Ref (type)	Population	Outcome, Interventions	Results and statistical analysis	Effect size	Favours
Adverse effects
Systematic review	358 people Data from 1 RCT	Proportion of people withdrawing from RCT 12 weeks 54/179 (32%) with venlafaxine 65/179 (36%) with placebo	RR 0.83 95% CI 0.62 to 1.12		Not significant