Table 1 Baseline characteristics of subjects before and after propensity score matched analysis
Variable | Before matching | Propensity score matched | ||||
|---|---|---|---|---|---|---|
Control group (n = 1663) | UTI group (n = 409) | P value | Control group (n = 409) | UTI group (n = 409) | P value | |
Age, yr | 56 ± 13 | 54 ± 14 | 0.008 | 54 ± 14 | 54 ± 14 | 0.880 |
Male sex, n (%) | 883 (53) | 234 (57) | 0.135 | 235 (57.45) | 234 (57.21) | 0.944 |
BMI, kg/m2 | 23.6 ± 3.6 | 23.4 ± 3.6 | 0.315 | 23.5 ± 3.7 | 23.4 ± 3.6 | 0.757 |
History of hypertension, n (%) | 581 (36) | 125 (31) | 0.094 | 119 (29.1) | 125 (30.6) | 0.647 |
History of diabetes mellitus, n (%) | 175 (10.5) | 40 (9.8) | 0.315 | 44 (10.8) | 40 (9.8) | 0.363 |
Insulin-controlled diabetes, n (%) | 99 (6.0) | 26 (6.4) | 0.563 | 27 (6.6) | 26 (6.4) | 0.887 |
COPD, n (%) | 27 (1.6) | 11 (2.7) | 0.150 | 9 (2.2) | 11 (2.7) | 0.490 |
Chronic kidney disease, n (%) | 30 (1.8) | 5 (1.2) | 0.414 | 3 (0.73) | 5 (1.2) | 0.722 |
Cerebrovascular disease, n (%) | 80 (4.8) | 15 (3.7) | 0.322 | 14 (3.4) | 15 (3.7) | 0.850 |
Coronary angiography, n (%) | 590 (35.5) | 150 (36.7) | 0.651 | 165 (40.3) | 150 (36.7) | 0.281 |
Ejection fraction, % | 59.2 ± 8.4 | 59.1 ± 9.4 | 0.953 | 58.9 ± 8.7 | 59.1 ± 9.4 | 0.761 |
Creatinine, μmol/L | 75.0 ± 33.3 | 82.4 ± 26.9 | <0.001 | 82.9 ± 53.9 | 82.4 ± 26.9 | 0.889 |
CPB duration, min | 112.9 ± 48.0 | 106.3 ± 42.0 | 0.006 | 103.2 ± 40.2 | 106.3 ± 42.0 | 0.285 |
MAP, mmHg | 62.3 ± 7.3 | 62.1 ± 5.6 | 0.515 | 62.2 ± 7.8 | 62.1 ± 5.6 | 0.803 |
RBCs transfused, U | 4.3 ± 4.2 | 5.8 ± 4.9 | <0.001 | 5.3 ± 5.3 | 5.8 ± 4.9 | 0.241 |
Hematocrit, % | 23.4 ± 4.6 | 25.0 ± 5.6 | <0.001 | 25.1 ± 5.3 | 25.0 ± 5.6 | 0.736 |
Mechanical ventilation, median (range) | 7.8 (5.5–10.6) | 7.8 (5.9–11.2) | 0.073 | 7.8 (5.2–11.7) | 7.8 (5.9–11.2) | 0.078 |