Cognitive behavioural therapy (CBT) v befriending in drug refractory schizophrenia*
| Outcomes at 9 months | CBT | Befriending | RBI (95% CI) | NNT (CI) |
|---|---|---|---|---|
| *CPRS=Comprehensive Psychiatric Rating Scale. Other abbreviations defined in glossary; RBI, NNT, and CI calculated from data in article. | ||||
| ≥50% improvement in CPRS total scores | 63% | 39% | 63% (8 to 157) | 5 (3 to 28) |
| ≥50% improvement in CPRS schizophrenia change scores | 70% | 50% | 39% (−1 to 102) | Not significant |