Table 1.
Comparison of Groups B and M before and after propensity score‐matching
| All study patients | Propensity score‐matched patients | ||||||
|---|---|---|---|---|---|---|---|
| Group B (N = 2381) | Group M (N = 3411) | p | Group B (N = 1429) | Group M (N = 1429) | p | SMD | |
| Age (year) | 64.9 ± 4.0 | 59.2 ± 5.1 | <.001 | 63.1 ± 4.2 | 62.9 ± 4.3 | .250 | 0.043 |
| Female | 914 (38.4%) | 1190 (34.9%) | .007 | 522 (36.5%) | 529 (37.0%) | .816 | 0.010 |
| BSA (m2) | 1.67 ± 0.16 | 1.70 ± 0.16 | <.001 | 1.69 ± 0.15 | 1.69 ± 0.16 | .870 | 0.006 |
| Smoking | <.001 | .395 | 0.065 | ||||
| Nonsmoker | 1591 (66.8%) | 2100 (61.6%) | 919 (64.3%) | 895 (62.7%) | |||
| Ex‐smoker | 483 (20.3%) | 834 (24.5%) | 315 (22.0%) | 340 (23.8%) | |||
| Current smoker | 307 (12.9%) | 477 (14.0%) | 195 (13.6%) | 194 (13.6%) | |||
| Hypertension | 779 (32.7%) | 1042 (30.5%) | .206 | 467 (32.7%) | 467 (32.7%) | .361 | 0.053 |
| Diabetes mellitus | 634 (26.6%) | 719 (21.1%) | <.001 | 359 (25.1%) | 357 (25.0%) | .360 | 0.054 |
| Chronic renal failure | 125 (5.2%) | 157 (4.6%) | .322 | 69 (4.8%) | 65 (4.5%) | .939 | 0.013 |
| Dialysis | 32 (1.3%) | 44 (1.3%) | .566 | 18 (1.3%) | 17 (1.2%) | .986 | 0.006 |
| Chronic liver disease | 72 (3.0%) | 77 (2.3%) | .192 | 37 (2.6%) | 40 (2.8%) | .386 | 0.052 |
| History of cancer | 132 (5.5%) | 131 (3.8%) | .009 | 76 (5.3%) | 71 (5.0%) | .339 | 0.055 |
| History of stroke | 56 (2.4%) | 61 (1.8%) | .160 | 29 (2.0%) | 28 (2.0%) | >.999 | 0.009 |
| History of gastrointestinal bleeding | 110 (4.6%) | 142 (4.2%) | .439 | 63 (4.4%) | 66 (4.6%) | .857 | 0.018 |
| Congestive heart failure | 216 (9.1%) | 280 (8.2%) | .318 | 121 (8.5%) | 122 (8.5%) | .998 | 0.003 |
| Arrhythmia | 111 (4.7%) | 173 (5.1%) | .427 | 73 (5.1%) | 74 (5.2%) | .996 | 0.003 |
| Coronary artery disease | 108 (4.5%) | 136 (4.0%) | .356 | 64 (4.5%) | 62 (4.3%) | 0.983 | 0.007 |
| Acute myocardial infarction | 3 (0.1%) | 1 (0.0%) | .223 | 0 (0.0%) | 0 (0.0%) | >0.999 | <0.001 |
| Peripheral vascular obstructive disease | 5 (0.2%) | 7 (0.2%) | .572 | 5 (0.3%) | 2 (0.1%) | .525 | 0.042 |
| Chronic obstructive pulmonary disease | 128 (5.4%) | 119 (3.5%) | .001 | 75 (5.2%) | 73 (5.1%) | .986 | 0.006 |
| Aortic stenosis | 2052 (86.2%) | 2658 (77.9%) | <.001 | 1203 (84.2%) | 1224 (85.7%) | .296 | 0.059 |
| Aortic regurgitation | 768 (32.3%) | 1542 (45.2%) | <.001 | 540 (37.8%) | 558 (39.0%) | .513 | 0.041 |
| Mitral stenosis | 20 (0.8%) | 29 (0.9%) | .571 | 13 (0.9%) | 13 (0.9%) | >.999 | <0.001 |
| Mitral regurgitation | 51 (2.1%) | 80 (2.3%) | .492 | 33 (2.3%) | 29 (2.0%) | .876 | 0.019 |
| Tricuspid regurgitation | 0 (0.0%) | 1 (0.0%) | .403 | 0 (0.0%) | 0 (0.0%) | >.999 | <0.001 |
| Endocarditis | 76 (3.2%) | 118 (3.5%) | .478 | 44 (3.1%) | 45 (3.1%) | .994 | 0.004 |