Table 1 Baseline clinical characteristics of samples
Variables | Total (n = 857) | Training cohort (n = 577) | Validation cohort (n = 280) |
|---|---|---|---|
Age (year) | |||
 < 60 | 484 | 325 | 159 |
 ≥60 | 373 | 252 | 121 |
Sex | |||
 Female | 846 | 570 | 276 |
 Male | 11 | 7 | 4 |
Stage | |||
 I | 151 | 99 | 52 |
 II | 501 | 336 | 165 |
 III | 188 | 134 | 54 |
 IV | 17 | 8 | 9 |
T stage | |||
 T1 | 227 | 162 | 65 |
 T2 | 510 | 332 | 178 |
 T3 | 92 | 64 | 28 |
 T4 | 28 | 19 | 9 |
N stage | |||
 N0 | 411 | 285 | 126 |
 N1 | 292 | 186 | 106 |
 N2 | 102 | 73 | 29 |
 N3 | 52 | 33 | 19 |
M stage | |||
 M0 | 840 | 569 | 271 |
 M1 | 17 | 8 | 9 |
Survival | |||
 Dead | 118 | 83 | 35 |
 Alive | 739 | 494 | 245 |