Table 1. The main clinical and pathological characteristics of the 407 CC patients.
| combined cohort (407) | training (204) | validation (203) | P | ||
|---|---|---|---|---|---|
| age | ≧60 | 287 | 145 | 142 | 0.444 |
| <60 | 120 | 59 | 61 | ||
| gender | male | 217 | 110 | 107 | 0.442 |
| female | 190 | 94 | 96 | ||
| T | T1+T2 | 82 | 41 | 41 | 0.539 |
| T3+T4 | 325 | 163 | 162 | ||
| N | N0 | 236 | 122 | 114 | 0.26 |
| N1+N2 | 171 | 82 | 89 | ||
| M | M0 | 298 | 152 | 145 | 0.49 |
| M1 | 60 | 30 | 30 | ||
| MX | 45 | 19 | 26 | ||
| unknown | 5 | 3 | 2 | ||
| stage | Stage I/II | 220 | 113 | 107 | 0.307 |
| Stage III/IV | 176 | 85 | 91 | ||
| unknow | 11 | 6 | 5 | ||
| venous invasion | no | 225 | 114 | 111 | 0.513 |
| yes | 140 | 72 | 68 | ||
| NA | 42 | 18 | 24 | ||
| lymphatic invasion | no | 263 | 133 | 130 | 0.487 |
| yes | 88 | 45 | 43 | ||
| NA | 56 | 26 | 30 | ||
| New event | no | 319 | 164 | 155 | 0.192 |
| yes | 88 | 40 | 48 | ||
| New event time (days) | 791.17±712.61 | 806.11±674.50 | 773.75±748.61 | 0.379 | |
| survival status | alive | 319 | 160 | 159 | |
| dead | 88 | 44 | 44 | 0.538 | |
| survival time (days) | 887.73±751.11 | 886.15±695.39 | 889.32±803.21 | 0.133 |
Clinicopathological parameters were compared between training set and validation set by the χ2 test and the unpaired two-tailed Student’s t test. The P value refers to the χ2 test except for new event time and survival time. The P value of new event time and survival time refers to the unpaired two-tailed Student’s t test. CC, colon cancer; T, tumor; N, node; M, metastasis.