Table 2 Baseline characteristics of the unmatched and propensity matched groups
Variables | Total (n = 993) | Overall cohort | PSM Cohort | ||||
|---|---|---|---|---|---|---|---|
Stage 3 (n = 236) | Control (n = 757) | P value* | Stage 3 (n = 119) | Control (n = 119) | P value* | ||
Demographic data | |||||||
Age (year) | 53.0 ± 13.1 | 54.0 ± 13.4 | 52.7 ± 13.1 | 0.186 | 53.7 ± 13.3 | 51.2 ± 12.3 | 0.141 |
Male (%) | 730 (73.5) | 179 (75.8) | 551 (72.8) | 0.352 | 92 (77.3) | 93 (78.2) | 0.876 |
BMI (kg/m2) | 25.6 ± 4.8 | 26.3 ± 4.8 | 25.4 ± 4.8 | 0.036 | 26.5 ± 4.8 | 26.0 ± 4.4 | 0.371 |
Medical history | |||||||
Hypertension (%) | 715 (72.0) | 186 (78.8) | 529 (69.9) | 0.008 | 87 (73.1) | 91 (76.5) | 0.550 |
Diabetes mellitus (%) | 23 (2.3) | 4 (1.7) | 19 (2.5) | 0.467 | 0 (0) | 3 (2.5) | 0.247 |
Previous cardiac surgery (%) | 44 (4.4) | 14 (5.9) | 30 (4.0) | 0.199 | 6 (5.0) | 5 (4.2) | 0.758 |
Previous coronary artery disease (%) | 34 (3.4) | 11 (4.7) | 23 (3.0) | 0.231 | 3 (2.5) | 2 (1.7) | 1.000 |
Cerebrovascular disease (%) | 36 (3.6) | 9 (3.8) | 27 (3.6) | 0.859 | 6 (5.0) | 1 (0.8) | 0.119 |
LVEF (%) | 55.1 ± 6.6 | 54.2 ± 5.9 | 55.3 ± 6.7 | 0.489 | 55.1 ± 5.6 | 54.0 ± 8.7 | 0.728 |
Time from symptom onset to admission | 10.7 ± 6.0 | 12.3 ± 7.1 | 11.4 ± 6.4 | 0.274 | 12.5 ± 6.8 | 11.7 ± 6.5 | 0.259 |
Pericardial tamponade (%) | 166 (16.7) | 55 (23.3) | 111 (14.7) | 0.002 | 21 (17.6) | 17 (14.3) | 0.479 |
DeBakey type I (%) | 816 (82.2) | 207 (87.7) | 609 (80.4) | 0.011 | 103 (86.6) | 102 (85.7) | 0.851 |
MELD score ≥ 12 (%) | 268 (27.2) | 103 (45.2) | 165 (21.8) | < 0.001 | 38 (33.0) | 31 (26.1) | 0.241 |
Preoperative laboratory data | |||||||
WBC (109/L) | 11.7 ± 11.1 | 12.3 ± 4.7 | 11.5 ± 12.4 | 0.339 | 12.9 ± 5.2 | 11.6 ± 4.2 | 0.171 |
Hemoglobin (g/L) | 122.4 ± 29.0 | 121.4 ± 41.2 | 122.8 ± 24.0 | 0.630 | 120.8 ± 48.7 | 117.4 ± 26.6 | 0.381 |
PLT (109/L) | 150.9 ± 86.2 | 142.6 ± 62.7 | 153.5 ± 92.3 | 0.091 | 151.8 ± 59.0 | 145.7 ± 62.4 | 0.440 |
sCr (μmol/L) | 81.0 (61.8, 114.2) | 101.2 (68.1, 175.8) | 77.6 (60.0, 104.1) | < 0.001 | 111.1 ± 84.4 | 108.0 ± 88.3 | 0.784 |
Bun (mmol/L) | 8.2 ± 4.0 | 9.9 ± 5.6 | 7.7 ± 3.2 | < 0.001 | 8.3 ± 3.9 | 8.6 ± 4.1 | 0.658 |
ALB (g/L) | 36.5 ± 5.0 | 35.6 ± 5.9 | 36.8 ± 4.7 | 0.008 | 36.5 ± 5.8 | 36.3 ± 4.9 | 0.758 |
ALT (U/L) | 25.6 (15.7, 46.8) | 30.3 (15.2, 81.1) | 22.3 (14.3, 41.1) | < 0.001 | 29.6 (17.4, 74.9) | 25.9 (14.2, 41.5) | 0.113 |
CRP (mg/dL) | 23.6 (5.0, 81.6) | 19.2 (4.8, 66.4) | 22.2 (4.4, 67.5) | 0.628 | 19.2 (5.2, 67.2) | 24.9 (4.5, 106.4) | 0.171 |
Triglyceride (mmol/L) | 1.0 (0.7, 1.5) | 1.1 (0.7, 1.6) | 0.9 (0.7, 1.5) | 0.166 | 1.1 (0.8, 1.6) | 1.0 (0.8, 1.4) | 0.353 |
Total bilirubin (μmol/L) | 15.8 (11.1, 23.1) | 14.6 (10.0, 23.1) | 15.2 (11.3, 22.2) | 0.685 | 17.7 ± 15.4 | 18.5 ± 15.4 | 0.674 |
INR | 1.1 (1.0, 1.2) | 1.3 ± 0.8 | 1.2 ± 0.7 | < 0.001 | 1.2 ± 0.5 | 1.1 ± 0.2 | 0.060 |
D-dimer (ng/mL) | 4.6 (2.3, 9.3) | 4.9 (2.9, 12.3) | 3.9 (2.1, 7.1) | 0.001 | 4.7 (2.9, 9.5) | 6.0 (3.1, 11.5) | 0.868 |
Preoperative CTA | |||||||
Involving the left renal artery (%) | 394 (77.0) | 91 (77.0) | 303 (79.7) | 0.419 | 45 (73.8) | 44 (72.1) | 0.596 |
Involving the right renal artery (%) | 440 (87.6) | 100 (85.4) | 340 (89.9) | 0.386 | 53 (78.5) | 45 (74.2) | 0.479 |