Characteristics of non-ST segment elevation myocardial infarction in phase 1 and phase 2, before and after propensity score matching
| Characteristic | Before PSM | After PSM | ||
| Phase 1 (n (%)) | Phase 2 (n (%)) | Phase 1 (n (%)) | Phase 2 (n (%)) | |
| (n=407) | (n=2015) | (n=407) | (n=407) | |
| Age (years) | 65.5±11.5 | 65.4±10.2 | 65.5±11.5 | 64.6±10.2 |
| Men | 299 (73.5) | 1475 (73.2) | 299 (73.5) | 295 (72.5) |
| Women | 108 (26.5) | 540 (26.8) | 108 (26.5) | 112 (27.5) |
| CCI (%) | ||||
| 0 | 198 (48.6) | 995 (49.4) | 198 (48.6) | 213 (52.3) |
| 1 | 130 (31.9) | 616 (30.6) | 130 (31.9) | 115 (28.2) |
| 2 | 54 (13.3) | 230 (11.4) | 54 (13.3) | 47 (11.5) |
| 3 | 19 (4.7) | 104 (5.2) | 19 (4.7) | 20 (4.9) |
| ≥4 | 6 (1.5) | 70 (3.5)* | 6 (1.5) | 12 (2.9) |
*P<0.05.
CCI, Charlson Comorbidity Index, PSM, propensity score matching.