. Metoprolol (Met) v placebo for acute myocardial infarction at up to 28 days*
| Outcomes | Met | Placebo | RRR (95% CI) | NNT (CI) |
|---|---|---|---|---|
| Composite end point† | 9.4% | 9.9% | 3.6% (−0.9 to 9.1) | Not significant |
| Death | 7.7% | 7.8% | 0.9% (−4.6 to 7.4) | Not significant |
| Reinfarction | 2.0% | 2.5% | 18% (7.8 to 28) | 229 (147 to 517) |
| Ventricular fibrillation | 2.5% | 3.0% | 17% (6.8 to 24) | 199 (135 to 483) |
| RRI (CI) | NNH (CI) | |||
|---|---|---|---|---|
| *Abbreviations defined in glossary; RRR, RRI, NNT, NNH, and CI calculated from data in article. | ||||
| †Death, reinfarction, or cardiac arrest. | ||||
| Other cardiac arrest | 3.0% | 2.8% | 7.8% (−2.9 to 20) | Not significant |
| Cardiogenic shock | 5.0% | 3.9% | 29% (18 to 39) | 91 (67 to 143) |
| Composite end point† or shock | 10.9% | 10.8% | 1.8% (−3.6 to 7.1) | Not significant |