Relapse rates for nortriptyline plus lithium v nortriptyline alone v placebo for depressed patients who responded to electroconvulsive therapy‡
| Comparisons at 24 weeks | Event rates | RRR (95% CI) | NNT (CI) |
|---|---|---|---|
| ‡Abbreviations defined in glossary; RRR, NNT, and CI calculated from data in article. | |||
| Nortriptyline v placebo | 60% v 84% | 29% (−1 to 53) | Not significant |
| Nortriptyline + lithium v placebo | 39% v 84% | 53% (25 to 74) | 3 (2 to 6) |
| Nortriptyline + lithium v nortriptyline alone | 39% v 60% | 35% (−16 to 65) | Not significant |
