Ref (type)	Population	Outcome, Interventions	Results and statistical analysis	Effect size	Favours
Symptom severity
Systematic review	32 people Data from 1 RCT	Mental state: no discernible effect 4 months 0/16 (0%) with depot haloperidol 13/16 (81%) with placebo	OR 0.04 95% CI 0.01 to 0.15 P <0.00001	Large effect size	depot haloperidol