Table 1 Patient characteristics before and after propensity score matching
Patient characteristics | Patients with IVA | Patients with ITMA | Standardized difference | Patients with IVA | Patients with ITMA | Standardized difference | ||||
|---|---|---|---|---|---|---|---|---|---|---|
N = 623 | N = 920 | % | N = 557 | N = 557 | % | |||||
Age (years) a | 65.1 | (15.3) | 61.4 | (17.2) | −22.8 | 64.7 | (15.7) | 63.8 | (16.0) | −5.1 |
Sex (male) | 424 | (68.1) | 610 | (66.3) | 3.7 | 372 | (66.8) | 381 | (68.4) | 3.4 |
Hypertension | 344 | (55.2) | 432 | (47.0) | −16.6 | 295 | (52.3) | 288 | (51.7) | −2.5 |
Diabetes | 134 | (21.5) | 159 | (17.3) | −10.7 | 112 | (20.1) | 113 | (20.3) | 0.5 |
Hypercholesterolemia | 137 | (22.0) | 180 | (19.6) | −6.0 | 116 | (20.8) | 125 | (22.4) | 4.0 |
Coronary heart disease | 331 | (53.1) | 335 | (36.4) | −34.1 | 269 | (48.3) | 263 | (47.2) | −2.2 |
Peripheral vascular disease | 127 | (20.4) | 171 | (18.6) | −4.5 | 108 | (19.4) | 120 | (21.5) | 5.4 |
Chronic pulmonary disease | 63 | (10.1) | 77 | (8.4) | −6.0 | 46 | (8.3) | 48 | (8.6) | 1.2 |
Smoking | 102 | (16.4) | 87 | (9.5) | −20.7 | 65 | (11.7) | 62 | (11.1) | −1.6 |
Obesity | 57 | (9.2) | 82 | (8.9) | −0.8 | 51 | (9.2) | 56 | (10.1) | 3.1 |
Chronic kidney disease | 79 | (12.7) | 79 | (8.6) | −13.3 | 63 | (11.3) | 55 | (9.9) | −4.7 |
Parsonnet score | 14.9 | (9.0) | 13.7 | (8.7) | −13.4 | 14.7 | (9.0) | 14.7 | (9.1) | 0.5 |
Type of surgery | ||||||||||
CABG | 187 | (30.0) | 182 | (19.8) | −23.8 | 151 | (27.1) | 136 | (24.4) | −6.3 |
Valve surgery | 291 | (46.7) | 530 | (57.6) | 21.9 | 281 | (50.5) | 283 | (50.8) | 0.7 |
Combined surgery | 110 | (17.7) | 123 | (13.4) | −11.9 | 91 | (16.3) | 94 | (16.9) | 1.5 |
Other | 35 | (5.6) | 85 | (9.2) | 13.8 | 34 | (6.1) | 44 | (7.9) | 6.9 |