Scolaris Content Display Scolaris Content Display

Cochrane Database of Systematic Reviews

Intervenciones para el tratamiento de la colitis colágena

Información

DOI:
https://doi.org/10.1002/14651858.CD003575.pub6Copiar DOI
Base de datos:
  1. Cochrane Database of Systematic Reviews
Versión publicada:
  1. 11 noviembre 2017see what's new
Tipo:
  1. Intervention
Etapa:
  1. Review
Grupo Editorial Cochrane:
  1. Grupo Cochrane de Salud digestiva

Copyright:
  1. Copyright © 2017 The Cochrane Collaboration. Published by John Wiley & Sons, Ltd.

Cifras del artículo

Altmetric:

Citado por:

Citado 0 veces por enlace Crossref Cited-by

Contraer

Autores

  • Tahir S Kafil

    Department of Medicine, University of Western Ontario, London, Canada

  • Tran M Nguyen

    Cochrane IBD Group, Robarts Clinical Trials, London, Canada

  • Petrease H Patton

    Schulich School of Medicine & Dentistry, University of Western Ontario, London, Canada

  • John K MacDonald

    Cochrane IBD Group, Robarts Clinical Trials, London, Canada

  • Nilesh Chande

    London Health Sciences Centre ‐ Victoria Hospital, London, Canada

  • John WD McDonald

    Correspondencia a: Cochrane IBD Group, Robarts Clinical Trials, London, Canada

    [email protected]

Declarations of interest

Tahir S Kafil: None known.

Tran M Nguyen: None known.

Petrease H Patton: None known.

John K MacDonald: None known.

Nilesh Chande has received consulting fees from AbbVie, Janssen, Takeda, and Ferring; and speaker's fees from AbbVie, Janssen, and Actavis. All of these financial activities are outside the submitted work.

John WD McDonald: None known.

Acknowledgements

Partial funding for the Cochrane IBD Group (April 1, 2016 ‐ March 31, 2018) has been provided by Crohn's and Colitis Canada (CCC).

Version history

Published

Title

Stage

Authors

Version

2017 Nov 11

Interventions for treating collagenous colitis

Review

Tahir S Kafil, Tran M Nguyen, Petrease H Patton, John K MacDonald, Nilesh Chande, John WD McDonald

https://doi.org/10.1002/14651858.CD003575.pub6

2008 Apr 23

Interventions for treating collagenous colitis

Review

Nilesh Chande, John WD McDonald, John K MacDonald

https://doi.org/10.1002/14651858.CD003575.pub5

2006 Oct 18

Interventions for treating collagenous colitis

Review

Nilesh Chande, John WD McDonald, John K MacDonald

https://doi.org/10.1002/14651858.CD003575.pub4

2005 Oct 19

Interventions for treating collagenous colitis

Review

Nilesh Chande, John WD McDonald, John K MacDonald

https://doi.org/10.1002/14651858.CD003575.pub3

2004 Jan 26

Interventions for treating collagenous colitis

Review

Nilesh Chande, John W D McDonald, John K MacDonald

https://doi.org/10.1002/14651858.CD003575.pub2

2003 Apr 07

Interventions for treating collagenous colitis

Review

Nilesh Chande, John W McDonald, John K MacDonald

https://doi.org/10.1002/14651858.CD003575

Differences between protocol and review

We updated the methods to include a full risk of bias assessment for the included studies. We utilized the GRADE criteria to assess the overall quality of the evidence supporting the primary and secondary outcomes. A PRISMA diagram was used to document the study flow.

Keywords

MeSH

PICO

Population
Intervention
Comparison
Outcome

El uso y la enseñanza del modelo PICO están muy extendidos en el ámbito de la atención sanitaria basada en la evidencia para formular preguntas y estrategias de búsqueda y para caracterizar estudios o metanálisis clínicos. PICO son las siglas en inglés de cuatro posibles componentes de una pregunta de investigación: paciente, población o problema; intervención; comparación; desenlace (outcome).

Para saber más sobre el uso del modelo PICO, puede consultar el Manual Cochrane.

Study flow diagram.
Figuras y tablas -
Figure 1

Study flow diagram.

Risk of bias summary: review authors' judgements about each risk of bias item for each included study.
Figuras y tablas -
Figure 2

Risk of bias summary: review authors' judgements about each risk of bias item for each included study.

Comparison 1 Bismuth subsalicylate versus placebo, Outcome 1 Clinical response.
Figuras y tablas -
Analysis 1.1

Comparison 1 Bismuth subsalicylate versus placebo, Outcome 1 Clinical response.

Comparison 1 Bismuth subsalicylate versus placebo, Outcome 2 Histological response.
Figuras y tablas -
Analysis 1.2

Comparison 1 Bismuth subsalicylate versus placebo, Outcome 2 Histological response.

Comparison 1 Bismuth subsalicylate versus placebo, Outcome 3 Adverse events.
Figuras y tablas -
Analysis 1.3

Comparison 1 Bismuth subsalicylate versus placebo, Outcome 3 Adverse events.

Comparison 1 Bismuth subsalicylate versus placebo, Outcome 4 Withdrawals due to adverse events.
Figuras y tablas -
Analysis 1.4

Comparison 1 Bismuth subsalicylate versus placebo, Outcome 4 Withdrawals due to adverse events.

Comparison 1 Bismuth subsalicylate versus placebo, Outcome 5 Serious adverse events.
Figuras y tablas -
Analysis 1.5

Comparison 1 Bismuth subsalicylate versus placebo, Outcome 5 Serious adverse events.

Comparison 2 Boswellia serrata extract versus placebo, Outcome 1 Clinical response.
Figuras y tablas -
Analysis 2.1

Comparison 2 Boswellia serrata extract versus placebo, Outcome 1 Clinical response.

Comparison 2 Boswellia serrata extract versus placebo, Outcome 2 Adverse events.
Figuras y tablas -
Analysis 2.2

Comparison 2 Boswellia serrata extract versus placebo, Outcome 2 Adverse events.

Comparison 2 Boswellia serrata extract versus placebo, Outcome 3 Withdrawals due to adverse events.
Figuras y tablas -
Analysis 2.3

Comparison 2 Boswellia serrata extract versus placebo, Outcome 3 Withdrawals due to adverse events.

Comparison 3 Budesonide versus mesalazine, Outcome 1 Clinical response.
Figuras y tablas -
Analysis 3.1

Comparison 3 Budesonide versus mesalazine, Outcome 1 Clinical response.

Comparison 3 Budesonide versus mesalazine, Outcome 2 Histological response.
Figuras y tablas -
Analysis 3.2

Comparison 3 Budesonide versus mesalazine, Outcome 2 Histological response.

Comparison 3 Budesonide versus mesalazine, Outcome 3 Adverse events.
Figuras y tablas -
Analysis 3.3

Comparison 3 Budesonide versus mesalazine, Outcome 3 Adverse events.

Comparison 3 Budesonide versus mesalazine, Outcome 4 Withdrawals due to adverse events.
Figuras y tablas -
Analysis 3.4

Comparison 3 Budesonide versus mesalazine, Outcome 4 Withdrawals due to adverse events.

Comparison 3 Budesonide versus mesalazine, Outcome 5 Serious adverse events.
Figuras y tablas -
Analysis 3.5

Comparison 3 Budesonide versus mesalazine, Outcome 5 Serious adverse events.

Comparison 4 Mesalamine versus placebo, Outcome 1 Clinical response.
Figuras y tablas -
Analysis 4.1

Comparison 4 Mesalamine versus placebo, Outcome 1 Clinical response.

Comparison 4 Mesalamine versus placebo, Outcome 2 Histological response.
Figuras y tablas -
Analysis 4.2

Comparison 4 Mesalamine versus placebo, Outcome 2 Histological response.

Comparison 4 Mesalamine versus placebo, Outcome 3 Adverse events.
Figuras y tablas -
Analysis 4.3

Comparison 4 Mesalamine versus placebo, Outcome 3 Adverse events.

Comparison 4 Mesalamine versus placebo, Outcome 4 Withdrawals due to adverse events.
Figuras y tablas -
Analysis 4.4

Comparison 4 Mesalamine versus placebo, Outcome 4 Withdrawals due to adverse events.

Comparison 4 Mesalamine versus placebo, Outcome 5 Serious adverse events.
Figuras y tablas -
Analysis 4.5

Comparison 4 Mesalamine versus placebo, Outcome 5 Serious adverse events.

Comparison 5 Mesalazine vs. mesalazine + cholestyramine, Outcome 1 Clinical response.
Figuras y tablas -
Analysis 5.1

Comparison 5 Mesalazine vs. mesalazine + cholestyramine, Outcome 1 Clinical response.

Comparison 5 Mesalazine vs. mesalazine + cholestyramine, Outcome 2 Adverse events.
Figuras y tablas -
Analysis 5.2

Comparison 5 Mesalazine vs. mesalazine + cholestyramine, Outcome 2 Adverse events.

Comparison 6 Prednisolone versus placebo, Outcome 1 Clinical response.
Figuras y tablas -
Analysis 6.1

Comparison 6 Prednisolone versus placebo, Outcome 1 Clinical response.

Comparison 6 Prednisolone versus placebo, Outcome 2 Withdrawals due to adverse events.
Figuras y tablas -
Analysis 6.2

Comparison 6 Prednisolone versus placebo, Outcome 2 Withdrawals due to adverse events.

Comparison 7 Probiotics versus placebo, Outcome 1 Clinical response.
Figuras y tablas -
Analysis 7.1

Comparison 7 Probiotics versus placebo, Outcome 1 Clinical response.

Comparison 7 Probiotics versus placebo, Outcome 2 Adverse events.
Figuras y tablas -
Analysis 7.2

Comparison 7 Probiotics versus placebo, Outcome 2 Adverse events.

Comparison 7 Probiotics versus placebo, Outcome 3 Withdrawals due to adverse events.
Figuras y tablas -
Analysis 7.3

Comparison 7 Probiotics versus placebo, Outcome 3 Withdrawals due to adverse events.

Comparison 8 Budesonide versus placebo, Outcome 1 Clinical response.
Figuras y tablas -
Analysis 8.1

Comparison 8 Budesonide versus placebo, Outcome 1 Clinical response.

Comparison 8 Budesonide versus placebo, Outcome 2 Clinical response sensitivity analysis excluding Miehlke 2014.
Figuras y tablas -
Analysis 8.2

Comparison 8 Budesonide versus placebo, Outcome 2 Clinical response sensitivity analysis excluding Miehlke 2014.

Comparison 8 Budesonide versus placebo, Outcome 3 Histological response.
Figuras y tablas -
Analysis 8.3

Comparison 8 Budesonide versus placebo, Outcome 3 Histological response.

Comparison 8 Budesonide versus placebo, Outcome 4 Histological response sensitivity analysis excluding Miehlke 2014.
Figuras y tablas -
Analysis 8.4

Comparison 8 Budesonide versus placebo, Outcome 4 Histological response sensitivity analysis excluding Miehlke 2014.

Comparison 8 Budesonide versus placebo, Outcome 5 Maintenance of clinical response.
Figuras y tablas -
Analysis 8.5

Comparison 8 Budesonide versus placebo, Outcome 5 Maintenance of clinical response.

Comparison 8 Budesonide versus placebo, Outcome 6 Maintenance of histological response.
Figuras y tablas -
Analysis 8.6

Comparison 8 Budesonide versus placebo, Outcome 6 Maintenance of histological response.

Comparison 8 Budesonide versus placebo, Outcome 7 Adverse events.
Figuras y tablas -
Analysis 8.7

Comparison 8 Budesonide versus placebo, Outcome 7 Adverse events.

Comparison 8 Budesonide versus placebo, Outcome 8 Withdrawals due to adverse events.
Figuras y tablas -
Analysis 8.8

Comparison 8 Budesonide versus placebo, Outcome 8 Withdrawals due to adverse events.

Comparison 8 Budesonide versus placebo, Outcome 9 Serious adverse events.
Figuras y tablas -
Analysis 8.9

Comparison 8 Budesonide versus placebo, Outcome 9 Serious adverse events.

Summary of findings for the main comparison. Bismuth subsalicylate versus placebo for treating collagenous colitis

Bismuth subsalicylate versus placebo for treating collagenous colitis

Patient or population: Patients with collagenous colitis
Setting: Outpatient
Intervention: Bismuth subsalicylate
Comparison: Placebo

Outcomes

Anticipated absolute effects* (95% CI)

Relative effect
(95% CI)

№ of participants
(studies)

Quality of the evidence
(GRADE)

Comments

Risk with placebo

Risk with Bismuth subsalicylate

Clinical response

0 per 10001

0 per 1000
(0 to 0)

RR 10.80
(0.75 to 155.93)

9
(1 RCT)

⊕⊝⊝⊝
very low2,3

Histological response

0 per 10001

0 per 1000
(0 to 0)

RR 10.80
(0.75 to 155.93)

9
(1 RCT)

⊕⊝⊝⊝
very low2,3

*The risk in the intervention group (and its 95% confidence interval) is based on the assumed risk in the comparison group and the relative effect of the intervention (and its 95% CI).

CI: Confidence interval; RR: Risk ratio

GRADE Working Group grades of evidence
High quality: We are very confident that the true effect lies close to that of the estimate of the effect
Moderate quality: We are moderately confident in the effect estimate: The true effect is likely to be close to the estimate of the effect, but there is a possibility that it is substantially different
Low quality: Our confidence in the effect estimate is limited: The true effect may be substantially different from the estimate of the effect
Very low quality: We have very little confidence in the effect estimate: The true effect is likely to be substantially different from the estimate of effect

1 Control group risk comes from control arm of the included study.
2 Downgraded two levels due to very sparse data (4 events).
3 Downgraded one level due to unclear risk of bias for random sequence generation and allocation concealment.

Figuras y tablas -
Summary of findings for the main comparison. Bismuth subsalicylate versus placebo for treating collagenous colitis
Summary of findings 2. Boswellia serrata extract versus placebo for treating collagenous colitis

Boswellia serrata extract versus placebo for treating collagenous colitis

Patient or population: Patients with collagenous colitis
Setting: Outpatient
Intervention:Boswellia serrata extract
Comparison: Placebo

Outcomes

Anticipated absolute effects* (95% CI)

Relative effect
(95% CI)

№ of participants
(studies)

Quality of the evidence
(GRADE)

Comments

Risk with placebo

Risk with Boswellia serrata extract

Clinical response

267 per 10001

437 per 1000
(160 to 1000)

RR 1.64
(0.60 to 4.49)

31
(1 RCT)

⊕⊕⊝⊝
low2

Adverse events

67 per 10001

125 per 1000
(13 to 1000)

RR 1.88
(0.19 to 18.60)

31
(1 RCT)

⊕⊕⊝⊝
low3

Withdrawals due to adverse events

0 per 10001

0 per 1000
(0 to 0)

RR 2.82
(0.12 to 64.39)

31
(1 RCT)

⊕⊕⊝⊝
low4

*The risk in the intervention group (and its 95% confidence interval) is based on the assumed risk in the comparison group and the relative effect of the intervention (and its 95% CI).

CI: Confidence interval; RR: Risk ratio

GRADE Working Group grades of evidence
High quality: We are very confident that the true effect lies close to that of the estimate of the effect
Moderate quality: We are moderately confident in the effect estimate: The true effect is likely to be close to the estimate of the effect, but there is a possibility that it is substantially different
Low quality: Our confidence in the effect estimate is limited: The true effect may be substantially different from the estimate of the effect
Very low quality: We have very little confidence in the effect estimate: The true effect is likely to be substantially different from the estimate of effect

1 Control group risk comes from control arm of the included study.
2 Downgraded two levels due to very sparse data (11 events).
3 Downgraded two levels due to very sparse data and wide confidence interval (3 events).
4 Study had very few events. Downgraded two levels due to very sparse data and wide confidence interval (1 event).

Figuras y tablas -
Summary of findings 2. Boswellia serrata extract versus placebo for treating collagenous colitis
Summary of findings 3. Budesonide versus mesalazine for treating collagenous colitis

Budesonide versus mesalazine for treating collagenous colitis

Patient or population: Patients with collagenous colitis
Setting: Outpatient
Intervention: Budesonide
Comparison: Mesalazine

Outcomes

Anticipated absolute effects* (95% CI)

Relative effect
(95% CI)

№ of participants
(studies)

Quality of the evidence
(GRADE)

Comments

Risk with mesalazine

Risk with Budesonide

Clinical response

440 per 10001

801 per 1000
(497 to 1000)

RR 1.82
(1.13 to 2.93)

55
(1 RCT)

⊕⊕⊝⊝
low2

Histological response

440 per 10001

867 per 1000
(546 to 1000)

RR 1.97
(1.24 to 3.13)

55
(1 RCT)

⊕⊕⊝⊝
low3

Adverse events

680 per 10001

469 per 1000
(292 to 748)

RR 0.69
(0.43 to 1.10)

55
(1 RCT)

⊕⊕⊝⊝
low4

Withdrawals due to adverse events

160 per 10001

14 per 1000
(2 to 264)

RR 0.09
(0.01 to 1.65)

55
(1 RCT)

⊕⊕⊝⊝
low5

Serious adverse events

120 per 10001

14 per 1000
(1 to 265)

RR 0.12
(0.01 to 2.21)

55
(1 RCT)

⊕⊕⊝⊝
low6

*The risk in the intervention group (and its 95% confidence interval) is based on the assumed risk in the comparison group and the relative effect of the intervention (and its 95% CI).

CI: Confidence interval; RR: Risk ratio; OR: Odds ratio;

GRADE Working Group grades of evidence
High quality: We are very confident that the true effect lies close to that of the estimate of the effect
Moderate quality: We are moderately confident in the effect estimate: The true effect is likely to be close to the estimate of the effect, but there is a possibility that it is substantially different
Low quality: Our confidence in the effect estimate is limited: The true effect may be substantially different from the estimate of the effect
Very low quality: We have very little confidence in the effect estimate: The true effect is likely to be substantially different from the estimate of effect

1 Control group risk comes from control arm of the included study.
2 Downgraded two levels due to very sparse data (35 events).
3 Downgraded two levels due to very sparse data (37 events).
4 Downgraded two levels due to very sparse data (31 events).
5 Downgraded two levels due to very sparse data and wide confidence interval (4 events).
6 Downgraded two levels due to very sparse data and wide confidence intervals (3 events).

Figuras y tablas -
Summary of findings 3. Budesonide versus mesalazine for treating collagenous colitis
Summary of findings 4. Mesalamine versus placebo for treating collagenous colitis

Mesalamine versus placebo for treating collagenous colitis

Patient or population: Patients with collagenous colitis
Setting: Outpatient
Intervention: Mesalamine
Comparison: Placebo

Outcomes

Anticipated absolute effects* (95% CI)

Relative effect
(95% CI)

№ of participants
(studies)

Quality of the evidence
(GRADE)

Comments

Risk with placebo

Risk with Mesalamine

Clinical response

595 per 10001

440 per 1000
(262 to 737)

RR 0.74
(0.44 to 1.24)

62
(1 RCT)

⊕⊕⊝⊝
low2

Histological response

514 per 10001

442 per 1000
(257 to 755)

RR 0.86
(0.50 to 1.47)

62
(1 RCT)

⊕⊕⊝⊝
low3

Adverse events

541 per 10001

681 per 1000
(454 to 1000)

RR 1.26
(0.84 to 1.88)

62
(1 RCT)

⊕⊕⊝⊝
low4

Withdrawals due to adverse events

27 per 10001

160 per 1000
(19 to 1000)

RR 5.92
(0.70 to 49.90)

62
(1 RCT)

⊕⊕⊝⊝
low5

Serious adverse events

27 per 10001

120 per 1000
(13 to 1000)

RR 4.44
(0.49 to 40.29)

62
(1 RCT)

⊕⊕⊝⊝
low6

*The risk in the intervention group (and its 95% confidence interval) is based on the assumed risk in the comparison group and the relative effect of the intervention (and its 95% CI).

CI: Confidence interval; RR: Risk ratio; OR: Odds ratio;

GRADE Working Group grades of evidence
High quality: We are very confident that the true effect lies close to that of the estimate of the effect
Moderate quality: We are moderately confident in the effect estimate: The true effect is likely to be close to the estimate of the effect, but there is a possibility that it is substantially different
Low quality: Our confidence in the effect estimate is limited: The true effect may be substantially different from the estimate of the effect
Very low quality: We have very little confidence in the effect estimate: The true effect is likely to be substantially different from the estimate of effect

1 Control group risk comes from control arm of the included study.
2 Downgraded two levels due to very sparse data (33 events).
3 Downgraded two levels due to very sparse data (30 events).
4 Downgraded two levels due to very sparse data (37 events).
5 Downgraded two levels due to very sparse data and wide confidence interval (5 events).
6 Downgraded two levels due to very sparse data and wide confidence interval (4 events).

Figuras y tablas -
Summary of findings 4. Mesalamine versus placebo for treating collagenous colitis
Summary of findings 5. Mesalazine versus mesalazine + cholestyramine for treating collagenous colitis

Mesalazine vs. mesalazine + cholestyramine for treating collagenous colitis

Patient or population: Patients with collagenous colitis
Setting: Outpatient
Intervention: Mesalazine
Comparison: Mesalazine + cholestyramine

Outcomes

Anticipated absolute effects* (95% CI)

Relative effect
(95% CI)

№ of participants
(studies)

Quality of the evidence
(GRADE)

Comments

Risk with mesalazine + cholestyramine

Risk with Mesalazine

Clinical response

167 per 10001

123 per 1000
(83 to 180)

RR 0.74
(0.50 to 1.08)

23
(1 RCT)

⊕⊝⊝⊝
very low2,3

Adverse events

0 per 10001

0 per 1000
(0 to 0)

RR 0.22
(0.01 to 4.07)

23
(1 RCT)

⊕⊝⊝⊝
very low2,4

*The risk in the intervention group (and its 95% confidence interval) is based on the assumed risk in the comparison group and the relative effect of the intervention (and its 95% CI).

CI: Confidence interval; RR: Risk ratio; OR: Odds ratio;

GRADE Working Group grades of evidence
High quality: We are very confident that the true effect lies close to that of the estimate of the effect
Moderate quality: We are moderately confident in the effect estimate: The true effect is likely to be close to the estimate of the effect, but there is a possibility that it is substantially different
Low quality: Our confidence in the effect estimate is limited: The true effect may be substantially different from the estimate of the effect
Very low quality: We have very little confidence in the effect estimate: The true effect is likely to be substantially different from the estimate of effect

1 Control group risk comes from control arm of the included study.
2 Downgraded one level due to high risk of bias for blinding.
3 Downgraded two levels due to very sparse data (20 events).
4 Downgraded two levels due to very sparse data and wide confidence interval (2 events).

Figuras y tablas -
Summary of findings 5. Mesalazine versus mesalazine + cholestyramine for treating collagenous colitis
Summary of findings 6. Prednisolone versus placebo for treating collagenous colitis

Prednisolone versus placebo for treating collagenous colitis

Patient or population: Patients with collagenous colitis
Setting: Outpatient
Intervention: Prednisolone
Comparison: Placebo

Outcomes

Anticipated absolute effects* (95% CI)

Relative effect
(95% CI)

№ of participants
(studies)

Quality of the evidence
(GRADE)

Comments

Risk with placebo

Risk with Prednisolone

Clinical response

0 per 10001

0 per 1000
(0 to 0)

RR 4.89
(0.35 to 68.83)

11
(1 RCT)

⊕⊝⊝⊝
very low2,3

*The risk in the intervention group (and its 95% confidence interval) is based on the assumed risk in the comparison group and the relative effect of the intervention (and its 95% CI).

CI: Confidence interval; RR: Risk ratio; OR: Odds ratio;

GRADE Working Group grades of evidence
High quality: We are very confident that the true effect lies close to that of the estimate of the effect
Moderate quality: We are moderately confident in the effect estimate: The true effect is likely to be close to the estimate of the effect, but there is a possibility that it is substantially different
Low quality: Our confidence in the effect estimate is limited: The true effect may be substantially different from the estimate of the effect
Very low quality: We have very little confidence in the effect estimate: The true effect is likely to be substantially different from the estimate of effect

1 Control group risk comes from control arm of the included study.
2 Downgraded two levels due to very sparse data (5 events).
3 Downgraded one level due to unclear risk of bias for random sequence generation and allocation concealment.

Figuras y tablas -
Summary of findings 6. Prednisolone versus placebo for treating collagenous colitis
Summary of findings 7. Probiotics versus placebo for treating collagenous colitis

Probiotics versus placebo for treating collagenous colitis

Patient or population: Patients with collagenous colitis
Setting: Outpatients
Intervention: Probiotics
Comparison: Placebo

Outcomes

Anticipated absolute effects* (95% CI)

Relative effect
(95% CI)

№ of participants
(studies)

Quality of the evidence
(GRADE)

Comments

Risk with placebo

Risk with Probiotics

Clinical response

125 per 10001

286 per 1000
(40 to 1000)

RR 2.29
(0.32 to 16.13)

29
(1 RCT)

⊕⊝⊝⊝
very low2,3

Adverse events

500 per 10001

285 per 1000
(110 to 750)

RR 0.57
(0.22 to 1.50)

29
(1 RCT)

⊕⊝⊝⊝
very low3,4

*The risk in the intervention group (and its 95% confidence interval) is based on the assumed risk in the comparison group and the relative effect of the intervention (and its 95% CI).

CI: Confidence interval; RR: Risk ratio; OR: Odds ratio;

GRADE Working Group grades of evidence
High quality: We are very confident that the true effect lies close to that of the estimate of the effect
Moderate quality: We are moderately confident in the effect estimate: The true effect is likely to be close to the estimate of the effect, but there is a possibility that it is substantially different
Low quality: Our confidence in the effect estimate is limited: The true effect may be substantially different from the estimate of the effect
Very low quality: We have very little confidence in the effect estimate: The true effect is likely to be substantially different from the estimate of effect

1 Control group risk comes from control arm of the included study.
2 Downgraded two levels due to very sparse data and wide confidence interval (7 events).
3 Downgraded one level due to unclear risk of bias for allocation concealment.
4 Downgraded two levels due to very sparse data and wide confidence interval (10 events).

Figuras y tablas -
Summary of findings 7. Probiotics versus placebo for treating collagenous colitis
Summary of findings 8. Budesonide versus placebo for treating collagenous colitis

Budesonide versus placebo for treating collagenous colitis

Patient or population: Patients with collagenous colitis
Setting: Outpatient
Intervention: Budesonide
Comparison: placebo

Outcomes

Anticipated absolute effects* (95% CI)

Relative effect
(95% CI)

№ of participants
(studies)

Quality of the evidence
(GRADE)

Comments

Risk with placebo

Risk with Budesonide

Clinical response

sensitivity analysis excluding Miehlke

2014

170 per 10001

722 per 1000
(388 to 1000)

RR 4.56

(2.43 to 8.55)

94
(3 RCTs)

⊕⊕⊝⊝
low2,3

Histological response

sensitivity analysis excluding Miehlke

2014

170 per 10001

706 per 1000
(383 to 1000)

RR 4.15

(2.25 to 7.66)

94
(3 RCTs)

⊕⊕⊝⊝
low3,4

Maintenance of clinical response

205 per 10001

675 per 1000
(436 to 1000)

RR 3.30
(2.13 to 5.09)

172
(3 RCTs)

⊕⊕⊝⊝
low5,6

Maintenance of histological response

150 per 10001

476 per 1000
(216 to 1000)

RR 3.17
(1.44 to 6.95)

80
(2 RCTs)

⊕⊝⊝⊝
very low7,8

Adverse events

420 per 10001

496 per 1000
(386 to 634)

RR 1.18
(0.92 to 1.51)

290
(5 RCTs)

⊕⊕⊕⊝
low6,9

Withdrawals due to adverse events

73 per 10001

71 per 1000
(31to 158)

RR 0.97
(0.43 to 2.17)

290
(5 RCTs)

⊕⊕⊝⊝
very low6,10

Serious adverse events

11 per 10001

12 per 1000
(2 to 88)

RR 1.11
(0.15 to 8.01)

175
(4 RCTs)

⊕⊕⊝⊝
very low11,12

*The risk in the intervention group (and its 95% confidence interval) is based on the assumed risk in the comparison group and the relative effect of the intervention (and its 95% CI).

CI: Confidence interval; RR: Risk ratio; OR: Odds ratio;

GRADE Working Group grades of evidence
High quality: We are very confident that the true effect lies close to that of the estimate of the effect
Moderate quality: We are moderately confident in the effect estimate: The true effect is likely to be close to the estimate of the effect, but there is a possibility that it is substantially different
Low quality: Our confidence in the effect estimate is limited: The true effect may be substantially different from the estimate of the effect
Very low quality: We have very little confidence in the effect estimate: The true effect is likely to be substantially different from the estimate of effect

1 Control group risk comes from control arm of meta‐analysis, based on included trials.
2 Downgraded one level due to sparse data (46 events).
3 Downgraded one level due unclear risk of bias for random sequence generation and blinding in one study and random sequence generation and incomplete outcome data in another study in the pooled analysis.
4 Downgraded one level due to sparse data (42 events).
5 Downgraded one level due to sparse data (75 events).
6 Downgraded one level due unclear risk of bias for sequence generation in one study and allocation concealment in two studies in the pooled analysis.
7 Downgraded two levels due to very sparse data (25 events).
8 Downgraded one level due unclear risk of bias for random sequence generation and allocation concealment in one study in the pooled analysis.
9 Downgraded one level due to sparse data (131 events).
10 Downgraded two levels due to very sparse data (21 events).
11 Downgraded two levels due to very sparse data and wide confidence interval (2 events).
12 Downgraded one level due unclear risk of bias for sequence generation in two studies, blinding in one study and allocation concealment in one study in the pooled analysis.

Figuras y tablas -
Summary of findings 8. Budesonide versus placebo for treating collagenous colitis
Table 1. Unblinded studies of therapies for collagenous colitis

Therapy

References

5‐ASA compounds

Weidner 1984, Farah 1985, Giardiello 1987, Wang 1987, Jessurun 1987, Eckstein 1988, Mason 1988, Rokkas 1988, O'Mahony 1990, Gubbins 1991, Giardiello 1991, Carpenter 1992, Fasoli 1994, Katanuma 1995, Bohr 1996, Goff 1997, Mullhaupt 1998, Wang 1999, Bonner 2000, Fielder 2001, Pardi 2001, Kimble 2001, Bozdech 2001, Abdo 2002, Fernandez 2003, Honkoop 2003, Randall 2003, Buchman 2004, Mowat 2005, Fekih 2006, Roe 2006, Madisch 2006, Narvaez 2006, de la Iglesia 2007, Ekiz 2007, Freeman 2007, Koch 2007, Halsey 2007, Rubio‐Tapia 2007

Antibiotics

Mogensen 1984, Wang 1987, Puri 1994, Pimental 1995, Bohr 1996, Mullhaupt 1998, Swensson 1999, Honkoop 2001, Madisch 2006

Antihistamine

Benchimol 2007

Azathioprine/6‐mercaptopurine

Goff 1997, Pardi 2001, Roe 2006, Wickbom 2006

Bismuth subsalicylate

Girard 1987, Fine 1998, Bohr 1999, Bozdech 2001, Buchman 2004, Madisch 2006, Chande 2007, Rubio‐Tapia 2007

Budesonide

Van Gossum 1998, Delarive 1998, Lanyi 1999, Tromm 1999, Bohr 1999, Mueller‐Wittlic 2000, Bajor 2003, Fernandez 2003, Honkoop 2003, Buchman 2004, Hawkins 2004, Barta 2005, Bajor 2006, Roe 2006, Wickbom 2006, Freeman 2006, Hilmer 2006, Chopra 2006, Kiesslich 2006, de la Iglesia 2007, Freeman 2007, Brar 2007

Cholestyramine/colestipol

Andersen 1993, Bohr 1996, Ung 2000, Fernandez 2003, Baert 2004, Mahmoud 2005, Hilmer 2006

Cyclosporine

Eijsbouts 1995, Roe 2006

Dietary modification

Fekih 2006

Elemental diet

Teahon 1994

Ketotifen

Marshall 1998, Benchimol 2007

Methotrexate

Bhullar 1996, Hillman 2001, Riddell 2007

Octreotide

Fisher 1996, Goff 1997

Pentoxifylline

Peterson 1996, Williams 1998

Probiotics

Tromm 2004

Steroids, intravenous

Pardi 2001, Buchman 2004

Steroids, oral

Palmer 1986, Hamilton 1986, Giardiello 1987, Wang 1987, Jessurun 1987, O'Mahony 1990, Sloth 1991, Giardiello 1991, Carpenter 1992, Fasoli 1994, Pimental 1995, Katanuma 1995, Bohr 1996, Goff 1997, Duncan 1997, Wang 1999, Castellano 1999, Swensson 1999, Bonner 2000, Fielder 2001, Persoz 2001, Honkoop 2001, Abdo 2002, Fernandez 2003, Honkoop 2003, Buchman 2004, Mowat 2005, O'Beirne 2005, Taha 2006, Madisch 2006, Narvaez 2006, Rubio‐Tapia 2007

Steroids, topical

Wang 1987, Mason 1988

Surgery

Jarnerot 1995, Alikhan 1997, Munch 2005, Shen 2006, Davis 2007

Symptomatic therapy: antidiarrheal agents, bulking agents, spasmolytics

Bamford 1982, Eaves 1983, Giardiello 1987, Wang 1987, Gubbins 1991, Pimental 1995, Katanuma 1995, Bohr 1996, Goff 1997, Mullhaupt 1998, Wang 1999, Fielder 2001, Abdo 2002, Honkoop 2003, Mowat 2005, Smith 2005, Fekih 2006, Hilmer 2006, Madisch 2006, Ekiz 2007, Khawaja 2007, Halsey 2007

Verapamil

Scheidler 2001

Figuras y tablas -
Table 1. Unblinded studies of therapies for collagenous colitis
Comparison 1. Bismuth subsalicylate versus placebo

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 Clinical response Show forest plot

1

Risk Ratio (M‐H, Fixed, 95% CI)

Totals not selected

2 Histological response Show forest plot

1

Risk Ratio (M‐H, Fixed, 95% CI)

Totals not selected

3 Adverse events Show forest plot

1

9

Risk Ratio (M‐H, Fixed, 95% CI)

0.0 [0.0, 0.0]

4 Withdrawals due to adverse events Show forest plot

1

9

Risk Ratio (M‐H, Fixed, 95% CI)

0.0 [0.0, 0.0]

5 Serious adverse events Show forest plot

1

9

Risk Ratio (M‐H, Fixed, 95% CI)

0.0 [0.0, 0.0]

Figuras y tablas -
Comparison 1. Bismuth subsalicylate versus placebo
Comparison 2. Boswellia serrata extract versus placebo

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 Clinical response Show forest plot

1

Risk Ratio (M‐H, Fixed, 95% CI)

Totals not selected

2 Adverse events Show forest plot

1

Risk Ratio (M‐H, Fixed, 95% CI)

Totals not selected

3 Withdrawals due to adverse events Show forest plot

1

Risk Ratio (M‐H, Fixed, 95% CI)

Totals not selected

Figuras y tablas -
Comparison 2. Boswellia serrata extract versus placebo
Comparison 3. Budesonide versus mesalazine

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 Clinical response Show forest plot

1

Risk Ratio (M‐H, Fixed, 95% CI)

Totals not selected

2 Histological response Show forest plot

1

Risk Ratio (M‐H, Fixed, 95% CI)

Totals not selected

3 Adverse events Show forest plot

1

Risk Ratio (M‐H, Fixed, 95% CI)

Totals not selected

4 Withdrawals due to adverse events Show forest plot

1

Risk Ratio (M‐H, Fixed, 95% CI)

Totals not selected

5 Serious adverse events Show forest plot

1

Risk Ratio (M‐H, Fixed, 95% CI)

Totals not selected

Figuras y tablas -
Comparison 3. Budesonide versus mesalazine
Comparison 4. Mesalamine versus placebo

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 Clinical response Show forest plot

1

Risk Ratio (M‐H, Fixed, 95% CI)

Totals not selected

2 Histological response Show forest plot

1

Risk Ratio (M‐H, Fixed, 95% CI)

Totals not selected

3 Adverse events Show forest plot

1

Risk Ratio (M‐H, Fixed, 95% CI)

Totals not selected

4 Withdrawals due to adverse events Show forest plot

1

Risk Ratio (M‐H, Fixed, 95% CI)

Totals not selected

5 Serious adverse events Show forest plot

1

Risk Ratio (M‐H, Fixed, 95% CI)

Totals not selected

Figuras y tablas -
Comparison 4. Mesalamine versus placebo
Comparison 5. Mesalazine vs. mesalazine + cholestyramine

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 Clinical response Show forest plot

1

Risk Ratio (M‐H, Fixed, 95% CI)

Totals not selected

2 Adverse events Show forest plot

1

Risk Ratio (M‐H, Fixed, 95% CI)

Totals not selected

Figuras y tablas -
Comparison 5. Mesalazine vs. mesalazine + cholestyramine
Comparison 6. Prednisolone versus placebo

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 Clinical response Show forest plot

1

Risk Ratio (M‐H, Fixed, 95% CI)

Totals not selected

2 Withdrawals due to adverse events Show forest plot

1

Risk Ratio (M‐H, Fixed, 95% CI)

Totals not selected

Figuras y tablas -
Comparison 6. Prednisolone versus placebo
Comparison 7. Probiotics versus placebo

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 Clinical response Show forest plot

1

Risk Ratio (M‐H, Fixed, 95% CI)

Totals not selected

2 Adverse events Show forest plot

1

Risk Ratio (M‐H, Fixed, 95% CI)

Totals not selected

3 Withdrawals due to adverse events Show forest plot

1

Risk Ratio (M‐H, Fixed, 95% CI)

Totals not selected

Figuras y tablas -
Comparison 7. Probiotics versus placebo
Comparison 8. Budesonide versus placebo

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 Clinical response Show forest plot

4

161

Risk Ratio (M‐H, Random, 95% CI)

2.98 [1.14, 7.75]

2 Clinical response sensitivity analysis excluding Miehlke 2014 Show forest plot

3

94

Risk Ratio (M‐H, Fixed, 95% CI)

4.56 [2.43, 8.55]

3 Histological response Show forest plot

4

161

Risk Ratio (M‐H, Random, 95% CI)

2.68 [1.37, 5.24]

4 Histological response sensitivity analysis excluding Miehlke 2014 Show forest plot

3

94

Risk Ratio (M‐H, Fixed, 95% CI)

4.15 [2.25, 7.66]

5 Maintenance of clinical response Show forest plot

3

172

Risk Ratio (M‐H, Fixed, 95% CI)

3.30 [2.13, 5.09]

6 Maintenance of histological response Show forest plot

2

80

Risk Ratio (M‐H, Fixed, 95% CI)

3.17 [1.44, 6.95]

7 Adverse events Show forest plot

5

290

Risk Ratio (M‐H, Fixed, 95% CI)

1.18 [0.92, 1.51]

8 Withdrawals due to adverse events Show forest plot

5

290

Risk Ratio (M‐H, Fixed, 95% CI)

0.97 [0.43, 2.17]

9 Serious adverse events Show forest plot

4

175

Risk Ratio (M‐H, Fixed, 95% CI)

1.11 [0.15, 8.01]

Figuras y tablas -
Comparison 8. Budesonide versus placebo