Medical therapy (calcium channel blockers or α blockers) v no medical therapy for urolithiasis at 15–48 days*
| Outcome | Number of trials (n) | Weighted event rates | Weighted RBI (95% CI) | NNT (CI) | |
|---|---|---|---|---|---|
| Medical therapy | No medical therapy | ||||
| *Abbreviations defined in glossary. | |||||
| †Weighted event rate and CI for NNT calculated from data in article. A fixed effects model was used. | |||||
| Urinary stone passage | 9 (693) | 78%† | 47% | 65% (45 to 88) | 4 (3 to 4) |