Table 1 Unadjusted and adjusted baseline patients’ characteristics
Baseline characteristics of patients before PS matching | Baseline characteristics of patients after PS matching | ||||||
|---|---|---|---|---|---|---|---|
Total (n = 8163) | Off-pump (n = 1589) | On-pump (n = 6574) | p value | Off-pump (m = 1312) | On-pump (m = 1312) | p value | |
Female | 25.7% (2096) | 26.4% (420) | 25.5% (1676) | 0.462 | 26.2% (351) | 25.8% (346) | 0.860 |
Age | 62 ± 10 | 62 ± 10 | 62 ± 9 | 0.260 | 62.03 ± 9.88 | 62.00 ± 9.41 | 0.964 |
BMI | |||||||
< 30 | 75.1% (6096) | 74.3% (1170) | 75.3% (4926) | 0.423 | 74.9% (331) | 74.1 (992) | 0.658 |
≥ 30 | 24.9% (2016) | 25.7% (404) | 24.7% (1612) | 25,1% (336) | 25.9% (347) | ||
Hb | 13.89 ± 1.74 | 13.76 ± 1.79 | 13.92 ± 1.72 | 0.002 | 13.92 ± 1.71 | 13.85 ± 1.76 | 0.57 |
Graft number* | 3 [3, 4] | 3 [2, 3] | 3 [3, 4] | < 0.001 | 3 [2, 3] | 3 [2, 3] | 0.942 |
Creatinine* | 0.90 [0.77,1.07] | 0.90 [0.77,1.08] | 0.97 [0.77,1.06] | 0.108 | 0.90 [0.77, 1.07] | 0.90 [0.77, 1.09] | 0.739 |
eGFR | 86.38 [67.22, 107.74] | 85.5 [65.68, 107.89] | 86.44 [67.78, 107.64] | 0.159 | 85.28 [65.71, 106.82] | 85.83 [66.7, 107.65] | 0.388 |
Diabetes | 41.2% (3363) | 43% (681) | 40.8% (2682) | 0.122 | 42.6% (570) | 44.7% (598) | 0.293 |
Hypertension | 58.4% (4759) | 57.1% (903) | 58.7% (3586) | 0.266 | 57.4% (769) | 60.5% (810) | 0.116 |
Dyslipidemia | 53.8% (4386) | 55.1% (870) | 53.5% (3516) | 0.280 | 55.9% (748) | 56.5% (756) | 0.758 |
Positive family history | 30.0% (2449) | 27.7% (440) | 30.6% (2009) | 0.029 | 29.4% (393) | 29.4% (394) | < 0.999 |
Opium | 18.6% (1509) | 16.6% (260) | 19.1% (1249) | 0.026 | 17.2% (230) | 17.7% (237) | 0.760 |
Current cigarette smoking | 20.4% (1656) | 18.0% (283) | 21.0% (1373) | 0.01 | 18.7% (251) | 18.9% (253) | 0.961 |
Ejection fraction | |||||||
≥ 50 | 44.9% (3612) | 41.1% (637) | 45.8% (2975) | < 0.001 | 42.2% (565) | 43.2% (579) | 0.612 |
< 50 | 55.1% (4429) | 58.9% (911) | 54.2% (3518) | 57.8% (774) | 56.8% (760) | ||
Left main stenosis | 11.2% (913) | 11.7% (186) | 11.1% (727) | 0.490 | 11.3% (151) | 11.5% (154) | 0.903 |
Pre surgery PCI | 10.2% (834) | 12.5% (199) | 9.7% (635) | < 0.001 | 11.8% (158) | 12.2% (164) | 0.766 |
Renal failure | 2.8% (225) | 4.0% (63) | 2.5% (162) | < 0.001 | 3.4% (45) | 2.3% (30) | 0.103 |
COPD | 3.7% (302) | 4.6% (71) | 3.5% (231) | 0.065 | 4.0% (53) | 3.7% (49) | 0.762 |
Cerebrovascular accident | 10.1% (820) | 10.4% (163) | 10.0% (657) | 0.14 | 10.2% (137) | 11.4% (153) | 0.351 |
Urgent operation | 1.2% (98) | 0.9% (14) | 1.3% (84) | 0.671 | 0.7% (9) | 1.1% (15) | 0.305 |
Previous myocardial infarction | |||||||
No history | 70.2% (5730) | 73.1% (1161) | 69.5% (4569) | 0.001 | 72.0% (964) | 75.7% (1014) | 0.148 |
≤ 7 days | 10.4% (848) | 10.1% (160) | 10.5% (686) | 10.2% (136) | 9.3% (125) | ||
8–21 days | 7.1% (582) | 5.0% (79) | 7.7% (503) | 5.3% (71) | 4.7% (63) | ||
> 21 days | 12.3% (1003) | 11.9% (189) | 12.4% (814) | 12.5% (168) | 10.2% (137) | ||