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Antidepresivos de segunda generación para el trastorno afectivo estacional

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Referencias

Referencias de los estudios incluidos en esta revisión

Lam 1995 {published data only}

Lam R, Gorman C, Michalon M, Steiner M, Levitt A, Corral M, et al. Multicenter, placebo‐controlled study of fluoxetine in seasonal affective disorder. The American Journal of Psychiatry 1995;152(12):1765‐70.

Lam 2006 {published data only}

Enns MW, Cox BJ, Levitt AJ, Levitan RD, Morehouse R, Michalak EE, et al. Personality and seasonal affective disorder: results from the CAN‐SAD study. Journal of Affective Disorders 2006;93(1‐3):35‐42.
Lam RW, Levitt AJ, Levitan RD, Enns MW, Morehouse R, Michalak EE, et al. The Can‐SAD study: a randomized controlled trial of the effectiveness of light therapy and fluoxetine in patients with winter seasonal affective disorder. The American Journal of Psychiatry 2006;163(5):805‐12.
Michalak EE, Murray G, Levitt AJ, Levitan RD, Enns MW, Morehouse R, et al. Quality of life as an outcome indicator in patients with seasonal affective disorder: results from the CAN‐SAD study. Psychological Medicine 2007;37(5):727‐36.
Murray G, Michalak EE, Levitt AJ, Levitan RD, Enns MW, Morehouse R, et al. O sweet spot where art thou? Light treatment of Seasonal Affective Disorder and the circadian time of sleep. Journal of Affective Disorders 2006;90(2‐3):227‐31.
Murray G, Michalak EE, Levitt AJ, Levitan RD, Enns MW, Morehouse R, et al. Therapeutic mechanism in seasonal affective disorder: Do fluoxetine and light operate through advancing circadian phase?. Chronobiology International 2005;22(5):937‐43.

Pjrek 2007 {published data only}

Pjrek E, Winkler D, Stastny J, Praschak‐Rieder N, Willeit M, Kasper S. Escitalopram in seasonal affective disorder: results of an open trial. Pharmacopsychiatry 2007;40(1):20‐4.

Pjrek 2008 {published data only}

Pjrek E, Willeit M, Praschak‐Rieder N, Konstantinidis H, Semlitsch H, Kasper S, Winkler D. Treatment of seasonal affective disorder with duloxetine: an open‐label study. Pharmacopsychiatry 2008;41(3):100‐5.

Pjrek 2009 {published data only}

Hilger E, Willeit M, Praschak‐Rieder N, Stastny J, Neumeister A, Kasper S. Reboxetine in seasonal affective disorder: an open trial. European Neuropsychopharmacology 2001;11:1‐5.
Pjrek E, Konstantinidis H, Assem‐Hilger E, Praschak‐Rieder N, Willeit M, Kasper S, et al. Therapeutic effects of escitalopram and reboxetine in seasonal affective disorder: a pooled analysis. Journal of Psychiatric Research 2009;43:792‐7.
Pjrek E, Winkler D, Stastny J, Praschak‐Rieder N, Willeit M, Kasper S. Escitalopram in seasonal affective disorder: results of an open trial. Pharmacopsychiatry 2007;40(1):20‐4.

Ruhrmann 1998 {published data only}

Ruhrmann S, Kasper S, Hawellek B, Martinez B, Hoflich G, Nickelsen T, et al. Fluoxetine as a treatment alternative to light therapy in seasonal affective disorder (SAD) [abstract]. Pharmacopsychiatry [abstracts from the 18th Symposium of AGNP, Nuremberg 1993] 1993;26:193.
Ruhrmann S, Kasper S, Hawellek B, Martinez B, Höflich G, Nickelson T, Möller H. Effects of fluoxetine versus bright light in the treatment of seasonal affective disorder. Psychological Medicine 1998;28:923‐33.
Ruhrmann S, Kasper S, Hawellek B, Peters S, Rao ML, Hoflich G, et al. Selective serotonin re‐uptake inhibitors for treatment of seasonal affective disorder (SAD) [poster abstract]. Clinical Neuropharmacology 1992;15(Suppl 1, Pt B):341.

Referencias de los estudios excluidos de esta revisión

Blashko 1995 {published data only}

Blashko C. A double‐blind, placebo‐controlled study of sertraline in the treatment of outpatients with seasonal affective disorder. 8th ECNP (European College of Neuropsychopharmacology) Congress. Venice, Italy, 1995.
Blashko, CA. Drug treatment of winter depression: How effective is it, and what can it tell us about the biology of SAD?. Sixth World Congress of Biological Psychiatry. NIce, France, June 22‐27 1997.

GlaxoSmithKline 2003 {published data only}

GlaxoSmithKline. A 7‐month, multicenter, randomized, double‐blind, placebo‐controlled comparison of 150‐300mg/day of extended‐release bupropion hydrochloride (WELLBUTRIN XL) and placebo for the prevention of seasonal affective disorder in subjects with a history of seasonal affective disorder followed by an 8‐Week observational follow‐up phase. GSK ‐ Clinical Study Register [www.gsk‐clinicalstudyregister.com]2003. [WELL AK130930]

GlaxoSmithKline 2003a {published data only}

GlaxoSmithKline. A 7‐Month, multicenter, randomized, double‐blind, placebo‐controlled comparison of 150‐300mg/day of extended‐release bupropion hydrochloride (WELLBUTRIN XL) and placebo for the prevention of seasonal affective disorder in subjects with a history of seasonal affective disorder followed by an 8‐week observational follow‐up phase. GSK ‐ Clinical Study Register [www.gsk‐clinicalstudyregister.com]2003. [WELL AK130936]

GlaxoSmithKline 2004 {published data only}

GlaxoSmithKline. A 7‐month, multicenter, randomized, double‐blind, placebo‐controlled comparison of 150‐300mg/day of extended‐release bupropion hydrochloride (WELLBUTRIN XL) and placebo for the prevention of seasonal affective disorder in subjects with a history of seasonal affective disorder followed by an 8‐week observational follow‐up study. GSK ‐ Clinical Study Register [www.gsk‐clinicalstudyregister.com]2004. [WELL 100006]

Moscovitch 2004 {published data only}

Moscovitch A, Blashko C, Eagles J, Darcout G, Thompson C, Kasper S, et al. A placebo‐controlled study of sertraline in the treatment of outpatients with seasonal affective disorder. Psychopharmacology 2004;171(4):390‐7.

Partonen 1996 {published data only}

Partonen T, Lönnqvist J. Moclobemide and fluoxetine in treatment of seasonal affective disorder. Journal of Affective Disorders 1996;41(2):93‐9.

Referencias adicionales

AHCPR 1993

Agency for Health Care Policy and Research (AHCPR). Depression in Primary Care (Volume 2: Treatment of Major Depression). Vol. 2, Rockville (MD): AHCPR Clinical Practice Guidelines, No. 5.2. Depression Guideline Panel, April 1993.

APA 2000

American Psychiatric Association. Diagnostic and statistical manual of mental disorders (text revision). 4th Edition. Washington DC: American Psychiatric Association, July 2000.

Arrol 2009

Bruce Arroll, C Raina Elley, Tana Fishman, Felicity A Goodyear‐Smith, Tim Kenealy, Grant Blashki, Ngaire Kerse, Stephen MacGilivray. Antidepressants versus placebo for depression in primary care. Cochrane Database of Systematic Reviews 2009, Issue 3. [DOI: 10.1002/14651858.CD007954]

Atkins 2004

Atkins D, Best D, Briss PA, Eccles M, Falck‐Ytter Y, Flottorp S, et al. Grading quality of evidence and strength of recommendations. BMJ (Clinical research ed.) 2004;328(7454):1490.

Barbui 2009

Barbui C, Esposito E, Cipriani A. Selective serotonin reuptake inhibitors and risk of suicide: a systematic review of observational studies. CMAJ : Canadian Medical Association Journal = Journal de l'Association Medicale Canadienne 2009;180(3):291‐7.

Ciarleglio 2011

Ciarleglio CM, Resuehr HES, McMahon DG. Interactions of the serotonin and circadian systems: nature and nurture in rhythms and blues. Neuroscience 1 December 2011;197:8‐16. [DOI: 10.1016/j.neuroscience.2011.09.036]

Cipriani 2005

Cipriani A, Brambilla P, Furukawa T, Geddes J, Gregis M, Hotopf M, Malvini L, Barbui C. Fluoxetine versus other types of pharmacotherapy for depression. Cochrane Database of Systematic Reviews 2005, Issue 4. [DOI: 10.1002/14651858.CD004185.pub2]

Cipriani 2009a

Cipriani A, Santilli C, Furukawa TA, Signoretti A, Nakagawa A, McGuire H, et al. Escitalopram versus other antidepressive agents for depression. Cochrane Database of Systematic Reviews 2009, Issue 2. [DOI: 10.1002/14651858.CD006532.pub2]

Cipriani 2009b

Cipriani A, Furukawa TA, Salanti G, Geddes JR, Higgins JP, Churchill R, et al. Comparative efficacy and acceptability of 12 new‐generation antidepressants: a multiple‐treatments meta‐analysis. Lancet 2009;373(9665):746‐58.

Cipriani 2010

Cipriani A, La Ferla T, Furukawa TA, Signoretti A, Nakagawa A, Churchill R, et al. Sertraline versus other antidepressive agents for depression. Cochrane Database of Systematic Reviews 2010, Issue 1. [DOI: 10.1002/14651858.CD006117.pub4]

Deeks 2003

Deeks JJ, Dinnes J, D'Amico R, Sowden AJ, Sakarovitch C, Song F, et al. Evaluating non‐randomised intervention studies. Health Technology Assessment 2003;7(27):1‐173.

Gartlehner 2008a

Gartlehner G, Gaynes BN, Hansen RA, Thieda P, DeVeaugh‐Geiss A, Krebs EE, et al. Comparative benefits and harms of second‐generation antidepressants: background paper for the American College of Physicians. Annals of Internal Medicine 2008;149(10):734‐50.

Gartlehner 2008b

Gartlehner G, Morgan LC, Thieda P, Thaler K, Hansen RA, Gaynes B, Lohr KN, Carey TS. Drug class review: Second generation antidepressants. Drug Effectiveness Review Project: Oregon Health & Science UniversityOctober 2008, issue 2.

Gartlehner 2009

Gartlehner G, Thaler K, Hansen RA, Gaynes BN. The general and comparative efficacy and safety of duloxetine in major depressive disorder: a systematic review and meta‐analysis. Drug Safety : An International Journal of Medical Toxicology and Drug Experience 2009;32(12):1159‐73.

Gartlehner 2009b

Gartlehner G, Gaynes BN, Hansen RA, Lohr KN. Ranking antidepressants. Lancet 2009 May 23;373(9677).

Gartlehner 2011

Gartlehner G, Hansen RA, Reichenpfader U, Kaminski A, Kien C, Strobelberger M, Van Noord M, Thieda P, Thaler K, Gaynes B. Drug Class Review: Second‐Generation Antidepressants: Final Update 5. 5. Portland, OR: Oregon Health and Sciences University, March 2011. [PUBMED: 21595099]

Golden 2005

Golden RN, Gaynes BN, Ekstrom RD, Hamer RM, Jacobsen FM, Suppes T, Wisner KL, Nemeroff CB. The efficacy of light therapy in the treatment of mood disorders: a review and meta‐analysis of the evidence. American Journal of Psychiatry 2005;162(4):656‐662.

Guy 1970

Guy W, Bonato RR. Manual for the ECDEU Assessment Battery. Manual for the ECDEU Assessment Battery. 2nd Edition. Chevy Chase, MD: National Institute of Mental Health, 1970.

Hamilton 1980

Hamilton M. Rating depressive patients. J Clin Psychiatry Dec 1980;41(12):21‐4.

Hansen 2009

Hansen RA, Moore CG, Dusetzina SB, Leinwand BI, Gartlehner G, Gaynes B. Controlling for Drug Dose in Systematic Review and Meta‐Analysis: A Case Study of the Effect of Antidepressant Dose. Med Decis Making 2009;29(1):91‐103.

Hickie 2011

Hickie IB, Rogers NL. Novel melatonin‐based therapies: potential advances in the treatment of major depression. Lancet Aug 13;378(9791):621‐31.

Higgins 2009

Higgins JPT, Green S, editors. Cochrane Handbook for Systematic Reviews of Interventions 5.0.2 [updated September 2009]. The Cochrane Collaboration, 2009 Available from www.cochrane‐handbook.org. The Cochrane Collaboration.

Kennedy 2001

Kennedy SH, Lam RW, Cohen NL, Ravindran AV, CANMAT Depression Work Group. Clinical guidelines for the treatment of depressive disorders. IV. Medications and other biological treatments. Canadian Journal of Psychiatry. Revue Canadienne de Psychiatrie 2001;46(Suppl 1):38S‐58S.

Kent 2000

Justine M Kent. SNaRIs, NaSSAs, and NaRIs: new agents for the treatment of depression. The Lancet 11 March 2000;355(9207):911‐918.

Levitan 2007

Levitan RD. The chronobiology and neurobiology of winter seasonal affective disorder. Dialogues Clin neurosci 2007;9(3):315‐24.

Levitt 2000

Levitt AJ, Boyle MH, Joffe RT, Baumal Z. Estimated prevalence of the seasonal subtype of major depression in a Canadian community sample. Canadian Journal of Psychiatry. Revue Canadienne de Psychiatrie 2000;45(7):650‐4.

Levitt 2002

Levitt AJ, Boyle MH. The impact of latitude on the prevalence of seasonal depression. Canadian Journal of Psychiatry. Revue Canadienne de Psychiatrie 2002;47(4):361‐7.

Michalak 2002

Michalak EE, Hayes S, Wilkinson C, Hood K, Dowrick C. Treatment compliance in light therapy: Do patients do as they say they do?. Journal of Affective Disorders 2002;68(2‐3):341‐342.

Moncrieff 2004

Moncrieff J, Wessely S, Hardy R. Active placebos versus antidepressants for depression. Cochrane Database of Systematic Reviews 2004, Issue 1. [DOI: 10.1002/14651858.CD003012.pub2]

Nakagawa 2009

Nakagawa A, Watanabe N, Omori IM, Barbui C, Cipriani A, McGuire H, et al. Milnacipran versus other antidepressive agents for depression. Cochrane Database of Systematic Reviews 2009, Issue 3. [DOI: 10.1002/14651858.CD006529.pub2]

Neumeister 2001

Alexander Neumeister, Anastasios Konstantinidis, Nicole Praschak‐Rieder, Matthaeus Willeit, Eva Hilger, Juergen Stastny, Siegfried Kasper. Monoaminergic function in the pathogenesis of seasonal affective disorder. International Journal of Neuropsychopharmacology 2001;4:409‐420. [DOI: 10.1017/S1461145701002644]

Pjrek 2005

Pjrek E, Konstantinidis A, Assem‐Hilger E, Praschak‐Rieder N, Willeit M, Kasper S, Winkler D. et al. Therapeutic effects of escitalopram and reboxetine in seasonal affective disorder: a pooled analysis. Journal of Psychiatric Research 2009;43(8):792‐797.

Saeed 1998

S. Atezaz Saeed, Timothy J. Bruce. Seasonal Affective Disorders. American Family Physician March 15 1998;57(6):1340‐6.

Sohn 2005

Sohn CH, Lam RW. Update on the biology of seasonal affective disorder. CNS Spectrums 2005;10(8):635‐646.

Ware 1992

JE Ware, CD Sherbourne. The MOS 36‐item short‐form health survey (SF‐36). I. Conceptual framework and item selection. Med Care 1992 June;30(6):473‐83.

Williams 1988

Williams JB. A structured interview guide for the Hamilton Depression Rating Scale. Archives of general psychiatry Aug 1988;45(8):742‐7.

Characteristics of studies

Characteristics of included studies [ordered by study ID]

Lam 1995

Methods

Randomised controlled trial. One‐week placebo wash‐out phase with exclusion of responders, then randomisation and a five‐week treatment period.

Participants

N=68. Outpatients at five centres in Canada suffering recurrent major depressive episodes with a seasonal pattern (DSM‐IIIR). Enrollment over two years between 1991 and 1993. Average age approximately 39 years, 66% female.

Interventions

Fluoxetine 20 mg per day versus placebo.

Outcomes

Depression response (baseline versus end results and a greater than 50% improvement in baseline score) as per the 29‐item SIGH‐SAD, 21‐item HDRS, and the BDI.

Safety measures: weight, pulse, blood pressure and adverse effects.

Notes

Funded by Eli Lilly, Canada, Inc.

Risk of bias

Bias

Authors' judgement

Support for judgement

Random sequence generation (selection bias)

Unclear risk

Not clear what method of sequence generation was used: "eligible patients were randomly assigned to either fluoxetine, 20 mg daily, or an identical placebo capsule".

Allocation concealment (selection bias)

Unclear risk

This is not reported.

Incomplete outcome data (attrition bias)
All outcomes

Unclear risk

The number of participants who did not complete the trial is not reported, however, the authors state that they conduct analyses "using the intention‐to‐treat last‐observation‐carried‐forward method".

Selective reporting (reporting bias)

Unclear risk

Although no study protocol is available, the authors report all of the outcomes that are described in the methods section clearly and in detail.

Other bias

Low risk

None.

Blinding of participants and personnel (performance bias)
All outcomes

Unclear risk

This is unclear. The trial is described as being "double‐blind".

Blinding of outcome assessment (detection bias)
All outcomes

Unclear risk

This is unclear. The trial is described as being "double‐blind".

Lam 2006

Methods

Randomised controlled trial. One‐week washout of placebo responders with subsequent randomisation and an eight week treatment period.

Participants

N=96. Outpatients at four centres in Canada suffering recurrent major depressive episodes with a seasonal pattern (DSM‐IV SCID). Enrollment over three years between 2000 and 2003. Average age approximately 39 years, 66% female. Outpatients aged 18‐65 years, DSM‐IV criteria for major depressive episodes with a seasonal pattern.

Interventions

Light therapy: 10,000 Lux, 14 inches between screen and cornea for 30 minutes as soon as possible after waking (between 7:00am and 8:00am) with a placebo capsule versus fluoxetine 20 mg/day taken between 7:00am and 8:00am and placebo light box of 100 Lux.

Outcomes

Depression response and remission. Response is defined as an improvement of 50% or more on the 24‐item HAM‐D (consisting of the 17‐item HAM‐D scale, plus seven atypical symptoms). Remission is clinical response plus an end score of eight or less. Other outcome measures include the CGI and the BDI. Adverse effects were captured using a pre‐defined list of 32 adverse effects and both the severity and frequency of treatment‐emergent adverse effects was captured.

Notes

This is the CAN‐SAD study, from which multiple publications have been produced, including Michalak 2007 on quality of life outcomes.

This study was funded by a grant (CT62962) from the Canadian Institutes of Health Research (CIHR) and a CIHR/Wyeth Postdoctoral Fellowship Award to Dr Michalak. Light boxes were supplied by Uplift Technologies.

Risk of bias

Bias

Authors' judgement

Support for judgement

Random sequence generation (selection bias)

Low risk

Allocation concealment (selection bias)

Low risk

Incomplete outcome data (attrition bias)
All outcomes

Low risk

Other bias

Low risk

Blinding of participants and personnel (performance bias)
All outcomes

Low risk

Blinding of outcome assessment (detection bias)
All outcomes

Low risk

Pjrek 2007

Methods

Open‐label observational study (drug surveillance)

Participants

Twenty participants with SAD (DSM‐IV‐TR criteria) with a score of 20 or higher on the Structured Interview Guide for the Hamilton Depression Rating Scale, SAD version (SIGH‐SAD, 29 items). Fourteen females and 6 males, average age 41 years. Recruited at the Medical University of Vienna, Austria.

Interventions

Open‐label escitalopram, flexible dose 10 to 20 mg per day for eight weeks.

Outcomes

The only outcome of interest for the purposes of this review is adverse effects (this study did not fulfil our inclusion criteria for efficacy as it is not a randomised trial). Adverse effects were monitored at week one, week two, week four, week six and week eight using the Udvalg for Kliniske Undersogelser (UKU) Side Effect Rating Scale.

Notes

Only the data for adverse effects are reported in this review.

This study was supported by an unrestricted grant from H. Lundbeck A / S.

Risk of bias

Bias

Authors' judgement

Support for judgement

Random sequence generation (selection bias)

High risk

This is an observational study with only one group.

Allocation concealment (selection bias)

High risk

This is an open‐label study.

Incomplete outcome data (attrition bias)
All outcomes

Low risk

Two participants out of 20 withdrew from the study at week six (10%). This level af attrition is unlikely to result in a high risk of bias for the adverse effects results of this study.

Other bias

High risk

Blinding of participants and personnel (performance bias)
All outcomes

High risk

Blinding of outcome assessment (detection bias)
All outcomes

High risk

Pjrek 2008

Methods

Open‐label observational study (drug surveillance).

Participants

Twenty‐six participants with SAD (DSM‐IV‐TR criteria). Twenty‐two females and four males, average age 41 years. Recruited at the Medical University of Vienna, Austria.

Interventions

Open‐label duloxetine, flexible dose 60 to 120 mg per day for eight weeks.

Outcomes

The only outcome of interest for the purposes of this review is adverse effects (this study did not fulfil our inclusion criteria for efficacy as it is not a randomised trial). Adverse effects were monitored at week one, week two, week four, week six and week eight using the Udvalg for Kliniske Undersogelser (UKU) Side Effect Rating Scale.

Notes

Only the data for adverse effects are reported in this review.

Dr Kasper has received research grants, consultancy fees and lecture fees from a number of pharmaceutical companies in the area of CNS development. Dr Konstantinidis and Dr Winkler have received lecture fees from several pharmaceutical companies in the field. The authors of this study have been supported by various travel grants.

Risk of bias

Bias

Authors' judgement

Support for judgement

Random sequence generation (selection bias)

High risk

This is an observational study with only one group.

Allocation concealment (selection bias)

High risk

This is an open‐label study.

Incomplete outcome data (attrition bias)
All outcomes

High risk

Six participants out of 26 withdrew from the study (23%). This level af attrition is likely to result in a high risk of bias for the adverse effects results of this study.

Selective reporting (reporting bias)

Unclear risk

No protocol available.

Other bias

High risk

Additional risk of bias assessment as per Deeks 2003, see Table 2. Authors do not report how allocation to duloxetine occurred. Participants were enrolled and data collected prospectively. Inclusion and exclusion criteria are clearly described. This study contains a small number of participants and this is a likely source of bias. Both intervention and outcomes are clearly specified. Interpretation of the results is accurate.

Blinding of participants and personnel (performance bias)
All outcomes

High risk

This is an open‐label study.

Blinding of outcome assessment (detection bias)
All outcomes

High risk

This is an open‐label study.

Pjrek 2009

Methods

Open‐label observational study (drug surveillance). Pooled results of escitalopram (from Pjrek 2007) and reboxetine. We present the data here for the reboxetine group.

Participants

Fifteen participants with SAD (DSM‐IV‐TR criteria). Thirteen females and two males, average age 42 years. Recruited at the Medical University of Vienna, Austria.

Interventions

Open‐label reboxetine, 8 mg per day for six weeks.

Outcomes

The only outcome of interest for the purposes of this review is adverse effects (this study did not fulfil our inclusion criteria for efficacy as it is not a randomised trial). Adverse effects were monitored at week one, week two, week four, and week six using the Udvalg for Kliniske Undersogelser (UKU) Side Effect Rating Scale.

Notes

Only the data for adverse effects are reported in this review. The authors report no funding source for this study, although authors have received multiple grants and research support as well as consultancy and advisory board payments.

Risk of bias

Bias

Authors' judgement

Support for judgement

Random sequence generation (selection bias)

High risk

Allocation concealment (selection bias)

High risk

Incomplete outcome data (attrition bias)
All outcomes

High risk

Other bias

High risk

Blinding of participants and personnel (performance bias)
All outcomes

High risk

Blinding of outcome assessment (detection bias)
All outcomes

High risk

Ruhrmann 1998

Methods

Randomised controlled trial. One week of placebo followed by five weeks of treatment.

Participants

N=40. Participants with major depression with a seasonal pattern (DSM‐III‐R). Average age 41 years and approximately 79% females. Recruited in Germany and Austria.

Interventions

Fluoxetine 20 mg per day with dim light versus light therapy 3000 Lux, 2 hours per day (2 hours in the morning, 1 hour each in the morning and evening, or 2 hours in the evening) at a distance of 55 cm and a placebo capsule.

Outcomes

21‐item HDRS (item 17 omitted) and the seven‐item supplement (SUPP). Other outcome measures included the Hypomania scale, the Profile of Mood States scale, and the Adjective Mood Scale of von Zerssen.

Notes

This study was supported by a grant from Eli Lilly, Germany.

Risk of bias

Bias

Authors' judgement

Support for judgement

Random sequence generation (selection bias)

Unclear risk

"patients were randomly assigned".

Allocation concealment (selection bias)

Unclear risk

Not reported.

Incomplete outcome data (attrition bias)
All outcomes

High risk

Overall 12% attrition, unequal between groups: 20% in the bright light group and 5% in the fluoxetine group.

Selective reporting (reporting bias)

Unclear risk

No protocol is available. All outcomes described in the methods section are reported in the results.

Other bias

Low risk

None

Blinding of participants and personnel (performance bias)
All outcomes

Low risk

"rater and patients blind to treatment conditions" and "treatment conditions were unknown to the patients".

Blinding of outcome assessment (detection bias)
All outcomes

Low risk

"rater and patients blind to treatment conditions" and "all objective observer rating were done by one rater blind to study design and treatment conditions".

Characteristics of excluded studies [ordered by study ID]

Study

Reason for exclusion

Blashko 1995

This is a randomised trials of 204 participants conducted in 29 centres in Austria, Canada, Finland, France and the UK. Particpants with a seasonal pattern of major depression or bipolar disorder were randomised to sertraline or placebo. We excluded this study because the population did not meet our inclusion criteria.

GlaxoSmithKline 2003

This is an eight‐week trial of participants with a history of SAD, but who were non‐depressed (score seven or less on the HAMD‐17) at the beginning of the study. Participants were randomised to bupropion XL or placebo for the prevention of SAD, therefore this trial did not meet our inclusion criteria.

GlaxoSmithKline 2003a

This is an eight‐week trial of participants with a history of SAD, but who were non‐depressed (score seven or less on the HAMD‐17) at the beginning of the study. Participants were randomised to bupropion XL or placebo for the prevention of SAD, therefore this trial did not meet our inclusion criteria.

GlaxoSmithKline 2004

This is an eight‐week trial of participants with a history of SAD, but who were non‐depressed (score seven or less on the HAMD‐17) at the beginning of the study. Participants were randomised to bupropion XL or placebo for the prevention of SAD, therefore this trial did not meet our inclusion criteria.

Moscovitch 2004

We excluded this trial because the population did not meet our inclusion criteria. The trial included 187 participants with a DSM‐III‐R diagnosis of major depression or bipolar disorder with a seasonal pattern.

Partonen 1996

This is a six‐week study of 183 participants with major depression randomised to 20 to 40 mg/day of fluoxetine or 300 to 450 mg/day of moclobemide. Results were presented separately for the 34 SAD participants in the trial. We excluded this study because the comparator, moclobemide, did not meet our inclusion criteria.

Data and analyses

Open in table viewer
Comparison 1. Fluoxetine versus Placebo

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 Response (> 50% improvement on 29‐item HAM‐D SIGH‐SAD) Show forest plot

1

Risk Ratio (M‐H, Fixed, 95% CI)

Totals not selected

Analysis 1.1

Comparison 1 Fluoxetine versus Placebo, Outcome 1 Response (> 50% improvement on 29‐item HAM‐D SIGH‐SAD).

Comparison 1 Fluoxetine versus Placebo, Outcome 1 Response (> 50% improvement on 29‐item HAM‐D SIGH‐SAD).

2 Harm: Overall adverse effects Show forest plot

1

Risk Ratio (M‐H, Fixed, 95% CI)

Totals not selected

Analysis 1.2

Comparison 1 Fluoxetine versus Placebo, Outcome 2 Harm: Overall adverse effects.

Comparison 1 Fluoxetine versus Placebo, Outcome 2 Harm: Overall adverse effects.

Open in table viewer
Comparison 2. Fluoxetine versus Light Therapy

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 Response (> 50% improvement on 24‐item HAM‐D SIGH‐SAD) Show forest plot

2

136

Risk Ratio (M‐H, Fixed, 95% CI)

0.98 [0.77, 1.24]

Analysis 2.1

Comparison 2 Fluoxetine versus Light Therapy, Outcome 1 Response (> 50% improvement on 24‐item HAM‐D SIGH‐SAD).

Comparison 2 Fluoxetine versus Light Therapy, Outcome 1 Response (> 50% improvement on 24‐item HAM‐D SIGH‐SAD).

2 Remission (response plus end score eight or less) Show forest plot

2

136

Risk Ratio (M‐H, Fixed, 95% CI)

0.91 [0.64, 1.30]

Analysis 2.2

Comparison 2 Fluoxetine versus Light Therapy, Outcome 2 Remission (response plus end score eight or less).

Comparison 2 Fluoxetine versus Light Therapy, Outcome 2 Remission (response plus end score eight or less).

3 Harm: At least one treatment‐emergent adverse effect Show forest plot

1

Risk Ratio (M‐H, Fixed, 95% CI)

Totals not selected

Analysis 2.3

Comparison 2 Fluoxetine versus Light Therapy, Outcome 3 Harm: At least one treatment‐emergent adverse effect.

Comparison 2 Fluoxetine versus Light Therapy, Outcome 3 Harm: At least one treatment‐emergent adverse effect.

4 Harm: Agitation Show forest plot

1

Risk Ratio (M‐H, Fixed, 95% CI)

Totals not selected

Analysis 2.4

Comparison 2 Fluoxetine versus Light Therapy, Outcome 4 Harm: Agitation.

Comparison 2 Fluoxetine versus Light Therapy, Outcome 4 Harm: Agitation.

5 Harm: Sleep disturbance Show forest plot

1

Odds Ratio (M‐H, Fixed, 95% CI)

Totals not selected

Analysis 2.5

Comparison 2 Fluoxetine versus Light Therapy, Outcome 5 Harm: Sleep disturbance.

Comparison 2 Fluoxetine versus Light Therapy, Outcome 5 Harm: Sleep disturbance.

6 Harm: Palpitations Show forest plot

1

Risk Ratio (M‐H, Fixed, 95% CI)

Totals not selected

Analysis 2.6

Comparison 2 Fluoxetine versus Light Therapy, Outcome 6 Harm: Palpitations.

Comparison 2 Fluoxetine versus Light Therapy, Outcome 6 Harm: Palpitations.

Study flow diagram for efficacy.
Figuras y tablas -
Figure 1

Study flow diagram for efficacy.

Study flow diagram for adverse effects.
Figuras y tablas -
Figure 2

Study flow diagram for adverse effects.

Risk of bias graph: review authors' judgements about each risk of bias item presented as percentages across all included studies.
Figuras y tablas -
Figure 3

Risk of bias graph: review authors' judgements about each risk of bias item presented as percentages across all included studies.

Risk of bias summary: review authors' judgements about each risk of bias item for each included study.
Figuras y tablas -
Figure 4

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

Forest plot of comparison: Fluoxetine versus Light Therapy, outcome: 1.1 Response (> 50% improvement on 24‐item HAM‐D SIGH‐SAD).
Figuras y tablas -
Figure 5

Forest plot of comparison: Fluoxetine versus Light Therapy, outcome: 1.1 Response (> 50% improvement on 24‐item HAM‐D SIGH‐SAD).

Forest plot of comparison: Fluoxetine versus Light Therapy, outcome: 1.2 Remission (response plus end score eight or less).
Figuras y tablas -
Figure 6

Forest plot of comparison: Fluoxetine versus Light Therapy, outcome: 1.2 Remission (response plus end score eight or less).

Comparison 1 Fluoxetine versus Placebo, Outcome 1 Response (> 50% improvement on 29‐item HAM‐D SIGH‐SAD).
Figuras y tablas -
Analysis 1.1

Comparison 1 Fluoxetine versus Placebo, Outcome 1 Response (> 50% improvement on 29‐item HAM‐D SIGH‐SAD).

Comparison 1 Fluoxetine versus Placebo, Outcome 2 Harm: Overall adverse effects.
Figuras y tablas -
Analysis 1.2

Comparison 1 Fluoxetine versus Placebo, Outcome 2 Harm: Overall adverse effects.

Comparison 2 Fluoxetine versus Light Therapy, Outcome 1 Response (> 50% improvement on 24‐item HAM‐D SIGH‐SAD).
Figuras y tablas -
Analysis 2.1

Comparison 2 Fluoxetine versus Light Therapy, Outcome 1 Response (> 50% improvement on 24‐item HAM‐D SIGH‐SAD).

Comparison 2 Fluoxetine versus Light Therapy, Outcome 2 Remission (response plus end score eight or less).
Figuras y tablas -
Analysis 2.2

Comparison 2 Fluoxetine versus Light Therapy, Outcome 2 Remission (response plus end score eight or less).

Comparison 2 Fluoxetine versus Light Therapy, Outcome 3 Harm: At least one treatment‐emergent adverse effect.
Figuras y tablas -
Analysis 2.3

Comparison 2 Fluoxetine versus Light Therapy, Outcome 3 Harm: At least one treatment‐emergent adverse effect.

Comparison 2 Fluoxetine versus Light Therapy, Outcome 4 Harm: Agitation.
Figuras y tablas -
Analysis 2.4

Comparison 2 Fluoxetine versus Light Therapy, Outcome 4 Harm: Agitation.

Comparison 2 Fluoxetine versus Light Therapy, Outcome 5 Harm: Sleep disturbance.
Figuras y tablas -
Analysis 2.5

Comparison 2 Fluoxetine versus Light Therapy, Outcome 5 Harm: Sleep disturbance.

Comparison 2 Fluoxetine versus Light Therapy, Outcome 6 Harm: Palpitations.
Figuras y tablas -
Analysis 2.6

Comparison 2 Fluoxetine versus Light Therapy, Outcome 6 Harm: Palpitations.

Fluoxetine compared with placebo for seasonal affective disorder

Patient or population: Adults with seasonal affective disorder

Settings: Outpatients

Intervention: Fluoxetine

Comparison: Placebo

Outcomes

Illustrative comparative risks* (95% CI)

Relative effect
(95% CI)

No of Participants
(studies)

Quality of the evidence
(GRADE)

Comments

Assumed risk

Corresponding risk

placebo

fluoxetine

Response (> 50% improvement on 29‐item HAM‐D SIGH‐SAD)

Five weeks

Medium risk population

RR 1.62 (0.92 to 2.83)

68
(1)

⊕⊝⊝⊝
very low1

34 per 100

56 per 100
(32 to 97)

Remission

NR

NR

NA

NA

NA

Quality of life

NR

NR

NA

NA

NA

Overall adverse effects

Five weeks

Medium risk population

RR 1.07 (0.95 to 1.21)

68
(1)

⊕⊝⊝⊝
very low1

91 per 100

97 per 100
(86 to 110)

*The basis for the assumed risk (e.g. the median control group risk across studies) is the rate in the placebo group. The corresponding risk (and its 95% CI) is based on the assumed risk in the fluoxetine group and the relative effect of the intervention (and its 95% CI).

CI: Confidence interval; HAM‐D SIGH‐SAD: Hamilton depression scale, seasonal affective disorder sub scale; NA: not applicable; NR: not reported; RR: Risk Ratio

GRADE Working Group grades of evidence
High quality: Further research is very unlikely to change our confidence in the estimate of effect.
Moderate quality: Further research is likely to have an important impact on our confidence in the estimate of effect and may change the estimate.
Low quality: Further research is very likely to have an important impact on our confidence in the estimate of effect and is likely to change the estimate.
Very low quality: We are very uncertain about the estimate.

1The trial has an unclear risk of bias. The effect is very imprecise because there are few participants in the trials.

Figuras y tablas -

Fluoxetine compared with light therapy for seasonal affective disorder

Patient or population: Adults with seasonal affective disorder

Settings: Outpatients

Intervention: Fluoxetine

Comparison: Light therapy

Outcomes

Illustrative comparative risks* (95% CI)

Relative effect
(95% CI)

No of Participants
(studies)

Quality of the evidence
(GRADE)

Comments

Assumed risk

Corresponding risk

Light therapy

Fluoxetine

Response (> 50% improvement on 24‐item HAM‐D SIGH‐SAD)

Five to eight weeks

Medium risk population

RR 0.98 (0.77 to 1.24)

146
(2)

⊕⊕⊝⊝
low1

68 per 100

67 per 100
(52 to 87)

Remission (response plus end score eight or less)

Five to eight weeks

Medium risk population

RR 0.81 (0.39 to 1.71)

146
(2)

⊕⊝⊝⊝
very low2

68 per 100

55 per 100
(22 to 94)

Quality of life (SF‐20 & Q‐LES‐Q)

Eight weeks

NR

NR

No significant differences

96

(1)

NA

No relative effect was calculated

Adverse effects (at least one treatment‐emergent adverse effect)

Eight weeks

Medium risk population

RR 0.97 (0.78 to 1.22)

96

(1)

⊕⊝⊝⊝
very low3

77 per 100

75 per 100
(60 to 94)

*The basis for the assumed risk (e.g. the median control group risk across studies) is the response rate in the light therapy groups in the two included trials. The corresponding risk (and its 95% CI) is based on the assumed risk in the fluoxetine group and the relative effect of the intervention (and its 95% CI).

CI: Confidence interval; HAM‐D SIGH‐SAD: Hamilton depression scale, seasonal affective disorder sub scale; NA: not applicable; NR: not reported; Q‐LES‐Q: Quality of life enjoyment and satisfaction questionnaire; RR: Risk Ratio; SF‐20: medical outcome study

GRADE Working Group grades of evidence
High quality: Further research is very unlikely to change our confidence in the estimate of effect.
Moderate quality: Further research is likely to have an important impact on our confidence in the estimate of effect and may change the estimate.
Low quality: Further research is very likely to have an important impact on our confidence in the estimate of effect and is likely to change the estimate.
Very low quality: We are very uncertain about the estimate.

1The trials provide direct evidence for average patients with SAD and use recommended doses of fluoxetine (directness). There was no inconsistency. The risk of bias in the two trials was low to moderate. Finally, the calculated effect is imprecise because there are few participants in the trials.

2The trials provide direct evidence for average patients with SAD and use recommended doses of fluoxetine (directness). There was serious inconsistency. The risk of bias in the two trials was low to moderate. Finally, the calculated effect is imprecise because there are few participants in the trials.

3The data are from only one trial with a low risk of bias, however, the outcome encompasses many adverse effects and therefore the data are indirect. Furthermore, the effect is imprecise because there are few participants in the trial.

Figuras y tablas -
Table 1. Risk of bias table (non‐randomised study), Pjrek 2007

Domain

Authors' judgement

Support for judgement

How allocation occured? Concealment of allocation?

High risk

All patients received active therapy with escitalopram. No concealment of allocation

Blinding? (Participants)

High risk

Open‐label

Follow‐up equal and complete?

Low risk

10% attrition

Baseline comparability of groups?

Unclear

Only one group

ITT‐analysis

Low risk

ITT analysis employed

Intervention clearly specified?

Low risk

Intervention clearly described

Outcomes clearly specified?

Low risk

Outcomes clearly specified including prospective adverse events recording with Udvalg for Kliniske Undersogelser
(UKU) Side Effect Rating Scale

Interpretation based on results?

Low risk

Yes

Figuras y tablas -
Table 1. Risk of bias table (non‐randomised study), Pjrek 2007
Table 2. Risk of bias table (non‐randomised study), Pjrek 2008

Domain

Authors' judgement

Support for judgement

How allocation occured? Concealment of allocation?

High risk

All patients received active therapy with duloxetine. No concealment of allocation

Blinding? (Participants)

High risk

Open‐label

Follow‐up equal and complete?

High risk

23% attrition

Baseline comparability of groups?

Unclear

Only one group

ITT‐analysis

HIgh risk

LOCF analysis employed

Intervention clearly specified?

Low risk

Intervention clearly described

Outcomes clearly specified?

Low risk

Outcomes clearly specified including prospective adverse events recording with Udvalg for Kliniske Undersogelser
(UKU) Side Effect Rating Scale

Interpretation based on results?

High risk

No, due to high attrition and use of LOCF approach for missing data

Figuras y tablas -
Table 2. Risk of bias table (non‐randomised study), Pjrek 2008
Table 3. Risk of bias table (non‐randomised study), Pjrek 2009

Domain

Authors' judgement

Support for judgement

How allocation occured? Concealment of allocation?

High risk

All patients received active therapy with reboxetine. No concealment of allocation

Blinding? (Participants)

High risk

Open‐label

Follow‐up equal and complete?

High risk

27% attrition

Baseline comparability of groups?

Unclear

Only one group

ITT‐analysis

HIgh risk

LOCF analysis employed

Intervention clearly specified?

Low risk

Intervention clearly described

Outcomes clearly specified?

Low risk

Outcomes clearly specified including prospective adverse events recording with Udvalg for Kliniske Undersogelser
(UKU) Side Effect Rating Scale

Interpretation based on results?

High risk

No, due to high attrition and use of LOCF approach for missing data

Figuras y tablas -
Table 3. Risk of bias table (non‐randomised study), Pjrek 2009
Table 4. Adverse effects

Study ID

Lam 2006

Lam 1995

Prjek 2007

Pjrek 2008

Pjrek 2009

Study design

RCT

RCT

Open‐label observational study

Open‐label observational study

Open‐label observational study

SGA

Fluoxetine

Light therapy

Fluoxetine

Placebo

Escitalopram

Duloxetine

Reboxetine

Number of participants (N)

N=48

N= 48

N=36

N=32

N = 20

N=26

N= 15

Overall AEs (%)

75

77

97

91

55

 

100

Withdrawal due to AEs (%)

25

23

6

3

15.4

26.6

Gastrointestinal

 

 

 

 

 

Abdominal Pain (%)

8.3

6.3

 

 

 

Nausea (%)

10.4

4.2

40

53.8

20

Vomiting (%)

 

 

 

 

 

Diarrhoea (%)

10.4

4.2

5

23.1

0.0

Constipation (%)

6.3

8.3

5

11.5

26.7

Decreased appetite (%)

14.6

14.6

5

 

6.7

Increased appetite (%)

14.6

8.3

 

3.8

 

Weight loss (%)

6.3

2.1

 

3.8

 

Dyspepsia (%)

 

 

 

 

 

Central nervous system

 

 

 

 

 

Anxiety (%)

25.0

12.5

 

 

 

Nervousness (%)

10.4

12.5

 

 

 

Agitation (%)

12.5

0

 

 

 

Dizziness (%)

 

 

5

 

0.0

Tremor (%)

6.3

2.1

 

3.8

33.3

Irritability (%)

8.3

4.2

 

 

 

Sleepiness (%)

12.5

8.3

 

3.8

26.7

Increased sleep (%)

18.8

12.5

 

 

6.7

Decreased sleep (%)

20.8

22.9

 

 

 

Sleep disturbance (%)

29.2

2.1

 

7.7

 

Headache (%)

10.4

16.7

5

7.7

13.3

Paraesthesia (%)

 

 

 

 

20.0

Sexual Dysfunction

 

 

 

 

 

Decreased sex drive (%)

16.7

14.6

20

 

0

Male erection problems (%)

6.3

4.7

 

 

 

Female delayed orgasm (%)

6.3

0

 

 

 

Ejaculation* (%)

 

 

 

 

 

Other

 

 

 

 

 

Feeling faint (%)

0

6.3

 

 

 

Palpitations (%)

10.4

0

 

3.8

60.0

Sweating (%)

10.4

6.3

 

11.5

73.3

Flushing (%)

4.2

6.3

 

 

 

Muscle pain (%)

12.5

12.5

 

 

 

Weakness/fatigue (%)

16.7

16.5

 

 

 

Rash (%)

6.3

0

 

 

 

Dry mouth (%)

14.6

18.8

 

11.5

86.7

Hypersalivation (%)

 

 

 

 

6.7

Dry eyes (%)

 

 

 

 

6.7

Urinary retention (%)

 

 

 

 

6.7

Concentration problems (%)

 

 

 

3.8

 

Dilated pupils (%)

 

 

 

3.8

 

Emotional Indifference (%)

 

 

 

3.8

 

Photosensitivity (%)

 

 

 

3.8

 

Vivid dreams (%)

 

 

 

3.8

 

Psychomotor agitation (%)

 

 

 

 

73.3

Orthostatic dysregulation (%)

 

 

 

 

60.0

Accomodative dysfunction (%)

 

 

 

 

26.7

Figuras y tablas -
Table 4. Adverse effects
Comparison 1. Fluoxetine versus Placebo

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 Response (> 50% improvement on 29‐item HAM‐D SIGH‐SAD) Show forest plot

1

Risk Ratio (M‐H, Fixed, 95% CI)

Totals not selected

2 Harm: Overall adverse effects Show forest plot

1

Risk Ratio (M‐H, Fixed, 95% CI)

Totals not selected

Figuras y tablas -
Comparison 1. Fluoxetine versus Placebo
Comparison 2. Fluoxetine versus Light Therapy

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 Response (> 50% improvement on 24‐item HAM‐D SIGH‐SAD) Show forest plot

2

136

Risk Ratio (M‐H, Fixed, 95% CI)

0.98 [0.77, 1.24]

2 Remission (response plus end score eight or less) Show forest plot

2

136

Risk Ratio (M‐H, Fixed, 95% CI)

0.91 [0.64, 1.30]

3 Harm: At least one treatment‐emergent adverse effect Show forest plot

1

Risk Ratio (M‐H, Fixed, 95% CI)

Totals not selected

4 Harm: Agitation Show forest plot

1

Risk Ratio (M‐H, Fixed, 95% CI)

Totals not selected

5 Harm: Sleep disturbance Show forest plot

1

Odds Ratio (M‐H, Fixed, 95% CI)

Totals not selected

6 Harm: Palpitations Show forest plot

1

Risk Ratio (M‐H, Fixed, 95% CI)

Totals not selected

Figuras y tablas -
Comparison 2. Fluoxetine versus Light Therapy