Performance characteristics of the HEART Pathway vs EDACS for 30-day MACE
| Risk stratification strategy | 30-day MACE | Total (n) | |
| Yes (n, %*) | No (n, %*) | ||
| EDACS non-low risk | 423 (23.0%) | 1420 (77.0%) | 1843 |
| EDACS low risk | 26 (1.0%) | 2530 (99.0%) | 2556 |
| Total (n) | 449 | 3950 | 4399 |
| HEART non-low risk | 442 (16.3%) | 2266 (83.7%) | 2708 |
| HEART low risk | 7 (0.4%) | 1684 (99.6%) | 1691 |
| Total (n) | 449 | 3950 | 4399 |
| Risk stratification strategy | % low risk (95% CI) | Sensitivity (95% CI) | Specificity (95% CI) | PPV (95% CI) | NPV (95% CI) |
| EDACS | 58.1% (56.6 to 59.6) | 94.2% (91.6 to 96.2) | 64.1% (62.5 to 65.5) | 23.0% (21.0 to 24.9) | 99.0% (98.5 to 99.3) |
| HEART | 38.4% (37.0 to 39.9) | 98.4% (96.8 to 99.4) | 42.6% (41.1 to 44.2) | 16.3% (14.9 to 17.8) | 99.6% (99.1 to 99.8) |
*Per cents reported are row per cents.
EDACS, Emergency Department Assessment of Chest pain Score; HEART, History Electrocardiogram Age Risk factor Troponin; MACE, major adverse cardiac events; NPV, negative predictive value; PPV, positive predictive value.