Characteristics | Training cohort | Validation cohort | Combined cohort |
---|---|---|---|
 | (n = 262) | (n = 263) | (n = 525) |
Age | Â | Â | Â |
 <60 | 119 | 125 | 244 |
 ≥ 60 | 143 | 138 | 281 |
Gender | Â | Â | Â |
 Male | 180 | 163 | 343 |
 Female | 82 | 100 | 182 |
TNM stage | Â | Â | Â |
 I-II | 158 | 159 | 317 |
 III-IV | 102 | 103 | 205 |
 NA | 2 | 1 | 3 |
Pathological grade | Â | Â | Â |
 1–2 | 117 | 121 | 238 |
 3–4 | 140 | 139 | 279 |
 NA | 5 | 3 | 8 |
Overall survival | Â | Â | Â |
 Alive | 181 | 173 | 354 |
 Dead | 81 | 90 | 171 |
Progression Free Interval | Â | Â | Â |
 Free of progression | 186 | 179 | 365 |
 Progressed | 76 | 84 | 160 |