Clonidine v placebo for smoking cessation at ⩾12 months*
| Weighted event rates | |||||
|---|---|---|---|---|---|
| Number of trials | Number of patients | Clonidine | Placebo | RBI (95% CI) | NNT (CI) |
| *Abbreviations defined in glossary; weighted event rates, RBI, NNT, and CI calculated from data in article using a fixed effects model. | |||||
| 6 | 776 | 23% | 14% | 63% (22 to 118) | 12 (7 to 25) |