Table 1. Clinical characteristics and related cohort grouping of 526 patients with ccRCC.
| Variates | Type | Overall cohorts (n = 526) | Training cohorts (n = 264) | Testing cohorts (n = 262) | P value |
|---|---|---|---|---|---|
| Age | <=60 years | 264(50.19%) | 135(51.14%) | 129(49.24%) | 0.7275 |
| >60 years | 262(49.81%) | 129(48.86%) | 133(50.76%) | ||
| Gender | Female | 183(34.79%) | 97(36.74%) | 86(32.82%) | 0.3944 |
| Male | 343(65.21%) | 167(63.26%) | 176(67.18%) | ||
| Grade | G1-G2 | 239(45.44%) | 124(46.97%) | 115(43.89%) | 0.631 |
| G3-G4 | 279(53.04%) | 137(51.89%) | 142(54.2%) | ||
| Unknown | 8(1.52%) | 3(1.14%) | 5(1.91%) | ||
| Stage | I–II | 318(60.46%) | 164(62.12%) | 154(58.78%) | 0.4872 |
| III–IV | 208(39.54%) | 100(37.88%) | 108(41.22%) | ||
| M | M0 | 418(79.47%) | 207(78.41%) | 211(80.53%) | 0.0709 |
| M1 | 78(14.83%) | 36(13.64%) | 42(16.03%) | ||
| Unknown | 30(5.7%) | 21(7.95%) | 9(3.44%) | ||
| N | N0 | 238(45.25%) | 117(44.32%) | 121(46.18%) | 0.9085 |
| N1 | 16(3.04%) | 8(3.03%) | 8(3.05%) | ||
| Unknown | 272(51.71%) | 139(52.65%) | 133(50.76%) | ||
| T | I–II | 336(63.88%) | 177(67.05%) | 159(60.69%) | 0.1535 |
| III–IV | 190(36.12%) | 87(32.95%) | 103(39.31%) |