Table 3. Clinical characteristics of the training group TCGA and the testing group GSE39582.
| Clinical characteristics | Number and percentage of CRC patients | ||
| TCGA (%) | GSE39582 (%) | ||
| Total | 490 | 525 | |
| Age (years) | ≤68 | 264 (53.9%) | 270 (51.4%) |
| >68 | 226 (46.1%) | 255 (48.6%) | |
| Gender | Male | 266 (54.3%) | 285 (54.3%) |
| Female | 224 (45.7%) | 240 (45.7%) | |
| Stage-AJCC | I&II | 277 (56.5%) | 278 (53.0%) |
| III&IV | 213 (43.5%) | 247 (47.0%) | |
| T | T1-2 | 100 (20.4%) | 54 (10.3%) |
| T3-4 | 390 (79.6%) | 471 (89.7%) | |
| N | N0 | 286 (58.4%) | 290 (55.2%) |
| N1-3 | 204 (41.6%) | 235 (44.8%) | |
| M | M0 | 417 (85.1%) | 466 (88.8%) |
| M1 | 73 (14.9%) | 59 (11.2%) | |
*68 years old is the median age of 1,015 CRC patients in our study.