TABLE 1.
Clinical characteristics of included patients.
| Covariates | Type | Total (n = 998) | Train (n = 500) | Test (n = 498) | p value |
|---|---|---|---|---|---|
| age | ≤65 | 724 (72.55%) | 349 (69.8%) | 375 (75.3%) | 0.0606 |
| >65 | 274 (27.45%) | 151 (30.2%) | 123 (24.7%) | ||
| gender | FEMALE | 986 (98.8%) | 494 (98.8%) | 492 (98.8%) | 1 |
| MALE | 12 (1.2%) | 6 (1.2%) | 6 (1.2%) | ||
| stage | Stage I-II | 735 (73.65%) | 370 (74%) | 365 (73.29%) | 0.7291 |
| Stage III-X | 252 (25.25%) | 123 (24.6%) | 129 (25.9%) | ||
| T | T1-2 | 840 (84.17%) | 422 (84.4%) | 418 (83.94%) | 0.8505 |
| T3-4 | 155 (15.53%) | 76 (15.2%) | 79 (15.86%) | ||
| M0 | M0 | 827 (82.87%) | 411 (82.2%) | 416 (83.53%) | 0.6905 |
| M1 | 21 (2.1%) | 9 (1.8%) | 12 (2.41%) | ||
| N | N0-1 | 799 (80.06%) | 400 (80%) | 399 (80.12%) | 1 |
| N2-3 | 182 (18.24%) | 91 (18.2%) | 91 (18.27%) |