Table 1.
Preoperative baseline data of the training set and test set.
| Characteristic | N | Internal test cohort, N = 661 | Training cohort, N = 1511 | P-value |
|---|---|---|---|---|
| TLR | 217 | 11 (17%) | 23 (15%) | 0.792 |
| Male | 217 | 46 (70%) | 87 (58%) | 0.0932 |
| Age (years) | 217 | 68.0 (62.0, 76.0) | 70.0 (64.0, 78.0) | 0.213 |
| Height (cm) | 217 | 165.5 (162.0, 173.0) | 167.0(160.0, 171.0) | 0.533 |
| Weight (kg) | 217 | 69.0 (60.0, 75.) | 70.0 (62.0, 75.0) | 0.863 |
| BMI (kg/m2) | 217 | 0.354 | ||
| 18.5 ~ 25 | 41 (62%) | 76 (50%) | ||
| 25 ~ 30 | 21 (32%) | 65 (43%) | ||
| >30 | 4 (6.1%) | 8 (5.3%) | ||
| <18.5 | 0 (0%) | 2 (1.3%) | ||
| Rutherford category | 217 | 0.582 | ||
| 3 | 45 (68%) | 95 (63%) | ||
| 4 | 11 (17%) | 24 (16%) | ||
| 5 | 10 (15%) | 32 (21%) | ||
| Diabetes | 217 | 44 (67%) | 105 (70%) | 0.682 |
| Hypertension | 217 | 47 (71%) | 113 (75%) | 0.582 |
| Smoke | 217 | 27 (41%) | 42 (28%) | 0.0572 |
| Cardio-cerebrovascular disease | 217 | 22 (33%) | 61 (40%) | 0.322 |
| Dialysis | 217 | 2 (3.0%) | 12 (7.9%) | 0.244 |
| Hyperlipidemia | 217 | 29 (44%) | 86 (57%) | 0.0772 |
1n (%), M (P25, P75), 2Pearson’s Chi-squared test, 3Wilcoxon rank sum test, 4Fisher’s exact test. TLR: Target lesion revascularization.