Ref (type)	Population	Outcome, Interventions	Results and statistical analysis	Effect size	Favours
Adverse effects
Systematic review	40 people Data from 1 RCT	Proportion of people withdrawing from RCT 1/20 (5%) with adjunctive risperidone 2/20 (10%) with placebo	RR 0.50 95% CI 0.05 to 5.08		Not significant
RCT	65 men with PTSD after military service	Proportion of people withdrawing from RCT 11/22 (50%) with adjunctive risperidone 3 mg daily for 4 months 6/25 (24%) with placebo	P >0.18		Not significant