Ref (type)	Population	Outcome, Interventions	Results and statistical analysis	Effect size	Favours
PTSD symptoms
Systematic review	358 people Data from 1 RCT	Severity of clinician-rated PTSD symptoms 12 weeks with venlafaxine with placebo Absolute results not reported	SMD –0.14 95% CI –0.35 to +0.06		Not significant