score at week 12, Outcome 3 10,000 U BtB vs Placebo.

Comparison 3 Improvement of at least 20% in TWSTRS‐Total score at week 12, Outcome 3 10,000 U BtB vs Placebo.

4 BtB (2500‐10,000U) versus Placebo Show forest plot

1

122

Peto Odds Ratio (Peto, Fixed, 95% CI)

2.43 [0.89, 6.61]

Analysis 3.4

Comparison 3 Improvement of at least 20% in TWSTRS‐Total score at week 12, Outcome 4 BtB (2500‐10,000U) versus Placebo.

Comparison 3 Improvement of at least 20% in TWSTRS‐Total score at week 12, Outcome 4 BtB (2500‐10,000U) versus Placebo.

5 BtB (2500‐5000 U) versus BtB (10,000 U) Show forest plot

1

92

Peto Odds Ratio (Peto, Fixed, 95% CI)

0.68 [0.25, 1.84]

Analysis 3.5

Comparison 3 Improvement of at least 20% in TWSTRS‐Total score at week 12, Outcome 5 BtB (2500‐5000 U) versus BtB (10,000 U).

Comparison 3 Improvement of at least 20% in TWSTRS‐Total score at week 12, Outcome 5 BtB (2500‐5000 U) versus BtB (10,000 U).

Open in table viewer
Comparison 4. Improvement of at least 20% in TWSTRS‐Total score at week 16

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 2500 U BtB versus Placebo Show forest plot

1

61

Peto Odds Ratio (Peto, Fixed, 95% CI)

0.48 [0.05, 4.85]

Analysis 4.1

Comparison 4 Improvement of at least 20% in TWSTRS‐Total score at week 16, Outcome 1 2500 U BtB versus Placebo.

Comparison 4 Improvement of at least 20% in TWSTRS‐Total score at week 16, Outcome 1 2500 U BtB versus Placebo.

2 5000 U BtB versus Placebo Show forest plot

1

61

Peto Odds Ratio (Peto, Fixed, 95% CI)

2.99 [0.68, 13.07]

Analysis 4.2

Comparison 4 Improvement of at least 20% in TWSTRS‐Total score at week 16, Outcome 2 5000 U BtB versus Placebo.

Comparison 4 Improvement of at least 20% in TWSTRS‐Total score at week 16, Outcome 2 5000 U BtB versus Placebo.

3 10,000 U BtB versus Placebo Show forest plot

1

60

Peto Odds Ratio (Peto, Fixed, 95% CI)

2.60 [0.54, 12.40]

Analysis 4.3

Comparison 4 Improvement of at least 20% in TWSTRS‐Total score at week 16, Outcome 3 10,000 U BtB versus Placebo.

Comparison 4 Improvement of at least 20% in TWSTRS‐Total score at week 16, Outcome 3 10,000 U BtB versus Placebo.

4 BtB (2500‐10,000 U) versus Placebo Show forest plot

1

122

Peto Odds Ratio (Peto, Fixed, 95% CI)

1.86 [0.51, 6.75]

Analysis 4.4

Comparison 4 Improvement of at least 20% in TWSTRS‐Total score at week 16, Outcome 4 BtB (2500‐10,000 U) versus Placebo.

Comparison 4 Improvement of at least 20% in TWSTRS‐Total score at week 16, Outcome 4 BtB (2500‐10,000 U) versus Placebo.

5 BtB (2500‐5000 U) versus BtB (10,000 U) Show forest plot

1

92

Peto Odds Ratio (Peto, Fixed, 95% CI)

0.63 [0.17, 2.27]

Analysis 4.5

Comparison 4 Improvement of at least 20% in TWSTRS‐Total score at week 16, Outcome 5 BtB (2500‐5000 U) versus BtB (10,000 U).

Comparison 4 Improvement of at least 20% in TWSTRS‐Total score at week 16, Outcome 5 BtB (2500‐5000 U) versus BtB (10,000 U).

Open in table viewer
Comparison 5. Improvement in TWSTRS‐Severity score at week 4

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 2500 U BtB versus Placebo Show forest plot

1

61

Peto Odds Ratio (Peto, Fixed, 95% CI)

2.59 [0.91, 7.38]

Analysis 5.1

Comparison 5 Improvement in TWSTRS‐Severity score at week 4, Outcome 1 2500 U BtB versus Placebo.

Comparison 5 Improvement in TWSTRS‐Severity score at week 4, Outcome 1 2500 U BtB versus Placebo.

2 5000 U BtB versus Placebo Show forest plot

1

61

Peto Odds Ratio (Peto, Fixed, 95% CI)

4.60 [1.68, 12.60]

Analysis 5.2

Comparison 5 Improvement in TWSTRS‐Severity score at week 4, Outcome 2 5000 U BtB versus Placebo.

Comparison 5 Improvement in TWSTRS‐Severity score at week 4, Outcome 2 5000 U BtB versus Placebo.

3 10,000 U BtB versus Placebo Show forest plot

1

60

Peto Odds Ratio (Peto, Fixed, 95% CI)

3.09 [1.09, 8.76]

Analysis 5.3

Comparison 5 Improvement in TWSTRS‐Severity score at week 4, Outcome 3 10,000 U BtB versus Placebo.

Comparison 5 Improvement in TWSTRS‐Severity score at week 4, Outcome 3 10,000 U BtB versus Placebo.

4 BtB (2500‐10,000 U) versus Placebo Show forest plot

1

122

Peto Odds Ratio (Peto, Fixed, 95% CI)

3.18 [1.39, 7.24]

Analysis 5.4

Comparison 5 Improvement in TWSTRS‐Severity score at week 4, Outcome 4 BtB (2500‐10,000 U) versus Placebo.

Comparison 5 Improvement in TWSTRS‐Severity score at week 4, Outcome 4 BtB (2500‐10,000 U) versus Placebo.

5 BtB (2500‐5000 U) versus BtB (10,000 U) Show forest plot

1

92

Peto Odds Ratio (Peto, Fixed, 95% CI)

1.14 [0.48, 2.71]

Analysis 5.5

Comparison 5 Improvement in TWSTRS‐Severity score at week 4, Outcome 5 BtB (2500‐5000 U) versus BtB (10,000 U).

Comparison 5 Improvement in TWSTRS‐Severity score at week 4, Outcome 5 BtB (2500‐5000 U) versus BtB (10,000 U).

Open in table viewer
Comparison 6. Improvement in TWSTRS‐Disability score at week 4

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 2500 U BtB versus Placebo Show forest plot

1

61

Peto Odds Ratio (Peto, Fixed, 95% CI)

4.30 [1.54, 12.01]

Analysis 6.1

Comparison 6 Improvement in TWSTRS‐Disability score at week 4, Outcome 1 2500 U BtB versus Placebo.

Comparison 6 Improvement in TWSTRS‐Disability score at week 4, Outcome 1 2500 U BtB versus Placebo.

2 5000 U BtB versuss Placebo Show forest plot

1

61

Peto Odds Ratio (Peto, Fixed, 95% CI)

3.07 [1.06, 8.88]

Analysis 6.2

Comparison 6 Improvement in TWSTRS‐Disability score at week 4, Outcome 2 5000 U BtB versuss Placebo.

Comparison 6 Improvement in TWSTRS‐Disability score at week 4, Outcome 2 5000 U BtB versuss Placebo.

3 10,000 U BtB versus Placebo Show forest plot

1

60

Peto Odds Ratio (Peto, Fixed, 95% CI)

6.48 [2.35, 17.84]

Analysis 6.3

Comparison 6 Improvement in TWSTRS‐Disability score at week 4, Outcome 3 10,000 U BtB versus Placebo.

Comparison 6 Improvement in TWSTRS‐Disability score at week 4, Outcome 3 10,000 U BtB versus Placebo.

4 BtB (2500‐10,000 U) versus Placebo Show forest plot

1

122

Peto Odds Ratio (Peto, Fixed, 95% CI)

4.10 [1.80, 9.34]

Analysis 6.4

Comparison 6 Improvement in TWSTRS‐Disability score at week 4, Outcome 4 BtB (2500‐10,000 U) versus Placebo.

Comparison 6 Improvement in TWSTRS‐Disability score at week 4, Outcome 4 BtB (2500‐10,000 U) versus Placebo.

5 BtB (2500‐5000 U) versus BtB (10,000 U) Show forest plot

1

92

Peto Odds Ratio (Peto, Fixed, 95% CI)

0.51 [0.21, 1.23]

Analysis 6.5

Comparison 6 Improvement in TWSTRS‐Disability score at week 4, Outcome 5 BtB (2500‐5000 U) versus BtB (10,000 U).

Comparison 6 Improvement in TWSTRS‐Disability score at week 4, Outcome 5 BtB (2500‐5000 U) versus BtB (10,000 U).

Open in table viewer
Comparison 7. Improvement in TWSTRS‐Pain score at week 4

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 2500 U BtB versus Placebo Show forest plot

1

61

Peto Odds Ratio (Peto, Fixed, 95% CI)

2.31 [0.85, 6.26]

Analysis 7.1

Comparison 7 Improvement in TWSTRS‐Pain score at week 4, Outcome 1 2500 U BtB versus Placebo.

Comparison 7 Improvement in TWSTRS‐Pain score at week 4, Outcome 1 2500 U BtB versus Placebo.

2 5000 U BtB versus Placebo Show forest plot

1

61

Peto Odds Ratio (Peto, Fixed, 95% CI)

2.63 [0.97, 7.13]

Analysis 7.2

Comparison 7 Improvement in TWSTRS‐Pain score at week 4, Outcome 2 5000 U BtB versus Placebo.

Comparison 7 Improvement in TWSTRS‐Pain score at week 4, Outcome 2 5000 U BtB versus Placebo.

3 10,000 U BtB versus Placebo Show forest plot

1

60

Peto Odds Ratio (Peto, Fixed, 95% CI)

6.07 [2.16, 17.03]

Analysis 7.3

Comparison 7 Improvement in TWSTRS‐Pain score at week 4, Outcome 3 10,000 U BtB versus Placebo.

Comparison 7 Improvement in TWSTRS‐Pain score at week 4, Outcome 3 10,000 U BtB versus Placebo.

4 BtB (2500‐10,000U) versus Placebo Show forest plot

1

122

Peto Odds Ratio (Peto, Fixed, 95% CI)

3.48 [1.49, 8.13]

Analysis 7.4

Comparison 7 Improvement in TWSTRS‐Pain score at week 4, Outcome 4 BtB (2500‐10,000U) versus Placebo.

Comparison 7 Improvement in TWSTRS‐Pain score at week 4, Outcome 4 BtB (2500‐10,000U) versus Placebo.

5 BtB (2500‐5000 U) versus BtB (10,000 U) Show forest plot

1

92

Peto Odds Ratio (Peto, Fixed, 95% CI)

0.39 [0.15, 0.99]

Analysis 7.5

Comparison 7 Improvement in TWSTRS‐Pain score at week 4, Outcome 5 BtB (2500‐5000 U) versus BtB (10,000 U).

Comparison 7 Improvement in TWSTRS‐Pain score at week 4, Outcome 5 BtB (2500‐5000 U) versus BtB (10,000 U).

Open in table viewer
Comparison 8. TWSTRS‐Total score at week 4

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 10,000U BtB versus Placebo Show forest plot

2

150

Mean Difference (IV, Fixed, 95% CI)

‐5.92 [‐9.61, ‐2.23]

Analysis 8.1

Comparison 8 TWSTRS‐Total score at week 4, Outcome 1 10,000U BtB versus Placebo.

Comparison 8 TWSTRS‐Total score at week 4, Outcome 1 10,000U BtB versus Placebo.

1.1 BtA resistant patients

1

77

Mean Difference (IV, Fixed, 95% CI)

‐7.40 [‐12.38, ‐2.42]

1.2 BtA responder patients

1

73

Mean Difference (IV, Fixed, 95% CI)

‐4.10 [‐9.61, 1.41]

2 5000 U BtB versus Placebo Show forest plot

1

72

Mean Difference (IV, Fixed, 95% CI)

‐2.20 [‐8.44, 4.04]

Analysis 8.2

Comparison 8 TWSTRS‐Total score at week 4, Outcome 2 5000 U BtB versus Placebo.

Comparison 8 TWSTRS‐Total score at week 4, Outcome 2 5000 U BtB versus Placebo.

2.1 BtA responder patients

1

72

Mean Difference (IV, Fixed, 95% CI)

‐2.20 [‐8.44, 4.04]

3 10,000U BtB versus 5000 U BoNT/B Show forest plot

1

73

Mean Difference (IV, Fixed, 95% CI)

‐1.90 [‐8.23, 4.43]

Analysis 8.3

Comparison 8 TWSTRS‐Total score at week 4, Outcome 3 10,000U BtB versus 5000 U BoNT/B.

Comparison 8 TWSTRS‐Total score at week 4, Outcome 3 10,000U BtB versus 5000 U BoNT/B.

3.1 BtA responder patients

1

73

Mean Difference (IV, Fixed, 95% CI)

‐1.90 [‐8.23, 4.43]

Open in table viewer
Comparison 9. TWSTRS‐Total score at week 8

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 10,000U BtB versus Placebo Show forest plot

2

150

Mean Difference (IV, Fixed, 95% CI)

‐4.46 [‐8.19, ‐0.73]

Analysis 9.1

Comparison 9 TWSTRS‐Total score at week 8, Outcome 1 10,000U BtB versus Placebo.

Comparison 9 TWSTRS‐Total score at week 8, Outcome 1 10,000U BtB versus Placebo.

1.1 BtA resistant patients

1

77

Mean Difference (IV, Fixed, 95% CI)

‐5.5 [‐10.26, ‐0.74]

1.2 BtA responder patients

1

73

Mean Difference (IV, Fixed, 95% CI)

‐2.80 [‐8.81, 3.21]

2 5000 U BtB versus Placebo Show forest plot

1

72

Mean Difference (IV, Fixed, 95% CI)

‐1.90 [‐8.30, 4.50]

Analysis 9.2

Comparison 9 TWSTRS‐Total score at week 8, Outcome 2 5000 U BtB versus Placebo.

Comparison 9 TWSTRS‐Total score at week 8, Outcome 2 5000 U BtB versus Placebo.

2.1 BtA responder patients

1

72

Mean Difference (IV, Fixed, 95% CI)

‐1.90 [‐8.30, 4.50]

3 10,000 U BtB versus 5000 U BtB Show forest plot

1

73

Mean Difference (IV, Fixed, 95% CI)

‐0.90 [‐7.13, 5.33]

Analysis 9.3

Comparison 9 TWSTRS‐Total score at week 8, Outcome 3 10,000 U BtB versus 5000 U BtB.

Comparison 9 TWSTRS‐Total score at week 8, Outcome 3 10,000 U BtB versus 5000 U BtB.

3.1 BtA responder patients

1

73

Mean Difference (IV, Fixed, 95% CI)

‐0.90 [‐7.13, 5.33]

Open in table viewer
Comparison 10. TWSTRS‐Total score at week 12

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 10,000 U BtB versus Placebo Show forest plot

2

150

Mean Difference (IV, Fixed, 95% CI)

‐1.72 [‐5.57, 2.13]

Analysis 10.1

Comparison 10 TWSTRS‐Total score at week 12, Outcome 1 10,000 U BtB versus Placebo.

Comparison 10 TWSTRS‐Total score at week 12, Outcome 1 10,000 U BtB versus Placebo.

1.1 BtA resistant patients

1

77

Mean Difference (IV, Fixed, 95% CI)

‐3.70 [‐8.95, 1.55]

1.2 BtA responder patients

1

73

Mean Difference (IV, Fixed, 95% CI)

0.60 [‐5.07, 6.27]

2 5000 U BtB versus Placebo Show forest plot

1

72

Mean Difference (IV, Fixed, 95% CI)

0.70 [‐5.10, 6.50]

Analysis 10.2

Comparison 10 TWSTRS‐Total score at week 12, Outcome 2 5000 U BtB versus Placebo.

Comparison 10 TWSTRS‐Total score at week 12, Outcome 2 5000 U BtB versus Placebo.

2.1 BtA responder patients

1

72

Mean Difference (IV, Fixed, 95% CI)

0.70 [‐5.10, 6.50]

3 10,000U BtB versus 5000 U BtB Show forest plot

1

73

Mean Difference (IV, Fixed, 95% CI)

‐0.10 [‐5.75, 5.55]

Analysis 10.3

Comparison 10 TWSTRS‐Total score at week 12, Outcome 3 10,000U BtB versus 5000 U BtB.

Comparison 10 TWSTRS‐Total score at week 12, Outcome 3 10,000U BtB versus 5000 U BtB.

3.1 BtA responder patients

1

73

Mean Difference (IV, Fixed, 95% CI)

‐0.10 [‐5.75, 5.55]

Open in table viewer
Comparison 11. TWSTRS‐Total score at week 16

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 10,000U BtB versus Placebo Show forest plot

2

150

Mean Difference (IV, Fixed, 95% CI)

1.54 [‐2.21, 5.30]

Analysis 11.1

Comparison 11 TWSTRS‐Total score at week 16, Outcome 1 10,000U BtB versus Placebo.

Comparison 11 TWSTRS‐Total score at week 16, Outcome 1 10,000U BtB versus Placebo.

1.1 BtA resistant patients

1

77

Mean Difference (IV, Fixed, 95% CI)

‐1.30 [‐6.40, 3.80]

1.2 BtA responder patients

1

73

Mean Difference (IV, Fixed, 95% CI)

4.90 [‐0.65, 10.45]

2 5000 U BtB versus Placebo Show forest plot

1

72

Mean Difference (IV, Fixed, 95% CI)

2.20 [‐3.77, 8.17]

Analysis 11.2

Comparison 11 TWSTRS‐Total score at week 16, Outcome 2 5000 U BtB versus Placebo.

Comparison 11 TWSTRS‐Total score at week 16, Outcome 2 5000 U BtB versus Placebo.

2.1 BtA responder patients

1

72

Mean Difference (IV, Fixed, 95% CI)

2.20 [‐3.77, 8.17]

3 10,000 U BtB versus 5000 U BtB Show forest plot

1

73

Mean Difference (IV, Fixed, 95% CI)

2.80 [‐2.39, 7.99]

Analysis 11.3

Comparison 11 TWSTRS‐Total score at week 16, Outcome 3 10,000 U BtB versus 5000 U BtB.

Comparison 11 TWSTRS‐Total score at week 16, Outcome 3 10,000 U BtB versus 5000 U BtB.

3.1 BtA responder patients

1

73

Mean Difference (IV, Fixed, 95% CI)

2.80 [‐2.39, 7.99]

Open in table viewer
Comparison 12. TWSTRS‐Severity score at week 4

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 10,000 U BtB versus Placebo Show forest plot

1

77

Mean Difference (IV, Fixed, 95% CI)

‐2.10 [‐4.39, 0.19]

Analysis 12.1

Comparison 12 TWSTRS‐Severity score at week 4, Outcome 1 10,000 U BtB versus Placebo.

Comparison 12 TWSTRS‐Severity score at week 4, Outcome 1 10,000 U BtB versus Placebo.

1.1 BtA resistant patients

1

77

Mean Difference (IV, Fixed, 95% CI)

‐2.10 [‐4.39, 0.19]

Open in table viewer
Comparison 13. TWSTRS‐Disability score at week 4

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 10,000 U BtB versus Placebo Show forest plot

1

77

Mean Difference (IV, Fixed, 95% CI)

‐1.60 [‐3.77, 0.57]

Analysis 13.1

Comparison 13 TWSTRS‐Disability score at week 4, Outcome 1 10,000 U BtB versus Placebo.

Comparison 13 TWSTRS‐Disability score at week 4, Outcome 1 10,000 U BtB versus Placebo.

1.1 BtA resistant patients

1

77

Mean Difference (IV, Fixed, 95% CI)

‐1.60 [‐3.77, 0.57]

Open in table viewer
Comparison 14. TWSTRS‐Pain score at week 4

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 10,000,U BtB versus Placebo Show forest plot

1

77

Mean Difference (IV, Fixed, 95% CI)

‐3.70 [‐5.64, ‐1.76]

Analysis 14.1

Comparison 14 TWSTRS‐Pain score at week 4, Outcome 1 10,000,U BtB versus Placebo.

Comparison 14 TWSTRS‐Pain score at week 4, Outcome 1 10,000,U BtB versus Placebo.

1.1 BtA resistant patients

1

77

Mean Difference (IV, Fixed, 95% CI)

‐3.70 [‐5.64, ‐1.76]

Open in table viewer
Comparison 15. Patient Global Assessment of Change at week 4

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 10,000 U BtB versus Placebo Show forest plot

2

150

Mean Difference (IV, Fixed, 95% CI)

20.84 [14.22, 27.45]

Analysis 15.1

Comparison 15 Patient Global Assessment of Change at week 4, Outcome 1 10,000 U BtB versus Placebo.

Comparison 15 Patient Global Assessment of Change at week 4, Outcome 1 10,000 U BtB versus Placebo.

1.1 BtA resistant patients

1

77

Mean Difference (IV, Fixed, 95% CI)

20.70 [11.73, 29.67]

1.2 BtA responder patients

1

73

Mean Difference (IV, Fixed, 95% CI)

21.00 [11.20, 30.80]

2 5000 U BtB versus Placebo Show forest plot

1

72

Mean Difference (IV, Fixed, 95% CI)

17.0 [6.93, 27.07]

Analysis 15.2

Comparison 15 Patient Global Assessment of Change at week 4, Outcome 2 5000 U BtB versus Placebo.

Comparison 15 Patient Global Assessment of Change at week 4, Outcome 2 5000 U BtB versus Placebo.

2.1 BtA responder patients

1

72

Mean Difference (IV, Fixed, 95% CI)

17.0 [6.93, 27.07]

3 10,000U BtB versus 5000 U BtB Show forest plot

1

73

Mean Difference (IV, Fixed, 95% CI)

4.00 [‐5.85, 13.85]

Analysis 15.3

Comparison 15 Patient Global Assessment of Change at week 4, Outcome 3 10,000U BtB versus 5000 U BtB.

Comparison 15 Patient Global Assessment of Change at week 4, Outcome 3 10,000U BtB versus 5000 U BtB.

3.1 BtA responder patients

1

73

Mean Difference (IV, Fixed, 95% CI)

4.00 [‐5.85, 13.85]

Open in table viewer
Comparison 16. Principal Investigator Global Assessment of Change at week 4

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 10,000U BtB versus Placebo Show forest plot

2

150

Mean Difference (IV, Fixed, 95% CI)

12.52 [7.97, 17.08]

Analysis 16.1

Comparison 16 Principal Investigator Global Assessment of Change at week 4, Outcome 1 10,000U BtB versus Placebo.

Comparison 16 Principal Investigator Global Assessment of Change at week 4, Outcome 1 10,000U BtB versus Placebo.

1.1 BtA resistant patients

1

77

Mean Difference (IV, Fixed, 95% CI)

12.70 [7.04, 18.36]

1.2 BtA responder patients

1

73

Mean Difference (IV, Fixed, 95% CI)

12.20 [4.50, 19.90]

2 5000 U BtB versus Placebo Show forest plot

1

72

Mean Difference (IV, Fixed, 95% CI)

13.30 [5.10, 21.50]

Analysis 16.2

Comparison 16 Principal Investigator Global Assessment of Change at week 4, Outcome 2 5000 U BtB versus Placebo.

Comparison 16 Principal Investigator Global Assessment of Change at week 4, Outcome 2 5000 U BtB versus Placebo.

2.1 BtA responder patients

1

72

Mean Difference (IV, Fixed, 95% CI)

13.30 [5.10, 21.50]

3 10,000 U BtB versus 5000 U BtB Show forest plot

1

73

Mean Difference (IV, Fixed, 95% CI)

‐1.10 [‐8.92, 6.72]

Analysis 16.3

Comparison 16 Principal Investigator Global Assessment of Change at week 4, Outcome 3 10,000 U BtB versus 5000 U BtB.

Comparison 16 Principal Investigator Global Assessment of Change at week 4, Outcome 3 10,000 U BtB versus 5000 U BtB.

3.1 BtA responder patients

1

73

Mean Difference (IV, Fixed, 95% CI)

‐1.10 [‐8.92, 6.72]

Open in table viewer
Comparison 17. Patient Analog Pain Assessment at week 4

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 10,000U BtB versus Placebo Show forest plot

2

150

Mean Difference (IV, Fixed, 95% CI)

19.63 [11.69, 27.56]

Analysis 17.1

Comparison 17 Patient Analog Pain Assessment at week 4, Outcome 1 10,000U BtB versus Placebo.

Comparison 17 Patient Analog Pain Assessment at week 4, Outcome 1 10,000U BtB versus Placebo.

1.1 BtA resistant patients

1

77

Mean Difference (IV, Fixed, 95% CI)

20.40 [9.90, 30.90]

1.2 BtA responder patients

1

73

Mean Difference (IV, Fixed, 95% CI)

18.60 [6.50, 30.70]

2 5000 U BtB versus Placebo Show forest plot

1

72

Mean Difference (IV, Fixed, 95% CI)

18.0 [5.69, 30.31]

Analysis 17.2

Comparison 17 Patient Analog Pain Assessment at week 4, Outcome 2 5000 U BtB versus Placebo.

Comparison 17 Patient Analog Pain Assessment at week 4, Outcome 2 5000 U BtB versus Placebo.

2.1 BtA responder patients

1

72

Mean Difference (IV, Fixed, 95% CI)

18.0 [5.69, 30.31]

3 10,000 U BtB versus 5000 U BtB Show forest plot

1

73

Mean Difference (IV, Fixed, 95% CI)

0.60 [‐11.33, 12.53]

Analysis 17.3

Comparison 17 Patient Analog Pain Assessment at week 4, Outcome 3 10,000 U BtB versus 5000 U BtB.

Comparison 17 Patient Analog Pain Assessment at week 4, Outcome 3 10,000 U BtB versus 5000 U BtB.

3.1 BtA responder patients

1

73

Mean Difference (IV, Fixed, 95% CI)

0.60 [‐11.33, 12.53]

Open in table viewer
Comparison 18. Any Adverse Event

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 5000 U BtB versus Placebo Show forest plot

1

72

Peto Odds Ratio (Peto, Fixed, 95% CI)

1.58 [0.42, 5.96]

Analysis 18.1

Comparison 18 Any Adverse Event, Outcome 1 5000 U BtB versus Placebo.

Comparison 18 Any Adverse Event, Outcome 1 5000 U BtB versus Placebo.

2 10,000 U BtB versus Placebo Show forest plot

2

150

Peto Odds Ratio (Peto, Fixed, 95% CI)

1.90 [0.72, 4.99]

Analysis 18.2

Comparison 18 Any Adverse Event, Outcome 2 10,000 U BtB versus Placebo.

Comparison 18 Any Adverse Event, Outcome 2 10,000 U BtB versus Placebo.

3 BtB (5000‐10,000 U) vs Placebo Show forest plot

2

186

Peto Odds Ratio (Peto, Fixed, 95% CI)

2.10 [0.84, 5.24]

Analysis 18.3

Comparison 18 Any Adverse Event, Outcome 3 BtB (5000‐10,000 U) vs Placebo.

Comparison 18 Any Adverse Event, Outcome 3 BtB (5000‐10,000 U) vs Placebo.

4 BtB (5000 U) versus BtB (10,000 U) Show forest plot

1

73

Peto Odds Ratio (Peto, Fixed, 95% CI)

1.83 [0.51, 6.52]

Analysis 18.4

Comparison 18 Any Adverse Event, Outcome 4 BtB (5000 U) versus BtB (10,000 U).

Comparison 18 Any Adverse Event, Outcome 4 BtB (5000 U) versus BtB (10,000 U).

Open in table viewer
Comparison 19. Dry Mouth Adverse Event

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 2500 U BtB versus Placebo Show forest plot

1

61

Peto Odds Ratio (Peto, Fixed, 95% CI)

0.97 [0.06, 15.84]

Analysis 19.1

Comparison 19 Dry Mouth Adverse Event, Outcome 1 2500 U BtB versus Placebo.

Comparison 19 Dry Mouth Adverse Event, Outcome 1 2500 U BtB versus Placebo.

2 5000 U BtB versus Placebo Show forest plot

2

133

Peto Odds Ratio (Peto, Fixed, 95% CI)

3.55 [0.99, 12.76]

Analysis 19.2

Comparison 19 Dry Mouth Adverse Event, Outcome 2 5000 U BtB versus Placebo.

Comparison 19 Dry Mouth Adverse Event, Outcome 2 5000 U BtB versus Placebo.

3 10,000 U BtB versus Placebo Show forest plot

3

210

Peto Odds Ratio (Peto, Fixed, 95% CI)

7.76 [3.87, 15.54]

Analysis 19.3

Comparison 19 Dry Mouth Adverse Event, Outcome 3 10,000 U BtB versus Placebo.

Comparison 19 Dry Mouth Adverse Event, Outcome 3 10,000 U BtB versus Placebo.

4 BtB (2500‐10,000 U) vs Placebo Show forest plot

3

307

Peto Odds Ratio (Peto, Fixed, 95% CI)

5.19 [2.69, 10.03]

Analysis 19.4

Comparison 19 Dry Mouth Adverse Event, Outcome 4 BtB (2500‐10,000 U) vs Placebo.

Comparison 19 Dry Mouth Adverse Event, Outcome 4 BtB (2500‐10,000 U) vs Placebo.

5 BtB (2500‐5000 U) versus BtB (10,000 U) Show forest plot

2

167

Peto Odds Ratio (Peto, Fixed, 95% CI)

0.19 [0.09, 0.40]

Analysis 19.5

Comparison 19 Dry Mouth Adverse Event, Outcome 5 BtB (2500‐5000 U) versus BtB (10,000 U).

Comparison 19 Dry Mouth Adverse Event, Outcome 5 BtB (2500‐5000 U) versus BtB (10,000 U).

Open in table viewer
Comparison 20. Dysphagia Adverse Event

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 2500 U BtB versus Placebo Show forest plot

1

61

Peto Odds Ratio (Peto, Fixed, 95% CI)

8.23 [1.34, 50.56]

Analysis 20.1

Comparison 20 Dysphagia Adverse Event, Outcome 1 2500 U BtB versus Placebo.

Comparison 20 Dysphagia Adverse Event, Outcome 1 2500 U BtB versus Placebo.

2 5000 U BtB versus Placebo Show forest plot

2

133

Peto Odds Ratio (Peto, Fixed, 95% CI)

4.77 [1.15, 19.74]

Analysis 20.2

Comparison 20 Dysphagia Adverse Event, Outcome 2 5000 U BtB versus Placebo.

Comparison 20 Dysphagia Adverse Event, Outcome 2 5000 U BtB versus Placebo.

3 10,000 U BtB versus Placebo Show forest plot

3

210

Peto Odds Ratio (Peto, Fixed, 95% CI)

6.20 [2.87, 13.37]

Analysis 20.3

Comparison 20 Dysphagia Adverse Event, Outcome 3 10,000 U BtB versus Placebo.

Comparison 20 Dysphagia Adverse Event, Outcome 3 10,000 U BtB versus Placebo.

4 BtB (2500‐10,000 U) versus Placebo Show forest plot

3

308

Peto Odds Ratio (Peto, Fixed, 95% CI)

4.37 [2.18, 8.79]

Analysis 20.4

Comparison 20 Dysphagia Adverse Event, Outcome 4 BtB (2500‐10,000 U) versus Placebo.

Comparison 20 Dysphagia Adverse Event, Outcome 4 BtB (2500‐10,000 U) versus Placebo.

5 BtB (2500‐5000 U) versus BtB (10,000 U) Show forest plot

2

165

Peto Odds Ratio (Peto, Fixed, 95% CI)

0.42 [0.18, 0.98]

Analysis 20.5

Comparison 20 Dysphagia Adverse Event, Outcome 5 BtB (2500‐5000 U) versus BtB (10,000 U).

Comparison 20 Dysphagia Adverse Event, Outcome 5 BtB (2500‐5000 U) versus BtB (10,000 U).

Open in table viewer
Comparison 21. Pain secondary to CD Adverse Event

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 2500 U BtB versus Placebo Show forest plot

1

61

Peto Odds Ratio (Peto, Fixed, 95% CI)

0.70 [0.15, 3.35]

Analysis 21.1

Comparison 21 Pain secondary to CD Adverse Event, Outcome 1 2500 U BtB versus Placebo.

Comparison 21 Pain secondary to CD Adverse Event, Outcome 1 2500 U BtB versus Placebo.

2 5000 U BtB versus Placebo Show forest plot

2

133

Peto Odds Ratio (Peto, Fixed, 95% CI)

1.09 [0.46, 2.56]

Analysis 21.2

Comparison 21 Pain secondary to CD Adverse Event, Outcome 2 5000 U BtB versus Placebo.

Comparison 21 Pain secondary to CD Adverse Event, Outcome 2 5000 U BtB versus Placebo.

3 10,000 U BtB versus Placebo Show forest plot

3

210

Peto Odds Ratio (Peto, Fixed, 95% CI)

1.22 [0.63, 2.33]

Analysis 21.3

Comparison 21 Pain secondary to CD Adverse Event, Outcome 3 10,000 U BtB versus Placebo.

Comparison 21 Pain secondary to CD Adverse Event, Outcome 3 10,000 U BtB versus Placebo.

4 BtB (2500‐10,000 U) versus Placebo Show forest plot

3

308

Peto Odds Ratio (Peto, Fixed, 95% CI)

1.10 [0.60, 1.99]

Analysis 21.4

Comparison 21 Pain secondary to CD Adverse Event, Outcome 4 BtB (2500‐10,000 U) versus Placebo.

Comparison 21 Pain secondary to CD Adverse Event, Outcome 4 BtB (2500‐10,000 U) versus Placebo.

5 BtB (2500‐5000 U) versus BtB (10,000 U) Show forest plot

2

165

Peto Odds Ratio (Peto, Fixed, 95% CI)

0.71 [0.33, 1.56]

Analysis 21.5

Comparison 21 Pain secondary to CD Adverse Event, Outcome 5 BtB (2500‐5000 U) versus BtB (10,000 U).

Comparison 21 Pain secondary to CD Adverse Event, Outcome 5 BtB (2500‐5000 U) versus BtB (10,000 U).

Open in table viewer
Comparison 22. Infection Adverse Event

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 2500 U BtB versus Placebo Show forest plot

1

61

Peto Odds Ratio (Peto, Fixed, 95% CI)

7.94 [1.06, 59.29]

Analysis 22.1

Comparison 22 Infection Adverse Event, Outcome 1 2500 U BtB versus Placebo.

Comparison 22 Infection Adverse Event, Outcome 1 2500 U BtB versus Placebo.

2 5000 U BtB versus Placebo Show forest plot

2

133

Peto Odds Ratio (Peto, Fixed, 95% CI)

1.39 [0.55, 3.49]

Analysis 22.2

Comparison 22 Infection Adverse Event, Outcome 2 5000 U BtB versus Placebo.

Comparison 22 Infection Adverse Event, Outcome 2 5000 U BtB versus Placebo.

3 10,000 U BtB versus Placebo Show forest plot

3

210

Peto Odds Ratio (Peto, Fixed, 95% CI)

0.97 [0.46, 2.07]

Analysis 22.3

Comparison 22 Infection Adverse Event, Outcome 3 10,000 U BtB versus Placebo.

Comparison 22 Infection Adverse Event, Outcome 3 10,000 U BtB versus Placebo.

4 BtB (2500‐10,000U) versus Placebo Show forest plot

3

308

Peto Odds Ratio (Peto, Fixed, 95% CI)

1.16 [0.61, 2.24]

Analysis 22.4

Comparison 22 Infection Adverse Event, Outcome 4 BtB (2500‐10,000U) versus Placebo.

Comparison 22 Infection Adverse Event, Outcome 4 BtB (2500‐10,000U) versus Placebo.

5 BtB (2500‐5000 U) versus BtB (10,000 U) Show forest plot

2

165

Peto Odds Ratio (Peto, Fixed, 95% CI)

1.59 [0.66, 3.81]

Analysis 22.5

Comparison 22 Infection Adverse Event, Outcome 5 BtB (2500‐5000 U) versus BtB (10,000 U).

Comparison 22 Infection Adverse Event, Outcome 5 BtB (2500‐5000 U) versus BtB (10,000 U).

Open in table viewer
Comparison 23. Injection site pain Adverse Event

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 2500 U BtB versus Placebo Show forest plot

1

61

Peto Odds Ratio (Peto, Fixed, 95% CI)

1.70 [0.39, 7.42]

Analysis 23.1

Comparison 23 Injection site pain Adverse Event, Outcome 1 2500 U BtB versus Placebo.

Comparison 23 Injection site pain Adverse Event, Outcome 1 2500 U BtB versus Placebo.

2 5000 U BtB versus Placebo Show forest plot

2

133

Peto Odds Ratio (Peto, Fixed, 95% CI)

1.34 [0.44, 4.07]

Analysis 23.2

Comparison 23 Injection site pain Adverse Event, Outcome 2 5000 U BtB versus Placebo.

Comparison 23 Injection site pain Adverse Event, Outcome 2 5000 U BtB versus Placebo.

3 10,000 U BtB versus Placebo Show forest plot

3

210

Peto Odds Ratio (Peto, Fixed, 95% CI)

1.84 [0.80, 4.21]

Analysis 23.3

Comparison 23 Injection site pain Adverse Event, Outcome 3 10,000 U BtB versus Placebo.

Comparison 23 Injection site pain Adverse Event, Outcome 3 10,000 U BtB versus Placebo.

4 BtB (2500‐10,000 U) versus Placebo Show forest plot

3

308

Peto Odds Ratio (Peto, Fixed, 95% CI)

1.66 [0.79, 3.48]

Analysis 23.4

Comparison 23 Injection site pain Adverse Event, Outcome 4 BtB (2500‐10,000 U) versus Placebo.

Comparison 23 Injection site pain Adverse Event, Outcome 4 BtB (2500‐10,000 U) versus Placebo.

5 BtB (2500‐5000 U) versus BtB (10,000 U) Show forest plot

2

165

Peto Odds Ratio (Peto, Fixed, 95% CI)

0.84 [0.33, 2.16]

Analysis 23.5

Comparison 23 Injection site pain Adverse Event, Outcome 5 BtB (2500‐5000 U) versus BtB (10,000 U).

Comparison 23 Injection site pain Adverse Event, Outcome 5 BtB (2500‐5000 U) versus BtB (10,000 U).

Open in table viewer
Comparison 24. Headache Adverse Event

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 2500 U BtB versus Placebo Show forest plot

1

61

Peto Odds Ratio (Peto, Fixed, 95% CI)

1.48 [0.24, 9.10]

Analysis 24.1

Comparison 24 Headache Adverse Event, Outcome 1 2500 U BtB versus Placebo.

Comparison 24 Headache Adverse Event, Outcome 1 2500 U BtB versus Placebo.

2 5000 U BtB versus Placebo Show forest plot

2

133

Peto Odds Ratio (Peto, Fixed, 95% CI)

2.34 [0.82, 6.69]

Analysis 24.2

Comparison 24 Headache Adverse Event, Outcome 2 5000 U BtB versus Placebo.

Comparison 24 Headache Adverse Event, Outcome 2 5000 U BtB versus Placebo.

3 10,000 U BtB versus Placebo Show forest plot

2

133

Peto Odds Ratio (Peto, Fixed, 95% CI)

1.84 [0.61, 5.54]

Analysis 24.3

Comparison 24 Headache Adverse Event, Outcome 3 10,000 U BtB versus Placebo.

Comparison 24 Headache Adverse Event, Outcome 3 10,000 U BtB versus Placebo.

4 BtB (2500‐10,000U) versus Placebo Show forest plot

2

231

Peto Odds Ratio (Peto, Fixed, 95% CI)

1.92 [0.81, 4.59]

Analysis 24.4

Comparison 24 Headache Adverse Event, Outcome 4 BtB (2500‐10,000U) versus Placebo.

Comparison 24 Headache Adverse Event, Outcome 4 BtB (2500‐10,000U) versus Placebo.

5 BtB (2500‐5000 U) versus BtB (10,000 U) Show forest plot

2

165

Peto Odds Ratio (Peto, Fixed, 95% CI)

1.25 [0.50, 3.09]

Analysis 24.5

Comparison 24 Headache Adverse Event, Outcome 5 BtB (2500‐5000 U) versus BtB (10,000 U).

Comparison 24 Headache Adverse Event, Outcome 5 BtB (2500‐5000 U) versus BtB (10,000 U).

Open in table viewer
Comparison 25. Flu syndrome Adverse Event

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 2500 U BtB versus Placebo Show forest plot

1

61

Peto Odds Ratio (Peto, Fixed, 95% CI)

7.40 [0.45, 121.11]

Analysis 25.1

Comparison 25 Flu syndrome Adverse Event, Outcome 1 2500 U BtB versus Placebo.

Comparison 25 Flu syndrome Adverse Event, Outcome 1 2500 U BtB versus Placebo.

2 5000 U BtB versus Placebo Show forest plot

1

61

Peto Odds Ratio (Peto, Fixed, 95% CI)

7.66 [0.77, 76.54]

Analysis 25.2

Comparison 25 Flu syndrome Adverse Event, Outcome 2 5000 U BtB versus Placebo.

Comparison 25 Flu syndrome Adverse Event, Outcome 2 5000 U BtB versus Placebo.

3 10,000 U BtB versus Placebo Show forest plot

1

60

Peto Odds Ratio (Peto, Fixed, 95% CI)

7.93 [0.79, 79.26]

Analysis 25.3

Comparison 25 Flu syndrome Adverse Event, Outcome 3 10,000 U BtB versus Placebo.

Comparison 25 Flu syndrome Adverse Event, Outcome 3 10,000 U BtB versus Placebo.

4 BtB (2500‐10,000 U) versus Placebo Show forest plot

1

122

Peto Odds Ratio (Peto, Fixed, 95% CI)

4.09 [0.78, 21.44]

Analysis 25.4

Comparison 25 Flu syndrome Adverse Event, Outcome 4 BtB (2500‐10,000 U) versus Placebo.

Comparison 25 Flu syndrome Adverse Event, Outcome 4 BtB (2500‐10,000 U) versus Placebo.

5 BtB (2500‐5000 U) versus BtB (10,000 U) Show forest plot

1

92

Peto Odds Ratio (Peto, Fixed, 95% CI)

0.96 [0.22, 4.15]

Analysis 25.5

Comparison 25 Flu syndrome Adverse Event, Outcome 5 BtB (2500‐5000 U) versus BtB (10,000 U).

Comparison 25 Flu syndrome Adverse Event, Outcome 5 BtB (2500‐5000 U) versus BtB (10,000 U).

Open in table viewer
Comparison 26. Nausea Adverse Event

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 2500 U BtB versus Placebo Show forest plot

1

61

Peto Odds Ratio (Peto, Fixed, 95% CI)

2.77 [0.37, 20.69]

Analysis 26.1

Comparison 26 Nausea Adverse Event, Outcome 1 2500 U BtB versus Placebo.

Comparison 26 Nausea Adverse Event, Outcome 1 2500 U BtB versus Placebo.

2 5000 U BtB versus Placebo Show forest plot

1

61

Peto Odds Ratio (Peto, Fixed, 95% CI)

0.97 [0.06, 15.84]

Analysis 26.2

Comparison 26 Nausea Adverse Event, Outcome 2 5000 U BtB versus Placebo.

Comparison 26 Nausea Adverse Event, Outcome 2 5000 U BtB versus Placebo.

3 10,000 U BtB versus Placebo Show forest plot

2

137

Peto Odds Ratio (Peto, Fixed, 95% CI)

2.28 [0.73, 7.12]

Analysis 26.3

Comparison 26 Nausea Adverse Event, Outcome 3 10,000 U BtB versus Placebo.

Comparison 26 Nausea Adverse Event, Outcome 3 10,000 U BtB versus Placebo.

4 BtB (2500‐10,000 U) versus Placebo Show forest plot

2

199

Peto Odds Ratio (Peto, Fixed, 95% CI)

2.03 [0.70, 5.86]

Analysis 26.4

Comparison 26 Nausea Adverse Event, Outcome 4 BtB (2500‐10,000 U) versus Placebo.

Comparison 26 Nausea Adverse Event, Outcome 4 BtB (2500‐10,000 U) versus Placebo.

5 BtB (2500‐5000 U) versus BtB (10,000 U) Show forest plot

1

92

Peto Odds Ratio (Peto, Fixed, 95% CI)

0.61 [0.12, 3.11]

Analysis 26.5

Comparison 26 Nausea Adverse Event, Outcome 5 BtB (2500‐5000 U) versus BtB (10,000 U).

Comparison 26 Nausea Adverse Event, Outcome 5 BtB (2500‐5000 U) versus BtB (10,000 U).

Open in table viewer
Comparison 27. Pain Adverse Event

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 2500 U BtB versus Placebo Show forest plot

1

61

Peto Odds Ratio (Peto, Fixed, 95% CI)

0.97 [0.13, 7.22]

Analysis 27.1

Comparison 27 Pain Adverse Event, Outcome 1 2500 U BtB versus Placebo.

Comparison 27 Pain Adverse Event, Outcome 1 2500 U BtB versus Placebo.

2 5000 U BtB versus Placebo Show forest plot

2

133

Peto Odds Ratio (Peto, Fixed, 95% CI)

0.69 [0.21, 2.23]

Analysis 27.2

Comparison 27 Pain Adverse Event, Outcome 2 5000 U BtB versus Placebo.

Comparison 27 Pain Adverse Event, Outcome 2 5000 U BtB versus Placebo.

3 10,000 U BtB versus Placebo Show forest plot

2

133

Peto Odds Ratio (Peto, Fixed, 95% CI)

1.82 [0.68, 4.82]

Analysis 27.3

Comparison 27 Pain Adverse Event, Outcome 3 10,000 U BtB versus Placebo.

Comparison 27 Pain Adverse Event, Outcome 3 10,000 U BtB versus Placebo.

4 BtB (2500‐10,000 U) versus Placebo Show forest plot

2

231

Peto Odds Ratio (Peto, Fixed, 95% CI)

1.17 [0.48, 2.87]

Analysis 27.4

Comparison 27 Pain Adverse Event, Outcome 4 BtB (2500‐10,000 U) versus Placebo.

Comparison 27 Pain Adverse Event, Outcome 4 BtB (2500‐10,000 U) versus Placebo.

5 BtB (2500‐5000 U) vs BtB (10,000 U) Show forest plot

2

165

Peto Odds Ratio (Peto, Fixed, 95% CI)

0.38 [0.14, 1.03]

Analysis 27.5

Comparison 27 Pain Adverse Event, Outcome 5 BtB (2500‐5000 U) vs BtB (10,000 U).

Comparison 27 Pain Adverse Event, Outcome 5 BtB (2500‐5000 U) vs BtB (10,000 U).

Open in table viewer
Comparison 28. Dyspepsia Adverse Event

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 5000 U BtB versus Placebo Show forest plot

1

72

Peto Odds Ratio (Peto, Fixed, 95% CI)

0.35 [0.05, 2.61]

Analysis 28.1

Comparison 28 Dyspepsia Adverse Event, Outcome 1 5000 U BtB versus Placebo.

Comparison 28 Dyspepsia Adverse Event, Outcome 1 5000 U BtB versus Placebo.

2 10,000 U BtB versus Placebo Show forest plot

1

73

Peto Odds Ratio (Peto, Fixed, 95% CI)

1.33 [0.28, 6.23]

Analysis 28.2

Comparison 28 Dyspepsia Adverse Event, Outcome 2 10,000 U BtB versus Placebo.

Comparison 28 Dyspepsia Adverse Event, Outcome 2 10,000 U BtB versus Placebo.

3 BtB (5000‐10,000 U) versus Placebo Show forest plot

1

109

Peto Odds Ratio (Peto, Fixed, 95% CI)

0.81 [0.18, 3.70]

Analysis 28.3

Comparison 28 Dyspepsia Adverse Event, Outcome 3 BtB (5000‐10,000 U) versus Placebo.

Comparison 28 Dyspepsia Adverse Event, Outcome 3 BtB (5000‐10,000 U) versus Placebo.

4 BtB (5000 U) versus BtB (10,000 U) Show forest plot

1

73

Peto Odds Ratio (Peto, Fixed, 95% CI)

0.29 [0.05, 1.75]

Analysis 28.4

Comparison 28 Dyspepsia Adverse Event, Outcome 4 BtB (5000 U) versus BtB (10,000 U).

Comparison 28 Dyspepsia Adverse Event, Outcome 4 BtB (5000 U) versus BtB (10,000 U).

Comparison 1 Improvement of at least 20% in TWSTRS‐Total score at week 4, Outcome 1 2500 U BtB versus Placebo.
Figuras y tablas -
Analysis 1.1

Comparison 1 Improvement of at least 20% in TWSTRS‐Total score at week 4, Outcome 1 2500 U BtB versus Placebo.

Comparison 1 Improvement of at least 20% in TWSTRS‐Total score at week 4, Outcome 2 5000 U BtB versus Placebo.
Figuras y tablas -
Analysis 1.2

Comparison 1 Improvement of at least 20% in TWSTRS‐Total score at week 4, Outcome 2 5000 U BtB versus Placebo.

Comparison 1 Improvement of at least 20% in TWSTRS‐Total score at week 4, Outcome 3 10,000 U BtB versus Placebo.
Figuras y tablas -
Analysis 1.3

Comparison 1 Improvement of at least 20% in TWSTRS‐Total score at week 4, Outcome 3 10,000 U BtB versus Placebo.

Comparison 1 Improvement of at least 20% in TWSTRS‐Total score at week 4, Outcome 4 BtB (2500‐10,000U) versus Placebo.
Figuras y tablas -
Analysis 1.4

Comparison 1 Improvement of at least 20% in TWSTRS‐Total score at week 4, Outcome 4 BtB (2500‐10,000U) versus Placebo.

Comparison 1 Improvement of at least 20% in TWSTRS‐Total score at week 4, Outcome 5 BtB (2500‐5000 U) versus BNT/B (10,000 U).
Figuras y tablas -
Analysis 1.5

Comparison 1 Improvement of at least 20% in TWSTRS‐Total score at week 4, Outcome 5 BtB (2500‐5000 U) versus BNT/B (10,000 U).

Comparison 2 Improvement of at least 20% in TWSTRS‐Total score at week 8, Outcome 1 2500 U BtB versus Placebo.
Figuras y tablas -
Analysis 2.1

Comparison 2 Improvement of at least 20% in TWSTRS‐Total score at week 8, Outcome 1 2500 U BtB versus Placebo.

Comparison 2 Improvement of at least 20% in TWSTRS‐Total score at week 8, Outcome 2 5000 U BtB versus Placebo.
Figuras y tablas -
Analysis 2.2

Comparison 2 Improvement of at least 20% in TWSTRS‐Total score at week 8, Outcome 2 5000 U BtB versus Placebo.

Comparison 2 Improvement of at least 20% in TWSTRS‐Total score at week 8, Outcome 3 10,000 U BtB versus Placebo.
Figuras y tablas -
Analysis 2.3

Comparison 2 Improvement of at least 20% in TWSTRS‐Total score at week 8, Outcome 3 10,000 U BtB versus Placebo.

Comparison 2 Improvement of at least 20% in TWSTRS‐Total score at week 8, Outcome 4 BtB (2500‐10,000 U) versus Placebo.
Figuras y tablas -
Analysis 2.4

Comparison 2 Improvement of at least 20% in TWSTRS‐Total score at week 8, Outcome 4 BtB (2500‐10,000 U) versus Placebo.

Comparison 2 Improvement of at least 20% in TWSTRS‐Total score at week 8, Outcome 5 BtB (2500‐5000 U) versus BtB (10,000 U).
Figuras y tablas -
Analysis 2.5

Comparison 2 Improvement of at least 20% in TWSTRS‐Total score at week 8, Outcome 5 BtB (2500‐5000 U) versus BtB (10,000 U).

Comparison 3 Improvement of at least 20% in TWSTRS‐Total score at week 12, Outcome 1 2500 U BtB versus Placebo.
Figuras y tablas -
Analysis 3.1

Comparison 3 Improvement of at least 20% in TWSTRS‐Total score at week 12, Outcome 1 2500 U BtB versus Placebo.

Comparison 3 Improvement of at least 20% in TWSTRS‐Total score at week 12, Outcome 2 5000 U BtB versus Placebo.
Figuras y tablas -
Analysis 3.2

Comparison 3 Improvement of at least 20% in TWSTRS‐Total score at week 12, Outcome 2 5000 U BtB versus Placebo.

Comparison 3 Improvement of at least 20% in TWSTRS‐Total score at week 12, Outcome 3 10,000 U BtB vs Placebo.
Figuras y tablas -
Analysis 3.3

Comparison 3 Improvement of at least 20% in TWSTRS‐Total score at week 12, Outcome 3 10,000 U BtB vs Placebo.

Comparison 3 Improvement of at least 20% in TWSTRS‐Total score at week 12, Outcome 4 BtB (2500‐10,000U) versus Placebo.
Figuras y tablas -
Analysis 3.4

Comparison 3 Improvement of at least 20% in TWSTRS‐Total score at week 12, Outcome 4 BtB (2500‐10,000U) versus Placebo.

Comparison 3 Improvement of at least 20% in TWSTRS‐Total score at week 12, Outcome 5 BtB (2500‐5000 U) versus BtB (10,000 U).
Figuras y tablas -
Analysis 3.5

Comparison 3 Improvement of at least 20% in TWSTRS‐Total score at week 12, Outcome 5 BtB (2500‐5000 U) versus BtB (10,000 U).

Comparison 4 Improvement of at least 20% in TWSTRS‐Total score at week 16, Outcome 1 2500 U BtB versus Placebo.
Figuras y tablas -
Analysis 4.1

Comparison 4 Improvement of at least 20% in TWSTRS‐Total score at week 16, Outcome 1 2500 U BtB versus Placebo.

Comparison 4 Improvement of at least 20% in TWSTRS‐Total score at week 16, Outcome 2 5000 U BtB versus Placebo.
Figuras y tablas -
Analysis 4.2

Comparison 4 Improvement of at least 20% in TWSTRS‐Total score at week 16, Outcome 2 5000 U BtB versus Placebo.

Comparison 4 Improvement of at least 20% in TWSTRS‐Total score at week 16, Outcome 3 10,000 U BtB versus Placebo.
Figuras y tablas -
Analysis 4.3

Comparison 4 Improvement of at least 20% in TWSTRS‐Total score at week 16, Outcome 3 10,000 U BtB versus Placebo.

Comparison 4 Improvement of at least 20% in TWSTRS‐Total score at week 16, Outcome 4 BtB (2500‐10,000 U) versus Placebo.
Figuras y tablas -
Analysis 4.4

Comparison 4 Improvement of at least 20% in TWSTRS‐Total score at week 16, Outcome 4 BtB (2500‐10,000 U) versus Placebo.

Comparison 4 Improvement of at least 20% in TWSTRS‐Total score at week 16, Outcome 5 BtB (2500‐5000 U) versus BtB (10,000 U).
Figuras y tablas -
Analysis 4.5

Comparison 4 Improvement of at least 20% in TWSTRS‐Total score at week 16, Outcome 5 BtB (2500‐5000 U) versus BtB (10,000 U).

Comparison 5 Improvement in TWSTRS‐Severity score at week 4, Outcome 1 2500 U BtB versus Placebo.
Figuras y tablas -
Analysis 5.1

Comparison 5 Improvement in TWSTRS‐Severity score at week 4, Outcome 1 2500 U BtB versus Placebo.

Comparison 5 Improvement in TWSTRS‐Severity score at week 4, Outcome 2 5000 U BtB versus Placebo.
Figuras y tablas -
Analysis 5.2

Comparison 5 Improvement in TWSTRS‐Severity score at week 4, Outcome 2 5000 U BtB versus Placebo.

Comparison 5 Improvement in TWSTRS‐Severity score at week 4, Outcome 3 10,000 U BtB versus Placebo.
Figuras y tablas -
Analysis 5.3

Comparison 5 Improvement in TWSTRS‐Severity score at week 4, Outcome 3 10,000 U BtB versus Placebo.

Comparison 5 Improvement in TWSTRS‐Severity score at week 4, Outcome 4 BtB (2500‐10,000 U) versus Placebo.
Figuras y tablas -
Analysis 5.4

Comparison 5 Improvement in TWSTRS‐Severity score at week 4, Outcome 4 BtB (2500‐10,000 U) versus Placebo.

Comparison 5 Improvement in TWSTRS‐Severity score at week 4, Outcome 5 BtB (2500‐5000 U) versus BtB (10,000 U).
Figuras y tablas -
Analysis 5.5

Comparison 5 Improvement in TWSTRS‐Severity score at week 4, Outcome 5 BtB (2500‐5000 U) versus BtB (10,000 U).

Comparison 6 Improvement in TWSTRS‐Disability score at week 4, Outcome 1 2500 U BtB versus Placebo.
Figuras y tablas -
Analysis 6.1

Comparison 6 Improvement in TWSTRS‐Disability score at week 4, Outcome 1 2500 U BtB versus Placebo.

Comparison 6 Improvement in TWSTRS‐Disability score at week 4, Outcome 2 5000 U BtB versuss Placebo.
Figuras y tablas -
Analysis 6.2

Comparison 6 Improvement in TWSTRS‐Disability score at week 4, Outcome 2 5000 U BtB versuss Placebo.

Comparison 6 Improvement in TWSTRS‐Disability score at week 4, Outcome 3 10,000 U BtB versus Placebo.
Figuras y tablas -
Analysis 6.3

Comparison 6 Improvement in TWSTRS‐Disability score at week 4, Outcome 3 10,000 U BtB versus Placebo.

Comparison 6 Improvement in TWSTRS‐Disability score at week 4, Outcome 4 BtB (2500‐10,000 U) versus Placebo.
Figuras y tablas -
Analysis 6.4

Comparison 6 Improvement in TWSTRS‐Disability score at week 4, Outcome 4 BtB (2500‐10,000 U) versus Placebo.

Comparison 6 Improvement in TWSTRS‐Disability score at week 4, Outcome 5 BtB (2500‐5000 U) versus BtB (10,000 U).
Figuras y tablas -
Analysis 6.5

Comparison 6 Improvement in TWSTRS‐Disability score at week 4, Outcome 5 BtB (2500‐5000 U) versus BtB (10,000 U).

Comparison 7 Improvement in TWSTRS‐Pain score at week 4, Outcome 1 2500 U BtB versus Placebo.
Figuras y tablas -
Analysis 7.1

Comparison 7 Improvement in TWSTRS‐Pain score at week 4, Outcome 1 2500 U BtB versus Placebo.

Comparison 7 Improvement in TWSTRS‐Pain score at week 4, Outcome 2 5000 U BtB versus Placebo.
Figuras y tablas -
Analysis 7.2

Comparison 7 Improvement in TWSTRS‐Pain score at week 4, Outcome 2 5000 U BtB versus Placebo.

Comparison 7 Improvement in TWSTRS‐Pain score at week 4, Outcome 3 10,000 U BtB versus Placebo.
Figuras y tablas -
Analysis 7.3

Comparison 7 Improvement in TWSTRS‐Pain score at week 4, Outcome 3 10,000 U BtB versus Placebo.

Comparison 7 Improvement in TWSTRS‐Pain score at week 4, Outcome 4 BtB (2500‐10,000U) versus Placebo.
Figuras y tablas -
Analysis 7.4

Comparison 7 Improvement in TWSTRS‐Pain score at week 4, Outcome 4 BtB (2500‐10,000U) versus Placebo.

Comparison 7 Improvement in TWSTRS‐Pain score at week 4, Outcome 5 BtB (2500‐5000 U) versus BtB (10,000 U).
Figuras y tablas -
Analysis 7.5

Comparison 7 Improvement in TWSTRS‐Pain score at week 4, Outcome 5 BtB (2500‐5000 U) versus BtB (10,000 U).

Comparison 8 TWSTRS‐Total score at week 4, Outcome 1 10,000U BtB versus Placebo.
Figuras y tablas -
Analysis 8.1

Comparison 8 TWSTRS‐Total score at week 4, Outcome 1 10,000U BtB versus Placebo.

Comparison 8 TWSTRS‐Total score at week 4, Outcome 2 5000 U BtB versus Placebo.
Figuras y tablas -
Analysis 8.2

Comparison 8 TWSTRS‐Total score at week 4, Outcome 2 5000 U BtB versus Placebo.

Comparison 8 TWSTRS‐Total score at week 4, Outcome 3 10,000U BtB versus 5000 U BoNT/B.
Figuras y tablas -
Analysis 8.3

Comparison 8 TWSTRS‐Total score at week 4, Outcome 3 10,000U BtB versus 5000 U BoNT/B.

Comparison 9 TWSTRS‐Total score at week 8, Outcome 1 10,000U BtB versus Placebo.
Figuras y tablas -
Analysis 9.1

Comparison 9 TWSTRS‐Total score at week 8, Outcome 1 10,000U BtB versus Placebo.

Comparison 9 TWSTRS‐Total score at week 8, Outcome 2 5000 U BtB versus Placebo.
Figuras y tablas -
Analysis 9.2

Comparison 9 TWSTRS‐Total score at week 8, Outcome 2 5000 U BtB versus Placebo.

Comparison 9 TWSTRS‐Total score at week 8, Outcome 3 10,000 U BtB versus 5000 U BtB.
Figuras y tablas -
Analysis 9.3

Comparison 9 TWSTRS‐Total score at week 8, Outcome 3 10,000 U BtB versus 5000 U BtB.

Comparison 10 TWSTRS‐Total score at week 12, Outcome 1 10,000 U BtB versus Placebo.
Figuras y tablas -
Analysis 10.1

Comparison 10 TWSTRS‐Total score at week 12, Outcome 1 10,000 U BtB versus Placebo.

Comparison 10 TWSTRS‐Total score at week 12, Outcome 2 5000 U BtB versus Placebo.
Figuras y tablas -
Analysis 10.2

Comparison 10 TWSTRS‐Total score at week 12, Outcome 2 5000 U BtB versus Placebo.

Comparison 10 TWSTRS‐Total score at week 12, Outcome 3 10,000U BtB versus 5000 U BtB.
Figuras y tablas -
Analysis 10.3

Comparison 10 TWSTRS‐Total score at week 12, Outcome 3 10,000U BtB versus 5000 U BtB.

Comparison 11 TWSTRS‐Total score at week 16, Outcome 1 10,000U BtB versus Placebo.
Figuras y tablas -
Analysis 11.1

Comparison 11 TWSTRS‐Total score at week 16, Outcome 1 10,000U BtB versus Placebo.

Comparison 11 TWSTRS‐Total score at week 16, Outcome 2 5000 U BtB versus Placebo.
Figuras y tablas -
Analysis 11.2

Comparison 11 TWSTRS‐Total score at week 16, Outcome 2 5000 U BtB versus Placebo.

Comparison 11 TWSTRS‐Total score at week 16, Outcome 3 10,000 U BtB versus 5000 U BtB.
Figuras y tablas -
Analysis 11.3

Comparison 11 TWSTRS‐Total score at week 16, Outcome 3 10,000 U BtB versus 5000 U BtB.

Comparison 12 TWSTRS‐Severity score at week 4, Outcome 1 10,000 U BtB versus Placebo.
Figuras y tablas -
Analysis 12.1

Comparison 12 TWSTRS‐Severity score at week 4, Outcome 1 10,000 U BtB versus Placebo.

Comparison 13 TWSTRS‐Disability score at week 4, Outcome 1 10,000 U BtB versus Placebo.
Figuras y tablas -
Analysis 13.1

Comparison 13 TWSTRS‐Disability score at week 4, Outcome 1 10,000 U BtB versus Placebo.

Comparison 14 TWSTRS‐Pain score at week 4, Outcome 1 10,000,U BtB versus Placebo.
Figuras y tablas -
Analysis 14.1

Comparison 14 TWSTRS‐Pain score at week 4, Outcome 1 10,000,U BtB versus Placebo.

Comparison 15 Patient Global Assessment of Change at week 4, Outcome 1 10,000 U BtB versus Placebo.
Figuras y tablas -
Analysis 15.1

Comparison 15 Patient Global Assessment of Change at week 4, Outcome 1 10,000 U BtB versus Placebo.

Comparison 15 Patient Global Assessment of Change at week 4, Outcome 2 5000 U BtB versus Placebo.
Figuras y tablas -
Analysis 15.2

Comparison 15 Patient Global Assessment of Change at week 4, Outcome 2 5000 U BtB versus Placebo.

Comparison 15 Patient Global Assessment of Change at week 4, Outcome 3 10,000U BtB versus 5000 U BtB.
Figuras y tablas -
Analysis 15.3

Comparison 15 Patient Global Assessment of Change at week 4, Outcome 3 10,000U BtB versus 5000 U BtB.

Comparison 16 Principal Investigator Global Assessment of Change at week 4, Outcome 1 10,000U BtB versus Placebo.
Figuras y tablas -
Analysis 16.1

Comparison 16 Principal Investigator Global Assessment of Change at week 4, Outcome 1 10,000U BtB versus Placebo.

Comparison 16 Principal Investigator Global Assessment of Change at week 4, Outcome 2 5000 U BtB versus Placebo.
Figuras y tablas -
Analysis 16.2

Comparison 16 Principal Investigator Global Assessment of Change at week 4, Outcome 2 5000 U BtB versus Placebo.

Comparison 16 Principal Investigator Global Assessment of Change at week 4, Outcome 3 10,000 U BtB versus 5000 U BtB.
Figuras y tablas -
Analysis 16.3

Comparison 16 Principal Investigator Global Assessment of Change at week 4, Outcome 3 10,000 U BtB versus 5000 U BtB.

Comparison 17 Patient Analog Pain Assessment at week 4, Outcome 1 10,000U BtB versus Placebo.
Figuras y tablas -
Analysis 17.1

Comparison 17 Patient Analog Pain Assessment at week 4, Outcome 1 10,000U BtB versus Placebo.

Comparison 17 Patient Analog Pain Assessment at week 4, Outcome 2 5000 U BtB versus Placebo.
Figuras y tablas -
Analysis 17.2

Comparison 17 Patient Analog Pain Assessment at week 4, Outcome 2 5000 U BtB versus Placebo.

Comparison 17 Patient Analog Pain Assessment at week 4, Outcome 3 10,000 U BtB versus 5000 U BtB.
Figuras y tablas -
Analysis 17.3

Comparison 17 Patient Analog Pain Assessment at week 4, Outcome 3 10,000 U BtB versus 5000 U BtB.

Comparison 18 Any Adverse Event, Outcome 1 5000 U BtB versus Placebo.
Figuras y tablas -
Analysis 18.1

Comparison 18 Any Adverse Event, Outcome 1 5000 U BtB versus Placebo.

Comparison 18 Any Adverse Event, Outcome 2 10,000 U BtB versus Placebo.
Figuras y tablas -
Analysis 18.2

Comparison 18 Any Adverse Event, Outcome 2 10,000 U BtB versus Placebo.

Comparison 18 Any Adverse Event, Outcome 3 BtB (5000‐10,000 U) vs Placebo.
Figuras y tablas -
Analysis 18.3

Comparison 18 Any Adverse Event, Outcome 3 BtB (5000‐10,000 U) vs Placebo.

Comparison 18 Any Adverse Event, Outcome 4 BtB (5000 U) versus BtB (10,000 U).
Figuras y tablas -
Analysis 18.4

Comparison 18 Any Adverse Event, Outcome 4 BtB (5000 U) versus BtB (10,000 U).

Comparison 19 Dry Mouth Adverse Event, Outcome 1 2500 U BtB versus Placebo.
Figuras y tablas -
Analysis 19.1

Comparison 19 Dry Mouth Adverse Event, Outcome 1 2500 U BtB versus Placebo.

Comparison 19 Dry Mouth Adverse Event, Outcome 2 5000 U BtB versus Placebo.
Figuras y tablas -
Analysis 19.2

Comparison 19 Dry Mouth Adverse Event, Outcome 2 5000 U BtB versus Placebo.

Comparison 19 Dry Mouth Adverse Event, Outcome 3 10,000 U BtB versus Placebo.
Figuras y tablas -
Analysis 19.3

Comparison 19 Dry Mouth Adverse Event, Outcome 3 10,000 U BtB versus Placebo.

Comparison 19 Dry Mouth Adverse Event, Outcome 4 BtB (2500‐10,000 U) vs Placebo.
Figuras y tablas -
Analysis 19.4

Comparison 19 Dry Mouth Adverse Event, Outcome 4 BtB (2500‐10,000 U) vs Placebo.

Comparison 19 Dry Mouth Adverse Event, Outcome 5 BtB (2500‐5000 U) versus BtB (10,000 U).
Figuras y tablas -
Analysis 19.5

Comparison 19 Dry Mouth Adverse Event, Outcome 5 BtB (2500‐5000 U) versus BtB (10,000 U).

Comparison 20 Dysphagia Adverse Event, Outcome 1 2500 U BtB versus Placebo.
Figuras y tablas -
Analysis 20.1

Comparison 20 Dysphagia Adverse Event, Outcome 1 2500 U BtB versus Placebo.

Comparison 20 Dysphagia Adverse Event, Outcome 2 5000 U BtB versus Placebo.
Figuras y tablas -
Analysis 20.2

Comparison 20 Dysphagia Adverse Event, Outcome 2 5000 U BtB versus Placebo.

Comparison 20 Dysphagia Adverse Event, Outcome 3 10,000 U BtB versus Placebo.
Figuras y tablas -
Analysis 20.3

Comparison 20 Dysphagia Adverse Event, Outcome 3 10,000 U BtB versus Placebo.

Comparison 20 Dysphagia Adverse Event, Outcome 4 BtB (2500‐10,000 U) versus Placebo.
Figuras y tablas -
Analysis 20.4

Comparison 20 Dysphagia Adverse Event, Outcome 4 BtB (2500‐10,000 U) versus Placebo.

Comparison 20 Dysphagia Adverse Event, Outcome 5 BtB (2500‐5000 U) versus BtB (10,000 U).
Figuras y tablas -
Analysis 20.5

Comparison 20 Dysphagia Adverse Event, Outcome 5 BtB (2500‐5000 U) versus BtB (10,000 U).

Comparison 21 Pain secondary to CD Adverse Event, Outcome 1 2500 U BtB versus Placebo.
Figuras y tablas -
Analysis 21.1

Comparison 21 Pain secondary to CD Adverse Event, Outcome 1 2500 U BtB versus Placebo.

Comparison 21 Pain secondary to CD Adverse Event, Outcome 2 5000 U BtB versus Placebo.
Figuras y tablas -
Analysis 21.2

Comparison 21 Pain secondary to CD Adverse Event, Outcome 2 5000 U BtB versus Placebo.

Comparison 21 Pain secondary to CD Adverse Event, Outcome 3 10,000 U BtB versus Placebo.
Figuras y tablas -
Analysis 21.3

Comparison 21 Pain secondary to CD Adverse Event, Outcome 3 10,000 U BtB versus Placebo.

Comparison 21 Pain secondary to CD Adverse Event, Outcome 4 BtB (2500‐10,000 U) versus Placebo.
Figuras y tablas -
Analysis 21.4

Comparison 21 Pain secondary to CD Adverse Event, Outcome 4 BtB (2500‐10,000 U) versus Placebo.

Comparison 21 Pain secondary to CD Adverse Event, Outcome 5 BtB (2500‐5000 U) versus BtB (10,000 U).
Figuras y tablas -
Analysis 21.5

Comparison 21 Pain secondary to CD Adverse Event, Outcome 5 BtB (2500‐5000 U) versus BtB (10,000 U).

Comparison 22 Infection Adverse Event, Outcome 1 2500 U BtB versus Placebo.
Figuras y tablas -
Analysis 22.1

Comparison 22 Infection Adverse Event, Outcome 1 2500 U BtB versus Placebo.

Comparison 22 Infection Adverse Event, Outcome 2 5000 U BtB versus Placebo.
Figuras y tablas -
Analysis 22.2

Comparison 22 Infection Adverse Event, Outcome 2 5000 U BtB versus Placebo.

Comparison 22 Infection Adverse Event, Outcome 3 10,000 U BtB versus Placebo.
Figuras y tablas -
Analysis 22.3

Comparison 22 Infection Adverse Event, Outcome 3 10,000 U BtB versus Placebo.

Comparison 22 Infection Adverse Event, Outcome 4 BtB (2500‐10,000U) versus Placebo.
Figuras y tablas -
Analysis 22.4

Comparison 22 Infection Adverse Event, Outcome 4 BtB (2500‐10,000U) versus Placebo.

Comparison 22 Infection Adverse Event, Outcome 5 BtB (2500‐5000 U) versus BtB (10,000 U).
Figuras y tablas -
Analysis 22.5

Comparison 22 Infection Adverse Event, Outcome 5 BtB (2500‐5000 U) versus BtB (10,000 U).

Comparison 23 Injection site pain Adverse Event, Outcome 1 2500 U BtB versus Placebo.
Figuras y tablas -
Analysis 23.1

Comparison 23 Injection site pain Adverse Event, Outcome 1 2500 U BtB versus Placebo.

Comparison 23 Injection site pain Adverse Event, Outcome 2 5000 U BtB versus Placebo.
Figuras y tablas -
Analysis 23.2

Comparison 23 Injection site pain Adverse Event, Outcome 2 5000 U BtB versus Placebo.

Comparison 23 Injection site pain Adverse Event, Outcome 3 10,000 U BtB versus Placebo.
Figuras y tablas -
Analysis 23.3

Comparison 23 Injection site pain Adverse Event, Outcome 3 10,000 U BtB versus Placebo.

Comparison 23 Injection site pain Adverse Event, Outcome 4 BtB (2500‐10,000 U) versus Placebo.
Figuras y tablas -
Analysis 23.4

Comparison 23 Injection site pain Adverse Event, Outcome 4 BtB (2500‐10,000 U) versus Placebo.

Comparison 23 Injection site pain Adverse Event, Outcome 5 BtB (2500‐5000 U) versus BtB (10,000 U).
Figuras y tablas -
Analysis 23.5

Comparison 23 Injection site pain Adverse Event, Outcome 5 BtB (2500‐5000 U) versus BtB (10,000 U).

Comparison 24 Headache Adverse Event, Outcome 1 2500 U BtB versus Placebo.
Figuras y tablas -
Analysis 24.1

Comparison 24 Headache Adverse Event, Outcome 1 2500 U BtB versus Placebo.

Comparison 24 Headache Adverse Event, Outcome 2 5000 U BtB versus Placebo.
Figuras y tablas -
Analysis 24.2

Comparison 24 Headache Adverse Event, Outcome 2 5000 U BtB versus Placebo.

Comparison 24 Headache Adverse Event, Outcome 3 10,000 U BtB versus Placebo.
Figuras y tablas -
Analysis 24.3

Comparison 24 Headache Adverse Event, Outcome 3 10,000 U BtB versus Placebo.

Comparison 24 Headache Adverse Event, Outcome 4 BtB (2500‐10,000U) versus Placebo.
Figuras y tablas -
Analysis 24.4

Comparison 24 Headache Adverse Event, Outcome 4 BtB (2500‐10,000U) versus Placebo.

Comparison 24 Headache Adverse Event, Outcome 5 BtB (2500‐5000 U) versus BtB (10,000 U).
Figuras y tablas -
Analysis 24.5

Comparison 24 Headache Adverse Event, Outcome 5 BtB (2500‐5000 U) versus BtB (10,000 U).

Comparison 25 Flu syndrome Adverse Event, Outcome 1 2500 U BtB versus Placebo.
Figuras y tablas -
Analysis 25.1

Comparison 25 Flu syndrome Adverse Event, Outcome 1 2500 U BtB versus Placebo.

Comparison 25 Flu syndrome Adverse Event, Outcome 2 5000 U BtB versus Placebo.
Figuras y tablas -
Analysis 25.2

Comparison 25 Flu syndrome Adverse Event, Outcome 2 5000 U BtB versus Placebo.

Comparison 25 Flu syndrome Adverse Event, Outcome 3 10,000 U BtB versus Placebo.
Figuras y tablas -
Analysis 25.3

Comparison 25 Flu syndrome Adverse Event, Outcome 3 10,000 U BtB versus Placebo.

Comparison 25 Flu syndrome Adverse Event, Outcome 4 BtB (2500‐10,000 U) versus Placebo.
Figuras y tablas -
Analysis 25.4

Comparison 25 Flu syndrome Adverse Event, Outcome 4 BtB (2500‐10,000 U) versus Placebo.

Comparison 25 Flu syndrome Adverse Event, Outcome 5 BtB (2500‐5000 U) versus BtB (10,000 U).
Figuras y tablas -
Analysis 25.5

Comparison 25 Flu syndrome Adverse Event, Outcome 5 BtB (2500‐5000 U) versus BtB (10,000 U).

Comparison 26 Nausea Adverse Event, Outcome 1 2500 U BtB versus Placebo.
Figuras y tablas -
Analysis 26.1

Comparison 26 Nausea Adverse Event, Outcome 1 2500 U BtB versus Placebo.

Comparison 26 Nausea Adverse Event, Outcome 2 5000 U BtB versus Placebo.
Figuras y tablas -
Analysis 26.2

Comparison 26 Nausea Adverse Event, Outcome 2 5000 U BtB versus Placebo.

Comparison 26 Nausea Adverse Event, Outcome 3 10,000 U BtB versus Placebo.
Figuras y tablas -
Analysis 26.3

Comparison 26 Nausea Adverse Event, Outcome 3 10,000 U BtB versus Placebo.

Comparison 26 Nausea Adverse Event, Outcome 4 BtB (2500‐10,000 U) versus Placebo.
Figuras y tablas -
Analysis 26.4

Comparison 26 Nausea Adverse Event, Outcome 4 BtB (2500‐10,000 U) versus Placebo.

Comparison 26 Nausea Adverse Event, Outcome 5 BtB (2500‐5000 U) versus BtB (10,000 U).
Figuras y tablas -
Analysis 26.5

Comparison 26 Nausea Adverse Event, Outcome 5 BtB (2500‐5000 U) versus BtB (10,000 U).

Comparison 27 Pain Adverse Event, Outcome 1 2500 U BtB versus Placebo.
Figuras y tablas -
Analysis 27.1

Comparison 27 Pain Adverse Event, Outcome 1 2500 U BtB versus Placebo.

Comparison 27 Pain Adverse Event, Outcome 2 5000 U BtB versus Placebo.
Figuras y tablas -
Analysis 27.2

Comparison 27 Pain Adverse Event, Outcome 2 5000 U BtB versus Placebo.

Comparison 27 Pain Adverse Event, Outcome 3 10,000 U BtB versus Placebo.
Figuras y tablas -
Analysis 27.3

Comparison 27 Pain Adverse Event, Outcome 3 10,000 U BtB versus Placebo.

Comparison 27 Pain Adverse Event, Outcome 4 BtB (2500‐10,000 U) versus Placebo.
Figuras y tablas -
Analysis 27.4

Comparison 27 Pain Adverse Event, Outcome 4 BtB (2500‐10,000 U) versus Placebo.

Comparison 27 Pain Adverse Event, Outcome 5 BtB (2500‐5000 U) vs BtB (10,000 U).
Figuras y tablas -
Analysis 27.5

Comparison 27 Pain Adverse Event, Outcome 5 BtB (2500‐5000 U) vs BtB (10,000 U).

Comparison 28 Dyspepsia Adverse Event, Outcome 1 5000 U BtB versus Placebo.
Figuras y tablas -
Analysis 28.1

Comparison 28 Dyspepsia Adverse Event, Outcome 1 5000 U BtB versus Placebo.

Comparison 28 Dyspepsia Adverse Event, Outcome 2 10,000 U BtB versus Placebo.
Figuras y tablas -
Analysis 28.2

Comparison 28 Dyspepsia Adverse Event, Outcome 2 10,000 U BtB versus Placebo.

Comparison 28 Dyspepsia Adverse Event, Outcome 3 BtB (5000‐10,000 U) versus Placebo.
Figuras y tablas -
Analysis 28.3

Comparison 28 Dyspepsia Adverse Event, Outcome 3 BtB (5000‐10,000 U) versus Placebo.

Comparison 28 Dyspepsia Adverse Event, Outcome 4 BtB (5000 U) versus BtB (10,000 U).
Figuras y tablas -
Analysis 28.4

Comparison 28 Dyspepsia Adverse Event, Outcome 4 BtB (5000 U) versus BtB (10,000 U).

Comparison 1. Improvement of at least 20% in TWSTRS‐Total score at week 4

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 2500 U BtB versus Placebo Show forest plot

1

61

Peto Odds Ratio (Peto, Fixed, 95% CI)

3.45 [1.26, 9.41]

1.1 BtA responder patients

1

44

Peto Odds Ratio (Peto, Fixed, 95% CI)

3.57 [1.10, 11.56]

1.2 BtA resistant or non‐responder patients

1

17

Peto Odds Ratio (Peto, Fixed, 95% CI)

3.14 [0.45, 21.72]

2 5000 U BtB versus Placebo Show forest plot

1

61

Peto Odds Ratio (Peto, Fixed, 95% CI)

4.03 [1.48, 10.97]

2.1 BtA responder patients

1

46

Peto Odds Ratio (Peto, Fixed, 95% CI)

2.98 [0.94, 9.48]

2.2 BtA resistant or non‐responder patients

1

15

Peto Odds Ratio (Peto, Fixed, 95% CI)

9.89 [1.34, 73.12]

3 10,000 U BtB versus Placebo Show forest plot

1

60

Peto Odds Ratio (Peto, Fixed, 95% CI)

6.93 [2.55, 18.83]

3.1 BtA responder patients

1

40

Peto Odds Ratio (Peto, Fixed, 95% CI)

5.81 [1.71, 19.79]

3.2 BtA resistant or non‐responder patients

1

20

Peto Odds Ratio (Peto, Fixed, 95% CI)

9.85 [1.75, 55.34]

4 BtB (2500‐10,000U) versus Placebo Show forest plot

1

122

Peto Odds Ratio (Peto, Fixed, 95% CI)

4.69 [2.06, 10.69]

4.1 BtA responder patients

1

88

Peto Odds Ratio (Peto, Fixed, 95% CI)

3.90 [1.46, 10.37]

4.2 BtA resistant or non‐responder patients

1

34

Peto Odds Ratio (Peto, Fixed, 95% CI)

7.35 [1.60, 33.78]

5 BtB (2500‐5000 U) versus BNT/B (10,000 U) Show forest plot

1

92

Peto Odds Ratio (Peto, Fixed, 95% CI)

0.50 [0.20, 1.25]

5.1 BtA responder patients

1

67

Peto Odds Ratio (Peto, Fixed, 95% CI)

0.52 [0.18, 1.56]

5.2 BtA resistant or non‐responder patients

1

25

Peto Odds Ratio (Peto, Fixed, 95% CI)

0.43 [0.08, 2.43]

Figuras y tablas -
Comparison 1. Improvement of at least 20% in TWSTRS‐Total score at week 4
Comparison 2. Improvement of at least 20% in TWSTRS‐Total score at week 8

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 2500 U BtB versus Placebo Show forest plot

1

61

Peto Odds Ratio (Peto, Fixed, 95% CI)

2.60 [0.84, 8.07]

2 5000 U BtB versus Placebo Show forest plot

1

61

Peto Odds Ratio (Peto, Fixed, 95% CI)

3.30 [1.11, 9.84]

3 10,000 U BtB versus Placebo Show forest plot

1

60

Peto Odds Ratio (Peto, Fixed, 95% CI)

4.88 [1.70, 13.97]

4 BtB (2500‐10,000 U) versus Placebo Show forest plot

1

122

Peto Odds Ratio (Peto, Fixed, 95% CI)

3.13 [1.34, 7.34]

5 BtB (2500‐5000 U) versus BtB (10,000 U) Show forest plot

1

92

Peto Odds Ratio (Peto, Fixed, 95% CI)

0.56 [0.23, 1.33]

Figuras y tablas -
Comparison 2. Improvement of at least 20% in TWSTRS‐Total score at week 8
Comparison 3. Improvement of at least 20% in TWSTRS‐Total score at week 12

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 2500 U BtB versus Placebo Show forest plot

1

61

Peto Odds Ratio (Peto, Fixed, 95% CI)

1.70 [0.39, 7.42]

2 5000 U BtB versus Placebo Show forest plot

1

61

Peto Odds Ratio (Peto, Fixed, 95% CI)

3.27 [0.93, 11.44]

3 10,000 U BtB vs Placebo Show forest plot

1

60

Peto Odds Ratio (Peto, Fixed, 95% CI)

3.42 [0.97, 11.99]

4 BtB (2500‐10,000U) versus Placebo Show forest plot

1

122

Peto Odds Ratio (Peto, Fixed, 95% CI)

2.43 [0.89, 6.61]

5 BtB (2500‐5000 U) versus BtB (10,000 U) Show forest plot

1

92

Peto Odds Ratio (Peto, Fixed, 95% CI)

0.68 [0.25, 1.84]

Figuras y tablas -
Comparison 3. Improvement of at least 20% in TWSTRS‐Total score at week 12
Comparison 4. Improvement of at least 20% in TWSTRS‐Total score at week 16

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 2500 U BtB versus Placebo Show forest plot

1

61

Peto Odds Ratio (Peto, Fixed, 95% CI)

0.48 [0.05, 4.85]

2 5000 U BtB versus Placebo Show forest plot

1

61

Peto Odds Ratio (Peto, Fixed, 95% CI)

2.99 [0.68, 13.07]

3 10,000 U BtB versus Placebo Show forest plot

1

60

Peto Odds Ratio (Peto, Fixed, 95% CI)

2.60 [0.54, 12.40]

4 BtB (2500‐10,000 U) versus Placebo Show forest plot

1

122

Peto Odds Ratio (Peto, Fixed, 95% CI)

1.86 [0.51, 6.75]

5 BtB (2500‐5000 U) versus BtB (10,000 U) Show forest plot

1

92

Peto Odds Ratio (Peto, Fixed, 95% CI)

0.63 [0.17, 2.27]

Figuras y tablas -
Comparison 4. Improvement of at least 20% in TWSTRS‐Total score at week 16
Comparison 5. Improvement in TWSTRS‐Severity score at week 4

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 2500 U BtB versus Placebo Show forest plot

1

61

Peto Odds Ratio (Peto, Fixed, 95% CI)

2.59 [0.91, 7.38]

2 5000 U BtB versus Placebo Show forest plot

1

61

Peto Odds Ratio (Peto, Fixed, 95% CI)

4.60 [1.68, 12.60]

3 10,000 U BtB versus Placebo Show forest plot

1

60

Peto Odds Ratio (Peto, Fixed, 95% CI)

3.09 [1.09, 8.76]

4 BtB (2500‐10,000 U) versus Placebo Show forest plot

1

122

Peto Odds Ratio (Peto, Fixed, 95% CI)

3.18 [1.39, 7.24]

5 BtB (2500‐5000 U) versus BtB (10,000 U) Show forest plot

1

92

Peto Odds Ratio (Peto, Fixed, 95% CI)

1.14 [0.48, 2.71]

Figuras y tablas -
Comparison 5. Improvement in TWSTRS‐Severity score at week 4
Comparison 6. Improvement in TWSTRS‐Disability score at week 4

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 2500 U BtB versus Placebo Show forest plot

1

61

Peto Odds Ratio (Peto, Fixed, 95% CI)

4.30 [1.54, 12.01]

2 5000 U BtB versuss Placebo Show forest plot

1

61

Peto Odds Ratio (Peto, Fixed, 95% CI)

3.07 [1.06, 8.88]

3 10,000 U BtB versus Placebo Show forest plot

1

60

Peto Odds Ratio (Peto, Fixed, 95% CI)

6.48 [2.35, 17.84]

4 BtB (2500‐10,000 U) versus Placebo Show forest plot

1

122

Peto Odds Ratio (Peto, Fixed, 95% CI)

4.10 [1.80, 9.34]

5 BtB (2500‐5000 U) versus BtB (10,000 U) Show forest plot

1

92

Peto Odds Ratio (Peto, Fixed, 95% CI)

0.51 [0.21, 1.23]

Figuras y tablas -
Comparison 6. Improvement in TWSTRS‐Disability score at week 4
Comparison 7. Improvement in TWSTRS‐Pain score at week 4

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 2500 U BtB versus Placebo Show forest plot

1

61

Peto Odds Ratio (Peto, Fixed, 95% CI)

2.31 [0.85, 6.26]

2 5000 U BtB versus Placebo Show forest plot

1

61

Peto Odds Ratio (Peto, Fixed, 95% CI)

2.63 [0.97, 7.13]

3 10,000 U BtB versus Placebo Show forest plot

1

60

Peto Odds Ratio (Peto, Fixed, 95% CI)

6.07 [2.16, 17.03]

4 BtB (2500‐10,000U) versus Placebo Show forest plot

1

122

Peto Odds Ratio (Peto, Fixed, 95% CI)

3.48 [1.49, 8.13]

5 BtB (2500‐5000 U) versus BtB (10,000 U) Show forest plot

1

92

Peto Odds Ratio (Peto, Fixed, 95% CI)

0.39 [0.15, 0.99]

Figuras y tablas -
Comparison 7. Improvement in TWSTRS‐Pain score at week 4
Comparison 8. TWSTRS‐Total score at week 4

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 10,000U BtB versus Placebo Show forest plot

2

150

Mean Difference (IV, Fixed, 95% CI)

‐5.92 [‐9.61, ‐2.23]

1.1 BtA resistant patients

1

77

Mean Difference (IV, Fixed, 95% CI)

‐7.40 [‐12.38, ‐2.42]

1.2 BtA responder patients

1

73

Mean Difference (IV, Fixed, 95% CI)

‐4.10 [‐9.61, 1.41]

2 5000 U BtB versus Placebo Show forest plot

1

72

Mean Difference (IV, Fixed, 95% CI)

‐2.20 [‐8.44, 4.04]

2.1 BtA responder patients

1

72

Mean Difference (IV, Fixed, 95% CI)

‐2.20 [‐8.44, 4.04]

3 10,000U BtB versus 5000 U BoNT/B Show forest plot

1

73

Mean Difference (IV, Fixed, 95% CI)

‐1.90 [‐8.23, 4.43]

3.1 BtA responder patients

1

73

Mean Difference (IV, Fixed, 95% CI)

‐1.90 [‐8.23, 4.43]

Figuras y tablas -
Comparison 8. TWSTRS‐Total score at week 4
Comparison 9. TWSTRS‐Total score at week 8

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 10,000U BtB versus Placebo Show forest plot

2

150

Mean Difference (IV, Fixed, 95% CI)

‐4.46 [‐8.19, ‐0.73]

1.1 BtA resistant patients

1

77

Mean Difference (IV, Fixed, 95% CI)

‐5.5 [‐10.26, ‐0.74]

1.2 BtA responder patients

1

73

Mean Difference (IV, Fixed, 95% CI)

‐2.80 [‐8.81, 3.21]

2 5000 U BtB versus Placebo Show forest plot

1

72

Mean Difference (IV, Fixed, 95% CI)

‐1.90 [‐8.30, 4.50]

2.1 BtA responder patients

1

72

Mean Difference (IV, Fixed, 95% CI)

‐1.90 [‐8.30, 4.50]

3 10,000 U BtB versus 5000 U BtB Show forest plot

1

73

Mean Difference (IV, Fixed, 95% CI)

‐0.90 [‐7.13, 5.33]

3.1 BtA responder patients

1

73

Mean Difference (IV, Fixed, 95% CI)

‐0.90 [‐7.13, 5.33]

Figuras y tablas -
Comparison 9. TWSTRS‐Total score at week 8
Comparison 10. TWSTRS‐Total score at week 12

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 10,000 U BtB versus Placebo Show forest plot

2

150

Mean Difference (IV, Fixed, 95% CI)

‐1.72 [‐5.57, 2.13]

1.1 BtA resistant patients

1

77

Mean Difference (IV, Fixed, 95% CI)

‐3.70 [‐8.95, 1.55]

1.2 BtA responder patients

1

73

Mean Difference (IV, Fixed, 95% CI)

0.60 [‐5.07, 6.27]

2 5000 U BtB versus Placebo Show forest plot

1

72

Mean Difference (IV, Fixed, 95% CI)

0.70 [‐5.10, 6.50]

2.1 BtA responder patients

1

72

Mean Difference (IV, Fixed, 95% CI)

0.70 [‐5.10, 6.50]

3 10,000U BtB versus 5000 U BtB Show forest plot

1

73

Mean Difference (IV, Fixed, 95% CI)

‐0.10 [‐5.75, 5.55]

3.1 BtA responder patients

1

73

Mean Difference (IV, Fixed, 95% CI)

‐0.10 [‐5.75, 5.55]

Figuras y tablas -
Comparison 10. TWSTRS‐Total score at week 12
Comparison 11. TWSTRS‐Total score at week 16

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 10,000U BtB versus Placebo Show forest plot

2

150

Mean Difference (IV, Fixed, 95% CI)

1.54 [‐2.21, 5.30]

1.1 BtA resistant patients

1

77

Mean Difference (IV, Fixed, 95% CI)

‐1.30 [‐6.40, 3.80]

1.2 BtA responder patients

1

73

Mean Difference (IV, Fixed, 95% CI)

4.90 [‐0.65, 10.45]

2 5000 U BtB versus Placebo Show forest plot

1

72

Mean Difference (IV, Fixed, 95% CI)

2.20 [‐3.77, 8.17]

2.1 BtA responder patients

1

72

Mean Difference (IV, Fixed, 95% CI)

2.20 [‐3.77, 8.17]

3 10,000 U BtB versus 5000 U BtB Show forest plot

1

73

Mean Difference (IV, Fixed, 95% CI)

2.80 [‐2.39, 7.99]

3.1 BtA responder patients

1

73

Mean Difference (IV, Fixed, 95% CI)

2.80 [‐2.39, 7.99]

Figuras y tablas -
Comparison 11. TWSTRS‐Total score at week 16
Comparison 12. TWSTRS‐Severity score at week 4

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 10,000 U BtB versus Placebo Show forest plot

1

77

Mean Difference (IV, Fixed, 95% CI)

‐2.10 [‐4.39, 0.19]

1.1 BtA resistant patients

1

77

Mean Difference (IV, Fixed, 95% CI)

‐2.10 [‐4.39, 0.19]

Figuras y tablas -
Comparison 12. TWSTRS‐Severity score at week 4
Comparison 13. TWSTRS‐Disability score at week 4

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 10,000 U BtB versus Placebo Show forest plot

1

77

Mean Difference (IV, Fixed, 95% CI)

‐1.60 [‐3.77, 0.57]

1.1 BtA resistant patients

1

77

Mean Difference (IV, Fixed, 95% CI)

‐1.60 [‐3.77, 0.57]

Figuras y tablas -
Comparison 13. TWSTRS‐Disability score at week 4
Comparison 14. TWSTRS‐Pain score at week 4

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 10,000,U BtB versus Placebo Show forest plot

1

77

Mean Difference (IV, Fixed, 95% CI)

‐3.70 [‐5.64, ‐1.76]

1.1 BtA resistant patients

1

77

Mean Difference (IV, Fixed, 95% CI)

‐3.70 [‐5.64, ‐1.76]

Figuras y tablas -
Comparison 14. TWSTRS‐Pain score at week 4
Comparison 15. Patient Global Assessment of Change at week 4

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 10,000 U BtB versus Placebo Show forest plot

2

150

Mean Difference (IV, Fixed, 95% CI)

20.84 [14.22, 27.45]

1.1 BtA resistant patients

1

77

Mean Difference (IV, Fixed, 95% CI)

20.70 [11.73, 29.67]

1.2 BtA responder patients

1

73

Mean Difference (IV, Fixed, 95% CI)

21.00 [11.20, 30.80]

2 5000 U BtB versus Placebo Show forest plot

1

72

Mean Difference (IV, Fixed, 95% CI)

17.0 [6.93, 27.07]

2.1 BtA responder patients

1

72

Mean Difference (IV, Fixed, 95% CI)

17.0 [6.93, 27.07]

3 10,000U BtB versus 5000 U BtB Show forest plot

1

73

Mean Difference (IV, Fixed, 95% CI)

4.00 [‐5.85, 13.85]

3.1 BtA responder patients

1

73

Mean Difference (IV, Fixed, 95% CI)

4.00 [‐5.85, 13.85]

Figuras y tablas -
Comparison 15. Patient Global Assessment of Change at week 4
Comparison 16. Principal Investigator Global Assessment of Change at week 4

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 10,000U BtB versus Placebo Show forest plot

2

150

Mean Difference (IV, Fixed, 95% CI)

12.52 [7.97, 17.08]

1.1 BtA resistant patients

1

77

Mean Difference (IV, Fixed, 95% CI)

12.70 [7.04, 18.36]

1.2 BtA responder patients

1

73

Mean Difference (IV, Fixed, 95% CI)

12.20 [4.50, 19.90]

2 5000 U BtB versus Placebo Show forest plot

1

72

Mean Difference (IV, Fixed, 95% CI)

13.30 [5.10, 21.50]

2.1 BtA responder patients

1

72

Mean Difference (IV, Fixed, 95% CI)

13.30 [5.10, 21.50]

3 10,000 U BtB versus 5000 U BtB Show forest plot

1

73

Mean Difference (IV, Fixed, 95% CI)

‐1.10 [‐8.92, 6.72]

3.1 BtA responder patients

1

73

Mean Difference (IV, Fixed, 95% CI)

‐1.10 [‐8.92, 6.72]

Figuras y tablas -
Comparison 16. Principal Investigator Global Assessment of Change at week 4
Comparison 17. Patient Analog Pain Assessment at week 4

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 10,000U BtB versus Placebo Show forest plot

2

150

Mean Difference (IV, Fixed, 95% CI)

19.63 [11.69, 27.56]

1.1 BtA resistant patients

1

77

Mean Difference (IV, Fixed, 95% CI)

20.40 [9.90, 30.90]

1.2 BtA responder patients

1

73

Mean Difference (IV, Fixed, 95% CI)

18.60 [6.50, 30.70]

2 5000 U BtB versus Placebo Show forest plot

1

72

Mean Difference (IV, Fixed, 95% CI)

18.0 [5.69, 30.31]

2.1 BtA responder patients

1

72

Mean Difference (IV, Fixed, 95% CI)

18.0 [5.69, 30.31]

3 10,000 U BtB versus 5000 U BtB Show forest plot

1

73

Mean Difference (IV, Fixed, 95% CI)

0.60 [‐11.33, 12.53]

3.1 BtA responder patients

1

73

Mean Difference (IV, Fixed, 95% CI)

0.60 [‐11.33, 12.53]

Figuras y tablas -
Comparison 17. Patient Analog Pain Assessment at week 4
Comparison 18. Any Adverse Event

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 5000 U BtB versus Placebo Show forest plot

1

72

Peto Odds Ratio (Peto, Fixed, 95% CI)

1.58 [0.42, 5.96]

2 10,000 U BtB versus Placebo Show forest plot

2

150

Peto Odds Ratio (Peto, Fixed, 95% CI)

1.90 [0.72, 4.99]

3 BtB (5000‐10,000 U) vs Placebo Show forest plot

2

186

Peto Odds Ratio (Peto, Fixed, 95% CI)

2.10 [0.84, 5.24]

4 BtB (5000 U) versus BtB (10,000 U) Show forest plot

1

73

Peto Odds Ratio (Peto, Fixed, 95% CI)

1.83 [0.51, 6.52]

Figuras y tablas -
Comparison 18. Any Adverse Event
Comparison 19. Dry Mouth Adverse Event

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 2500 U BtB versus Placebo Show forest plot

1

61

Peto Odds Ratio (Peto, Fixed, 95% CI)

0.97 [0.06, 15.84]

2 5000 U BtB versus Placebo Show forest plot

2

133

Peto Odds Ratio (Peto, Fixed, 95% CI)

3.55 [0.99, 12.76]

3 10,000 U BtB versus Placebo Show forest plot

3

210

Peto Odds Ratio (Peto, Fixed, 95% CI)

7.76 [3.87, 15.54]

4 BtB (2500‐10,000 U) vs Placebo Show forest plot

3

307

Peto Odds Ratio (Peto, Fixed, 95% CI)

5.19 [2.69, 10.03]

5 BtB (2500‐5000 U) versus BtB (10,000 U) Show forest plot

2

167

Peto Odds Ratio (Peto, Fixed, 95% CI)

0.19 [0.09, 0.40]

Figuras y tablas -
Comparison 19. Dry Mouth Adverse Event
Comparison 20. Dysphagia Adverse Event

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 2500 U BtB versus Placebo Show forest plot

1

61

Peto Odds Ratio (Peto, Fixed, 95% CI)

8.23 [1.34, 50.56]

2 5000 U BtB versus Placebo Show forest plot

2

133

Peto Odds Ratio (Peto, Fixed, 95% CI)

4.77 [1.15, 19.74]

3 10,000 U BtB versus Placebo Show forest plot

3

210

Peto Odds Ratio (Peto, Fixed, 95% CI)

6.20 [2.87, 13.37]

4 BtB (2500‐10,000 U) versus Placebo Show forest plot

3

308

Peto Odds Ratio (Peto, Fixed, 95% CI)

4.37 [2.18, 8.79]

5 BtB (2500‐5000 U) versus BtB (10,000 U) Show forest plot

2

165

Peto Odds Ratio (Peto, Fixed, 95% CI)

0.42 [0.18, 0.98]

Figuras y tablas -
Comparison 20. Dysphagia Adverse Event
Comparison 21. Pain secondary to CD Adverse Event

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 2500 U BtB versus Placebo Show forest plot

1

61

Peto Odds Ratio (Peto, Fixed, 95% CI)

0.70 [0.15, 3.35]

2 5000 U BtB versus Placebo Show forest plot

2

133

Peto Odds Ratio (Peto, Fixed, 95% CI)

1.09 [0.46, 2.56]

3 10,000 U BtB versus Placebo Show forest plot

3

210

Peto Odds Ratio (Peto, Fixed, 95% CI)

1.22 [0.63, 2.33]

4 BtB (2500‐10,000 U) versus Placebo Show forest plot

3

308

Peto Odds Ratio (Peto, Fixed, 95% CI)

1.10 [0.60, 1.99]

5 BtB (2500‐5000 U) versus BtB (10,000 U) Show forest plot

2

165

Peto Odds Ratio (Peto, Fixed, 95% CI)

0.71 [0.33, 1.56]

Figuras y tablas -
Comparison 21. Pain secondary to CD Adverse Event
Comparison 22. Infection Adverse Event

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 2500 U BtB versus Placebo Show forest plot

1

61

Peto Odds Ratio (Peto, Fixed, 95% CI)

7.94 [1.06, 59.29]

2 5000 U BtB versus Placebo Show forest plot

2

133

Peto Odds Ratio (Peto, Fixed, 95% CI)

1.39 [0.55, 3.49]

3 10,000 U BtB versus Placebo Show forest plot

3

210

Peto Odds Ratio (Peto, Fixed, 95% CI)

0.97 [0.46, 2.07]

4 BtB (2500‐10,000U) versus Placebo Show forest plot

3

308

Peto Odds Ratio (Peto, Fixed, 95% CI)

1.16 [0.61, 2.24]

5 BtB (2500‐5000 U) versus BtB (10,000 U) Show forest plot

2

165

Peto Odds Ratio (Peto, Fixed, 95% CI)

1.59 [0.66, 3.81]

Figuras y tablas -
Comparison 22. Infection Adverse Event
Comparison 23. Injection site pain Adverse Event

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 2500 U BtB versus Placebo Show forest plot

1

61

Peto Odds Ratio (Peto, Fixed, 95% CI)

1.70 [0.39, 7.42]

2 5000 U BtB versus Placebo Show forest plot

2

133

Peto Odds Ratio (Peto, Fixed, 95% CI)

1.34 [0.44, 4.07]

3 10,000 U BtB versus Placebo Show forest plot

3

210

Peto Odds Ratio (Peto, Fixed, 95% CI)

1.84 [0.80, 4.21]

4 BtB (2500‐10,000 U) versus Placebo Show forest plot

3

308

Peto Odds Ratio (Peto, Fixed, 95% CI)

1.66 [0.79, 3.48]

5 BtB (2500‐5000 U) versus BtB (10,000 U) Show forest plot

2

165

Peto Odds Ratio (Peto, Fixed, 95% CI)

0.84 [0.33, 2.16]

Figuras y tablas -
Comparison 23. Injection site pain Adverse Event
Comparison 24. Headache Adverse Event

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 2500 U BtB versus Placebo Show forest plot

1

61

Peto Odds Ratio (Peto, Fixed, 95% CI)

1.48 [0.24, 9.10]

2 5000 U BtB versus Placebo Show forest plot

2

133

Peto Odds Ratio (Peto, Fixed, 95% CI)

2.34 [0.82, 6.69]

3 10,000 U BtB versus Placebo Show forest plot

2

133

Peto Odds Ratio (Peto, Fixed, 95% CI)

1.84 [0.61, 5.54]

4 BtB (2500‐10,000U) versus Placebo Show forest plot

2

231

Peto Odds Ratio (Peto, Fixed, 95% CI)

1.92 [0.81, 4.59]

5 BtB (2500‐5000 U) versus BtB (10,000 U) Show forest plot

2

165

Peto Odds Ratio (Peto, Fixed, 95% CI)

1.25 [0.50, 3.09]

Figuras y tablas -
Comparison 24. Headache Adverse Event
Comparison 25. Flu syndrome Adverse Event

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 2500 U BtB versus Placebo Show forest plot

1

61

Peto Odds Ratio (Peto, Fixed, 95% CI)

7.40 [0.45, 121.11]

2 5000 U BtB versus Placebo Show forest plot

1

61

Peto Odds Ratio (Peto, Fixed, 95% CI)

7.66 [0.77, 76.54]

3 10,000 U BtB versus Placebo Show forest plot

1

60

Peto Odds Ratio (Peto, Fixed, 95% CI)

7.93 [0.79, 79.26]

4 BtB (2500‐10,000 U) versus Placebo Show forest plot

1

122

Peto Odds Ratio (Peto, Fixed, 95% CI)

4.09 [0.78, 21.44]

5 BtB (2500‐5000 U) versus BtB (10,000 U) Show forest plot

1

92

Peto Odds Ratio (Peto, Fixed, 95% CI)

0.96 [0.22, 4.15]

Figuras y tablas -
Comparison 25. Flu syndrome Adverse Event
Comparison 26. Nausea Adverse Event

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 2500 U BtB versus Placebo Show forest plot

1

61

Peto Odds Ratio (Peto, Fixed, 95% CI)

2.77 [0.37, 20.69]

2 5000 U BtB versus Placebo Show forest plot

1

61

Peto Odds Ratio (Peto, Fixed, 95% CI)

0.97 [0.06, 15.84]

3 10,000 U BtB versus Placebo Show forest plot

2

137

Peto Odds Ratio (Peto, Fixed, 95% CI)

2.28 [0.73, 7.12]

4 BtB (2500‐10,000 U) versus Placebo Show forest plot

2

199

Peto Odds Ratio (Peto, Fixed, 95% CI)

2.03 [0.70, 5.86]

5 BtB (2500‐5000 U) versus BtB (10,000 U) Show forest plot

1

92

Peto Odds Ratio (Peto, Fixed, 95% CI)

0.61 [0.12, 3.11]

Figuras y tablas -
Comparison 26. Nausea Adverse Event
Comparison 27. Pain Adverse Event

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 2500 U BtB versus Placebo Show forest plot

1

61

Peto Odds Ratio (Peto, Fixed, 95% CI)

0.97 [0.13, 7.22]

2 5000 U BtB versus Placebo Show forest plot

2

133

Peto Odds Ratio (Peto, Fixed, 95% CI)

0.69 [0.21, 2.23]

3 10,000 U BtB versus Placebo Show forest plot

2

133

Peto Odds Ratio (Peto, Fixed, 95% CI)

1.82 [0.68, 4.82]

4 BtB (2500‐10,000 U) versus Placebo Show forest plot

2

231

Peto Odds Ratio (Peto, Fixed, 95% CI)

1.17 [0.48, 2.87]

5 BtB (2500‐5000 U) vs BtB (10,000 U) Show forest plot

2

165

Peto Odds Ratio (Peto, Fixed, 95% CI)

0.38 [0.14, 1.03]

Figuras y tablas -
Comparison 27. Pain Adverse Event
Comparison 28. Dyspepsia Adverse Event

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 5000 U BtB versus Placebo Show forest plot

1

72

Peto Odds Ratio (Peto, Fixed, 95% CI)

0.35 [0.05, 2.61]

2 10,000 U BtB versus Placebo Show forest plot

1

73

Peto Odds Ratio (Peto, Fixed, 95% CI)

1.33 [0.28, 6.23]

3 BtB (5000‐10,000 U) versus Placebo Show forest plot

1

109

Peto Odds Ratio (Peto, Fixed, 95% CI)

0.81 [0.18, 3.70]

4 BtB (5000 U) versus BtB (10,000 U) Show forest plot

1

73

Peto Odds Ratio (Peto, Fixed, 95% CI)

0.29 [0.05, 1.75]

Figuras y tablas -
Comparison 28. Dyspepsia Adverse Event