Model | Training cohort | Validation cohort | ||||
---|---|---|---|---|---|---|
C-index | 95% CI | P value | C-index | 95% CI | P value | |
Radiomics signature | 0.782 | 0.656–0.909 | 0.170 | 0.752 | 0.614–0.891 | 0.456 |
Clinical nomogram | 0.802 | 0.690–0.914 | 0.007 | 0.807 | 0.630–0.985 | 0.192 |
Radiomics nomogram | 0.817 | 0.693–0.942 | 0.009 | 0.913 | 0.833–0.992 | 0.019 |
AJCC staging system | 0.682 | 0.553–0.812 | Reference | 0.699 | 0.458–0.941 | Reference |