Main baseline characteristics
| Whole population (N=3079), N (%) | NSTEMI (N=1306), N (%) | STEMI or presumed new LBBB (N=1773), N (%) | p Value | |
| Centre | 0.038 | |||
| Academic | 1077 (35) | 426 (33) | 651 (37) | |
| General hospital | 1257 (41) | 558 (43) | 699 (39) | |
| Private clinic | 597 (19) | 262 (20) | 335 (19) | |
| Private, not for profit | 138 (4.5) | 53 (4) | 85 (5) | |
| Army | 10 (0.3) | 7 (0.5) | 3 (0.2) | |
| Centre with PCI on site | 2789 (91) | 1125 (86) | 1664 (94) | <0.001 |
| Age | 65.6±14.4 | 68.2±13.6 | 63.7±14.6 | <0.001 |
| Age >75 years | 960 (31) | 488 (37) | 472 (26) | <0.001 |
| Sex (female) | 829 (27) | 388 (30) | 441 (25) | 0.003 |
| Risk factors | ||||
| Hypertension | 1653 (54) | 805 (62) | 848 (48) | <0.001 |
| Hypercholesterolaemia | 1328 (43) | 619 (47) | 709 (40) | <0.001 |
| Diabetes mellitus | 653 (21) | 346 (26.5) | 307 (17) | <0.001 |
| Current smoking | 1035 (34) | 328 (25) | 707 (40) | <0.001 |
| Family history | 768 (25) | 318 (24) | 450 (25) | 0.513 |
| Cardiovascular history | ||||
| No known CAD | 2293 (74.5) | 838 (64) | 1455 (82) | <0.001 |
| Previous MI | 498 (16) | 293 (22) | 205 (12) | <0.001 |
| Previous PCI | 489 (16) | 303 (23) | 186 (10.5) | <0.001 |
| Previous CABG | 212 (7) | 112 (9) | 100 (6) | 0.026 |
| History of heart failure | 146 (5) | 94 (7) | 52 (3) | <0.001 |
| History of stroke or TIA | 139 (4.5) | 68 (5) | 71 (4) | 0.112 |
| Peripheral artery disease | 244 (8) | 154 (12) | 90 (5) | <0.001 |
| Medications used before event | ||||
| Aspirin | 696 (23) | 402 (31) | 294 (17) | <0.001 |
| Thienopyridine | 398 (13) | 263 (20) | 135 (7) | <0.001 |
| Statin | 864 (28) | 468 (36) | 396 (22) | <0.001 |
| β-blocking agent | 738 (24) | 399 (31) | 339 (19) | <0.001 |
| ACE-inhibitor or angiotensin II receptor blockers | 1030 (33.5) | 552 (40.5) | 478 (28) | <0.001 |
CABG: coronary artery bypass graft surgery; CAD, coronary artery disease; GRACE, Global registry of acute coronary events; LBBB, left bundle branch block; MI, myocardial infarction; NSTEMI, non-ST-segment-elevation myocardial infarction; PCI, percutaneous coronary intervention; STEMI, ST-segment-elevation myocardial infarction; TIA, transient ischaemic attack.