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Performance of models in the SEER training set
| Models | C-index (95% CI) | P* |
|---|---|---|
| Model 1 | 0.715 (0.679–0.751) | – |
| Model 2 | 0.697 (0.660–0.734) | < 0.001 |
| Model 3 | 0.698 (0.662–0.734) | < 0.001 |
*P values were obtained by comparing model 1 with model 2 and model 3, respectively
