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Table 1 The comparison of clinicopathological factors between training cohort and validation cohort
| Characteristic | N | Patients | P | ||
|---|---|---|---|---|---|
| Training cohort | Validation cohort | ||||
| Total | 329 | 230 | 99 | ||
| Age (median, years) | 60.5 ± 10.41 | 50.0 ± 11.15 | |||
| Gender | Male | 234 | 161 | 73 | 0.511 |
| Female | 95 | 69 | 26 | ||
| Tumor site | Intrahepatic biliary tract | 29 | 16 | 13 | 0.089 |
| Liver | 300 | 214 | 86 | ||
| Tumor grade | Well | 8 | 8 | 0 | 0.058 |
| Moderate | 143 | 92 | 51 | ||
| Poor | 178 | 130 | 48 | ||
| Tumor size | ≤ 5 cm | 183 | 137 | 46 | 0.056 |
| > 5 cm | 146 | 93 | 53 | ||
| T stage (8th) | I | 137 | 93 | 44 | 0.203 |
| II | 108 | 83 | 25 | ||
| III | 62 | 38 | 24 | ||
| IV | 22 | 16 | 6 | ||
| LN metastasis | Absent | 291 | 204 | 87 | 0.852 |
| Present | 38 | 26 | 12 | ||
| TNM stage (8th) | I | 122 | 79 | 43 | 0.509 |
| II | 104 | 77 | 27 | ||
| III | 103 | 74 | 29 | ||
