Risperidone v haloperidol in outpatient schizophrenia and schizoaffective disorder‡

Outcome over 2.2 yearsRisperidoneHaloperidolRRR (95% CI)NNT (CI)
‡Abbreviations defined in glossary; RRR, NNT, and CI calculated from Cox proportional hazards data in article.
Risk of relapse34%60%48% (25 to 64)4 (3 to 7)