Table 1:
Patient characteristics
| Original data |
Propensity matched |
|||||||
|---|---|---|---|---|---|---|---|---|
| OPCABG | RA-CABG | P-value | SMD | OPCABG | RA-CABG | P-value | SMD | |
| (N = 194) | (N = 107) | (N = 102) | (N = 102) | |||||
| Age, median (IQR) | 67.7 (10.2) | 65.3 (8.6) | 0.04 | 0.255 | 66.2 (10.4) | 65.3 (8.7) | 0.47 | 0.102 |
| Logistic EuroSCORE I, median (IQR) | 3.3 (2.8) | 2.94 (3.4) | 0.32 | 0.118 | 2.9 (2.7) | 2.7 (2.3) | 0.45 | 0.106 |
| eGFR, median (IQR) | 70.3 (20.1) | 75.4 (17.8) | 0.03 | 0.273 | 73.4 (19.2) | 75.1 (17.8) | 0.52 | 0.089 |
| Female gender, N (%) | 42 (21.6) | 30 (28.0) | 0.27 | 0.148 | 24 (23.5) | 27 (26.5) | 0.75 | 0.068 |
| Diabetes, N (%) | 0.06 | 0.295 | 0.92 | 0.058 | ||||
| Type 1 | 3 (1.5) | 4 (3.7) | 3 (2.9) | 4 (3.9) | ||||
| Type 2 | 50 (25.8) | 16 (15.0) | 17 (16.7) | 16 (15.7) | ||||
| No diabetes | 141 (72.7) | 87 (81.3) | 82 (80.4) | 82 (80.4) | ||||
| Hypertension, N (%) | 117 (60.3) | 56 (52.3) | 0.22 | 0.161 | 67 (65.7) | 54 (52.9) | 0.09 | 0.262 |
| Recent myocardial infarction, N (%) | 55 (28.4) | 20 (18.7) | 0.09 | 0.229 | 18 (17.6) | 19 (18.6) | 1.00 | 0.025 |
| Atrial fibrillation, N (%) | 8 (4.1%) | 3 (2.8%) | 0.79 | 0.072 | 3 (2.9%) | 2 (2.0%) | 1.00 | 0.063 |
| Chronic pulmonary disease, N (%) | 14 (7.2) | 15 (14.0) | 0.09 | 0.222 | 12 (11.8) | 12 (11.8) | 1.00 | <0.001 |
| Extracardiac arteriopathy, N (%) | 11 (5.7) | 8 (7.5) | 0.71 | 0.073 | 4 (3.9) | 7 (6.9) | 0.54 | 0.130 |
| Neurological dysfunction, N (%) | 1 (0.5) | 5 (4.7) | 0.04 | 0.264 | 1 (1.0) | 3 (2.9) | 0.61 | 0.142 |
| LVEF = 30-50%, N (%) | 41 (21.1) | 25 (23.4) | 0.76 | 0.054 | 21 (20.6) | 23 (22.5) | 0.87 | 0.048 |
| Aspirin, N (%) | 159 (82.0) | 85 (79.4) | 0.70 | 0.064 | 87 (85.3) | 81 (79.4) | 0.36 | 0.155 |
| Clopidogrel, N (%) | 86 (44.3) | 29 (27.1) | 0.01 | 0.365 | 25 (24.5) | 28 (27.5) | 0.75 | 0.067 |
| Ticagrelor, N (%) | 5 (2.6) | 4 (3.7) | 0.83 | 0.066 | 2 (2.0) | 4 (3.9) | 0.68 | 0.116 |
| Coumadin, N (%) | 11 (5.7) | 6 (5.6) | 1.00 | 0.003 | 3 (2.9) | 5 (4.9) | 0.72 | 0.101 |
CABG: coronary artery bypass grafting; eGFR: estimated glomerular filtration rate; IQR: interquartile range; LVEF: left ventricular ejection fraction; OPCABG: conventional off-pump CABG; RA-CABG: robot-assisted CABG; SMD: standardized mean difference.