Variables | Total (N = 16228) | No SMuRF (N = 1918) | 1–2 SMuRFs (N = 11503) | 3–4 SMuRFs (N = 2807) | P value |
---|---|---|---|---|---|
In-hospital management | |||||
 Reperfusion therapy |  |  |  |  |  |
 Among all the patients |  |  |  |  | <0.0001 |
  No reperfusion | 7430 (46.2) | 1000 (52.8) | 5323 (46.7) | 1107 (39.8) |  |
  Fibrinolysis | 1618 (10.1) | 172 (9.1) | 1173 (10.3) | 273 (9.8) |  |
  Primary PCI | 7017 (43.7) | 722 (38.1) | 4894 (43.0) | 1401 (50.4) |  |
 Among patients admitted within 12 h from onset |  |  |  |  | <0.0001 |
  No reperfusion | 2953 (27.6) | 394 (33.2) | 2118 (28.0) | 441 (22.6) |  |
  Fibrinolysis | 1552 (14.5) | 163 (13.7) | 1122 (14.8) | 267 (13.7) |  |
  Primary PCI | 6210 (58.0) | 631 (53.1) | 4336 (57.2) | 1243 (63.7) |  |
 Door-to-balloon time, minute | 107 (75–159) | 110 (63–200) | 107 (75–158) | 105 (75–150) | 0.75 |
 Door-to needle time, minute | 53 (30–90) | 50 (29–80) | 55 (30–90) | 50 (30–101) | 0.30 |
 Any PCI | 10361 (63.8) | 1041 (54.3) | 7342 (63.8) | 1978 (70.5) | <0.0001 |
 Any CABG | 98 (0.6) | 9 (0.5) | 65 (0.6) | 24 (0.9) | 0.15 |
 Intra-aortic balloon pump use | 547 (3.4) | 50 (2.6) | 374 (3.3) | 123 (4.4) | 0.002 |
Medication during hospitalization | |||||
 Aspirin | 15697 (97.1) | 1840 (96.6) | 11119 (97.0) | 2738 (97.8) | 0.03 |
 P2Y12-receptor inhibitor | 15669 (97.5) | 1811 (95.7) | 11128 (97.7) | 2730 (98.1) | <0.0001 |
 Statin | 15598 (96.8) | 1807 (95.6) | 11076 (96.9) | 2715 (97.2) | 0.006 |
 β-blocker | 11227 (70.0) | 1270 (67.2) | 7935 (69.7) | 2022 (73.4) | <0.0001 |
 ACEI/ARB | 9404 (58.7) | 914 (48.5) | 6619 (58.2) | 1871 (67.9) | <0.0001 |
 Heparin | 14449 (91.5) | 1642 (88.8) | 10288 (91.8) | 2519 (92.2) | <0.0001 |
 Glucoprotein IIb or IIIa inhibitor | 5511 (35.3) | 549 (30.0) | 3920 (35.3) | 1042 (38.5) | <0.0001 |
In-hospital outcome | |||||
 Death | 1015 (6.3) | 157 (8.2) | 702 (6.1) | 156 (5.6) | 0.0006 |
 Cardiac arrest | 567 (3.5) | 90 (4.8) | 394 (3.5) | 83 (3.0) | 0.004 |
 Heart failure | 2501 (15.6) | 311 (16.5) | 1778 (15.6) | 412 (14.8) | 0.31 |
 Re-infarction | 88 (0.5) | 8 (0.4) | 62 (0.5) | 18 (0.6) | 0.59 |
 Cerebrovascular accident or stroke | 127 (0.8) | 12 (0.6) | 92 (0.8) | 23 (0.8) | 0.72 |
 Severe arrhythmia | 1372 (8.5) | 161 (8.5) | 1005 (8.8) | 206 (7.4) | 0.06 |
 Length of stay, day | 10 (7–13) | 10 (7–14) | 10 (7–13) | 9 (7–13) | 0.04 |
Medication at dischargea | |||||
 Aspirin | 15066 (99.2) | 1726 (98.3) | 10706 (99.3) | 2634 (99.4) | <0.0001 |
 Clopidogrel | 14868 (98.0) | 1701 (97.1) | 10567 (98.0) | 2600 (98.2) | 0.03 |
 Statin | 14993 (98.7) | 1709 (97.5) | 10664 (98.9) | 2620 (98.9) | <0.0001 |
 β-blocker | 11725 (77.3) | 1319 (75.2) | 8279 (76.9) | 2127 (80.5) | <0.0001 |
 ACEI/ARB | 10135 (66.8) | 1014 (57.9) | 7131 (66.2) | 1990 (75.3) | <0.0001 |