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The C-index of each model in the training and validation cohorts.
| Model | Training cohort | Validation cohort | ||
|---|---|---|---|---|
| C-Index | (95% CI) | C-Index | (95% CI) | |
| Clinical | 0.67 | 0.65-0.69 | 0.67 | 0.63-0.71 |
| Clinical + PET_RS | 0.70 | 0.68-0.72 | 0.70 | 0.66-0.74 |
| Clinical + CT_RS | 0.69 | 0.67-0.71 | 0.68 | 0.64-0.72 |
