Table 1.
Comparison of baseline characteristics in training, internal and external test sets
| Variable | Training set (N = 400) | Internal test set (N = 97) | External test set (N = 28) | P |
|---|---|---|---|---|
| Age | 0.26 | |||
| ≤65 years | 312 (78.0) | 80 (82.5) | 19 (67.9) | |
| >65 years | 88 (22.0) | 17 (17.5) | 9 (32.1) | |
| BMI | 0.35 | |||
| <18 | 17 (4.3) | 2 (2.1) | 2 (7.1) | |
| 18 ≤ X < 24 | 275 (68.8) | 73 (75.3) | 16 (57.1) | |
| 24 ≤ X < 28 | 96 (23.5) | 19 (19.6) | 10 (35.8) | |
| ≥28 | 12 (3.4) | 3 (3.0) | 0 (0.0) | |
| ECOG | 0.29 | |||
| 0 | 97 (24.3) | 19 (19.6) | 13 (46.4) | |
| 1 | 277 (69.3) | 74 (76.3) | 12 (42.9) | |
| 2 | 26 (6.4) | 4 (4.1) | 3 (10.7) | |
| FIGO stage | 0.33 | |||
| Stage II | 22 (5.5) | 3 (3.1) | 0 (0.0) | |
| Stage III | 246 (61.5) | 70 (72.2) | 14 (50.0) | |
| Stage IV | 132 (33.0) | 24 (24.7) | 14 (50.0) | |
| Pretreatment | 382.5 | 592.3 | 301.0 | 0.17 |
| CA125 level (U/ml) | (3.4–7410) | (5.9–7459) | (7.9–1287) |