Table 1.
Standardized differences of the variables.
| Before Matching | After Matching | |
|---|---|---|
| BMI (kg/m2) | 0.152 | 0.055 |
| Preoperative LVEF (%) | 0.038 | 0.039 |
| Estimated creatinine clearance (mL/min) | 1.023 | 0.079 |
| NYHA I | 0.046 | 0.023 |
| NYHA II | 0.139 | 0.048 |
| NYHA III | 0.150 | 0.035 |
| NYHA IV | <0.001 | 0.029 |
| Sex | 0.170 | 0.075 |
| Diabetes (no/yes) | 0.167 | 0.048 |
| Pulmonary hypertension (no/yes) | 0.251 | 0.061 |
| Coronary artery disease (no/yes) | 0.380 | 0.012 |
| Peripheral vascular disease (no/yes) | 0.016 | 0.032 |
| Chronic obstructive pulmonary disease (no/yes) | 0.008 | 0.020 |