Performance of the Ottawa Chest Pain Cardiac Monitoring Rule predictors
| Predictor | Outcome occurred, % n = 15 | Outcome did not occur, % n = 781 | RR (95% CI) |
|---|---|---|---|
| Patient is free of chest pain | 5 (33) | 423 (54) | 0.43 (0.15–1.25) |
| ECG normal or nonspecific | 0 (0) | 523 (67) | 0.02 (0.00–0.28) |
Note: CI = confidence interval, RR = relative risk.