Table 1 Baseline characteristics of patients with clear cell renal cell carcinoma
Dataset | Training cohort (n = 551) | Testing cohort (n = 237) | Validation cohort Ⅰ (n = 296) | Validation cohort Ⅱ (n = 187) | Validation cohort Ⅲ (n = 234) | Validation cohort Ⅳ (n = 156) |
|---|---|---|---|---|---|---|
Age (year) | 56.1 ± 11.1 | 54.0 ± 12.1 | 57.2 ± 12.6 | 57.3 ± 11.4 | 59.2 ± 11.0 | 60.0 ± 12.5 |
Sex | ||||||
Male | 365 | 164 | 183 | 123 | 162 | 103 |
Female | 186 | 73 | 113 | 64 | 72 | 53 |
Side | ||||||
Right | 262 | 116 | 141 | 100 | 112 | 86 |
Left | 289 | 121 | 155 | 87 | 122 | 70 |
Diameter | 5.72 ± 1.07 | 5.70 ± 1.17 | 5.96 ± 1.13 | 5.87 ± 1.22 | 6.17 ± 1.39 | 5.49 ± 0.94 |
Surgical procedure | ||||||
Nephron-sparing surgery | 344 | 155 | 149 | 107 | 51 | 112 |
Radical nephrectomy | 207 | 82 | 147 | 80 | 183 | 44 |
Pathological grade | ||||||
Ⅰ | 127 | 69 | 20 | 22 | 33 | 20 |
Ⅱ | 339 | 129 | 195 | 131 | 40 | 90 |
Ⅲ | 64 | 31 | 69 | 29 | 83 | 40 |
Ⅳ | 15 | 3 | 5 | 4 | 77 | 6 |
Not available | 6 | 5 | 7 | 1 | 1 | 0 |
Pathological T-stage | ||||||
T1b | 435 | 185 | 230 | 126 | 153 | 129 |
T2a | 56 | 26 | 45 | 18 | 56 | 4 |
T3a | 60 | 26 | 21 | 43 | 25 | 23 |
