Table 1 Patients’ clinical characteristics of training, test and entire cohorts
Variables | Total cohort % | Training cohort % | Test cohort % | p-value |
|---|---|---|---|---|
Age | ||||
  <  = 60 | 389 (77.49) | 190 (75.7) | 199 (79.28) | 0.3926 |
  > 60 | 113 (22.51) | 61 (24.3) | 52 (20.72) | |
Gender | ||||
 Female | 367 (73.11) | 188 (74.9) | 179 (71.31) | 0.4207 |
 Male | 135 (26.89) | 63 (25.1) | 72 (28.69) | |
Stage | ||||
 Stage I–II | 333 (66.33) | 158 (62.95) | 175 (69.72) | 0.1003 |
 Stage III–IV | 167 (33.27) | 93 (37.05) | 74 (29.48) | |
 Unknow | 2 (0.4) | 0 (0) | 2 (0.8) | |
T stage | ||||
 T1-2 | 307 (61.16) | 154 (61.35) | 153 (60.96) | 1 |
 T3-4 | 193 (38.45) | 96 (38.25) | 97 (38.65) | |
 Unknow | 2 (0.4) | 1 (0.4) | 1 (0.4) | |
M stage | ||||
 M0 | 282 (56.18) | 139 (55.38) | 143 (56.97) | 1 |
 M1 | 9 (1.79) | 4 (1.59) | 5 (1.99) | |
 Unknow | 211 (42.03) | 108 (43.03) | 103 (41.04) | |
N stage | ||||
 N0 | 229 (45.62) | 111 (44.22) | 118 (47.01) | 0.7806 |
 N1 | 223 (44.42) | 112 (44.62) | 111 (44.22) | |
 Unknow | 50 (9.96) | 28 (11.16) | 22 (8.76) | |