Predischarge coronary angiography (CA) v exercise treadmill testing (ETT) for low-risk chest pain‡
| Outcomes at 1 year | CA | ETT | RRR (95% CI) | NNT (CI) |
|---|---|---|---|---|
| ‡Abbreviations defined in glossary; RRR, NNT, and CI calculated from data in article. | ||||
| Return ED visit for chest pain | 10% | 30% | 66% (36 to 82) | 6 (4 to 11) |
| Admission for chest pain | 3% | 16% | 81% (43 to 94) | 8 (5 to 18) |