Kasper 1999.

Methods	Design: RCT parallel group, Blindness: double Duration of study: 12 wks
Participants	Single or multicentre: Multicentre Diagnostic criteria: DSM IV Co‐morbidity allowed: Secondary depression mild Setting: not described Age: 18‐65 years Other characteristics: Men and women
Interventions	No. of arms: four (citalopram 20mg vs 40mg vs 60mg vs placebo)
Outcomes	Primary: Change in YBOCS total score Proportion of responders (defined as 25% reduction in YBOCS)
Notes	12
Risk of bias
Bias	Authors' judgement	Support for judgement
Allocation concealment?	Unclear risk	B ‐ Unclear