| Interval | PCI-capable centre; median time (IQR), min* | Non−PCI-capable centre; median time (IQR), min* | p value† |
|---|---|---|---|
| n = 501 | n = 960 | ||
| Symptom onset to first arrival at ED | 86 (57–144) | 80 (48–160) | 0.2 |
| Arrival to first ECG | 8 (5–14) | 8 (3–18) | 0.6 |
| Arrival to primary PCI | 73 (53–93) | 113 (96–142) | < 0.01 |
| Arrival to thrombolytic or fibrinolytic therapy | 22.5 (16–32) | 32 (17–57) | 0.3 |
| Reperfusion within optimal treatment intervals, n (%) | 353 (70.8) | 564 (58.7) | < 0.001 |
Note: ECG = electrocardiogram, ED = emergency department, IQR = interquartile range. Time intervals were calculated for 1) patients receiving either primary PCI or fibrinolysis, 2) presenting within 12 hr of symptom onset and 3) where the first ECG was the diagnostic ECG. *Unless otherwise indicated. †Two-sample Wilcoxon test.