Ref (type)	Population	Outcome, Interventions	Results and statistical analysis	Effect size	Favours
Symptom severity
Systematic review	372 people 2 RCTs in this analysis	Mean difference in Positive and Negative Syndrome Scale (PANSS) positive subscore short term with risperidone (6 mg/day) with aripiprazole (15–30 mg/day) Absolute results not reported	Mean difference +1.24 95% CI –0.26 to +2.74		Not significant
Systematic review	372 people 2 RCTs in this analysis	Mean difference in PANSS negative subscore short term with risperidone (6 mg/day) with aripiprazole (15–30 mg/day) Absolute results not reported	Mean difference –0.45 95% CI –1.78 to +0.87		Not significant