Percutaneous coronary angioplasty (PTCA) v medical care for non acute coronary artery disease*
| Weighted event rates | ||||
|---|---|---|---|---|
| Outcomes at 6 to 57 months | PTCA | Medical care | RRR (95% CI) | NNT (CI) |
| Angina at the end of study | 53% | 70% | 30% (2 to 50) | 6 (3 to 637) |
| RRI (CI) | NNH (CI) | |||
|---|---|---|---|---|
| *Abbreviations defined in glossary; NNT, NNH, and their CIs calculated from data in article. | ||||
| Coronary artery bypass grafting | 7.6% | 4.1% | 59% (9 to 132) | 29 (19 to 66) |