Baseline characteristics
| Baseline characteristics | Early coronary intervention group (n=81) | Delayed coronary intervention group (n=81) | P value |
| Age (years), mean±SD | 61.8±12.1 | 0.100 | |
| Gender | 0.873 | ||
| Female | 32 (39.5) | 34 (42.0) | |
| Male | 49 (60.5) | 47 (58.0) | |
| GRACE risk score, mean±SD | 107.5±26.1 | 104.7±21.8 | 0.463 |
| Medical conditions | |||
| Diabetes | 21 (25.9) | 24 (29.6) | 0.726 |
| Hypertension | 45 (55.5) | 41 (50.6) | 0.637 |
| Dyslipidaemia | 29 (35.8) | 31 (38.3) | 0.875 |
| Smoking | 46 (56.8) | 40 (49.4) | 0.431 |
| Prior MI | 2 (2.5) | 2 (2.5) | 0.690 |
| Congestive heart failure | 0 (0) | 1 (1.2) | 0.500 |
| Stroke | 3 (3.7) | 4 (5.0) | 0.500 |
| Chronic kidney disease | 7 (8.6) | 3 (3.7) | 0.328 |
| Median time from symptom onset to fibrinolysis (hours) (IQR: 25th, 75th percentiles) | 2.83 (1.7, 4.3) | 2.2 (1.5, 4.0) | 0.835 |
| Median time from fibrinolysis to PCI (IQR: 25th, 75th percentiles) | 12.0 hours (5.5, 18.9) | 2.5 days (1.7, 4) | <0.001 |
| Clinical presentation (%) | 0.874 | ||
| Non-anterior wall | 46 (56.8) | 48 (59.3) | |
| Anterior wall | 35 (43.2) | 33 (40.7) | |
| LVEF (%) | 52.3±12.9 | 55.7±11.7 | 0.082 |
| Serum creatinine (mg/L) | 1.1±0.5 | 1.0±0.5 | 0.310 |
GRACE, Global Registry of Acute Coronary Events;LVEF, left ventricular ejection fraction; MI, myocardial infarction; PCI, percutaneous coronary intervention.