Table 1.
Baseline characteristics before and after PS matching
| Characteristics | Unadjusted | After PS matching | ||||
|---|---|---|---|---|---|---|
| OPCABG (n = 371) | MICS (n = 211) | Standardized Difference | OPCABG (n = 172) | MICS (n = 172) | Standardized Difference | |
| Age | 61.6 ± 8.8 | 58.6 ± 9.3 | 33.10 | 60.2 ± 9.1 | 60.2 ± 8.9 | 0.00 |
| Male | 274 (74) | 185 (88) | 35.64 | 140 (81) | 146 (85) | 9.30 |
| BMI | 25.7 ± 3.4 | 25.4 ± 3.0 | 7.91 | 25.4 ± 3.0 | 25.6 ± 3.0 | 7.03 |
| LVEDD | 50.0 ± 6.5 | 48.8 ± 4.4 | 21.32 | 48.3 ± 6.0 | 49.1 ± 4.5 | 9.27 |
| LVEDS | 33.9 ± 6.9 | 32.1 ± 4.3 | 32.54 | 31.8 ± 5.2 | 32.5 ± 4.4 | 9.87 |
| EF | 57.8 ± 10.0 | 62.1 ± 6.0 | 52.70 | 62.0 ± 7.4 | 61.1 ± 5.7 | 9.90 |
| LITA D | 0.21 ± 0.04 | 0.21 ± 0.03 | 0.00 | 0.21 ± 0.03 | 0.21 ± 0.03 | 0.00 |
| LITA V | 74.6 ± 19.6 | 74.1 ± 19.1 | 2.79 | 75.1 ± 21.4 | 74.3 ± 19.9 | 5.70 |
| Target vessels | 3.2 ± 0.7 | 2.9 ± 0.8 | 41.81 | 3.1 ± 0.7 | 3.0 ± 0.8 | 9.83 |
| SYNTAX score | 45.6 ± 15.3 | 40.5 ± 15.9 | 32.51 | 42.6 ± 14.0 | 42.2 ± 15.8 | 2.41 |
| History of PCI | 55 (15) | 39 (18) | 9.84 | 27 (16) | 30 (17) | 4.68 |
| History of MI | 65 (18) | 35 (17) | 2.47 | 28 (16) | 31 (18) | 4.62 |
| Hypertension | 232 (63) | 122 (58) | 9.63 | 105 (61) | 104 (61) | 1.19 |
| Diabetes | 146 (39) | 82 (39) | 1.00 | 66 (38) | 70 (41) | 4.77 |
| CLD | 63 (17) | 34 (16) | 2.34 | 27 (16) | 32 (19) | 7.70 |
| Cerebrovasc | 58 (16) | 33 (16) | 0.03 | 27 (16) | 26 (16) | 1.63 |
| Creatinine | 80.1 ± 71.4 | 73.7 ± 18.2 | 12.25 | 74.1 ± 18.9 | 74.4 ± 19.5 | 1.56 |
BMI body mass index (kg/m.2), LVEDD left ventricular end diastolic diameter (cm), LVEDS left ventricular end systolic diameter (cm), EF ejection fraction (%), LITA D diameter of LITA (cm), LITA V velocity of LITA (cm/s), Target vessels target vessels number, MI myocadial infarction, CLD chronic lung disease history, Cerebrovasc cerebrovascular abnormal sign of head CT, Creatinine preoperative creatinine (umol/L)