≥50% decrease on the Hamilton Depression Rating Scale at 6 weeks comparing hypericum extract with imipramine in mild to moderate depression†
| Hypericum | Imipramine | RBI (95% CI) | NNT (CI) |
|---|---|---|---|
| †Abbreviations defined in glossary; RBI, NNT, and CI calculated from data in article. | |||
| 43% | 40% | 8% (−4% to 17%) | Not significant |