Table 2.
Patients’ clinical features of training set and testing set.
| Covariate | Total | Training set | Testing set | |
|---|---|---|---|---|
| N = 343 | N = 172 | N = 171 | ||
| Age (years), no (%) | ≤ 65 | 216 (63.0) | 55 (32.0) | 99 (57.9) |
| > 65 | 127 (37.0) | 117 (68.0) | 72 (42.1) | |
| Gender (years), no (%) | Female | 110 (32.1) | 53 (30.8) | 57 (33.3) |
| Male | 233 (67.9) | 119 (69.2) | 114 (66.7) | |
| Vital status, no (%) | Alive | 220 (64.1) | 110 (64.0) | 110 (64.3) |
| Dead | 123 (35.9) | 62 (36.0) | 61 (35.7) | |
| Grade, no (%) | G1 | 53 (15.5) | 22 (12.8) | 31 (18.1) |
| G2 | 161 (46.9) | 85 (49.4) | 76 (44.4) | |
| G3 | 112 (32.7) | 55 (32.0) | 57 (33.3) | |
| G4 | 12 (3.5) | 8 (4.7) | 4 (2.3) | |
| Unknow | 5 (1.5) | 2 (1.2) | 3 (1.8) | |
| Stage, no (%) | Stage I-II | 238 (69.4) | 115 (66.9) | 123 (71.9) |
| Stage III-IV | 83 (24.2) | 43 (25.0) | 40 (23.4) | |
| Unknow | 22 (6.4) | 14 (8.1) | 8 (4.7) | |
| T state, no (%) | T1 | 168 (49) | 84 (48.8) | 84 (49.1) |
| T2 | 84 (24.5) | 40 (23.3) | 44 (25.7) | |
| T3 | 75 (21.9) | 39 (22.7) | 36 (21.1) | |
| T4 | 13 (3.8) | 8 (4.7) | 5 (2.9) | |
| TX | 3 (0.9) | 1 (0.6) | 2 (1.2) | |
| N stage, no (%) | N0 | 239 (69.7) | 119 (69.2) | 120 (70.1) |
| N1 | 3 (0.9) | 1 (0.6) | 2 (1.2) | |
| NX | 101 (29.4) | 52 (30.2) | 49 (28.7) | |
| M stage, no (%) | M0 | 245 (71.4) | 122 (70.9) | 123 (71.9) |
| M1 | 3 (0.9) | 2 (1.2) | 1 (0.6) | |
| MX | 95 (27.7) | 48 (27.9) | 47 (27.5) | |