Assessment of the nomogram
The C‐index of the nomogram in the training and validation cohorts was 0.853 (95% CI, 0.787–0.920) and 0.806 (95% CI, 0.683–0.923), respectively, which revealed good predictive discrimination. The ROC curves were presented in Figure Receiver operating characteristic curves for estimating the risk of poor functional outcomes in the training cohort (A) and validation cohort (B).Calibration curves for the nomogram prediction in the training cohort (A) and validation cohort (B).