Treatment response for lithium augmentation v placebo for refractory depression (treatment up to 42d)†
| Weighted event rates‡ | RBI (95% CI) | NNT (CI) | |||||
|---|---|---|---|---|---|---|---|
| †Abbreviations defined in glossary. Treatment duration was 4 to 6 weeks.‡Event rates calculated from data in article and data supplied by author. | |||||||
| Studies | Lithium | Placebo | 3 studies with sufficient dose and duration of lithium | 50% | 23% | 114% (23 to 270) | 4 (3 to 11) |
| All 9 studies | 46% | 17% | 125% (45 to 251) | 4 (3 to 6) | |||