Table 1 The clinical characteristics of patients in training set and testing set from TCGA dataset
Characteristics | Training cohort (N = 346) | Testing cohort (N = 149) | Entire TCGA cohort (N = 495) | p |
|---|---|---|---|---|
Age (years) | 0.695 | |||
 < 60 | 168 (48.6%) | 69 (46.3%) | 237 (47.9%) |  |
 ≥ 60 | 178 (51.4%) | 80 (53.7%) | 258 (52.1%) |  |
Gender | 0.256 | |||
 Female | 124 (35.8%) | 45 (30.2%) | 169 (34.1%) |  |
 Male | 222 (64.2%) | 104 (69.8%) | 326 (65.9%) |  |
Grade | Â | Â | Â | 0.093 |
 G1 | 8 (2.3%) | 2 (1.3%) | 10 (2.0%) |  |
 G2 | 164 (47.4%) | 54 (36.2%) | 218 (44.0%) |  |
 G3 | 130 (37.6%) | 68 (45.6%) | 198 (40.0%) |  |
 G4 | 44 (12.7%) | 25 (16.8%) | 69 (13.9%) |  |
Stage | 0.298 | |||
 Stage i | 171 (49.4%) | 77 (51.7%) | 248 (50.1%) |  |
 Stage ii | 39 (11.3%) | 14 (9.4%) | 53 (10.7%) |  |
 Stage iii | 87 (25.1%) | 29 (19.5%) | 116 (23.4%) |  |
 Stage iv | 49 (14.2%) | 29 (19.5%) | 78 (15.8%) |  |
T | 0.923 | |||
 T1 | 175 (50.6%) | 79 (53.0%) | 254 (51.3%) |  |
 T2 | 47 (13.6%) | 18 (12.1%) | 65 (13.1%) |  |
 T3 | 118 (34.1%) | 49 (32.9%) | 167 (33.7%) |  |
 T4 | 6 (1.7%) | 3 (2.0%) | 9 (1.8%) |  |
N | Â | Â | Â | 0.927 |
 N0 | 156 (45.1%) | 68 (45.6%) | 224 (45.3%) |  |
 N1 | 10 (2.9%) | 3 (2.0%) | 13 (2.6%) |  |
 NX | 180 (52.0%) | 78 (52.3%) | 258 (52.1%) |  |
 M |  |  |  | 0.410 |
 M0 | 283 (81.8%) | 115 (77.2%) | 398 (80.4%) |  |
 M1 | 47 (13.6%) | 27 (18.1%) | 74 (14.9%) |  |
 MX | 16 (4.6%) | 7 (4.7%) | 23 (4.6%) |  |