Fig. 5

The calibration curves for predicting the 5-year PFS and OS. a Prediction of PFS in the training cohort; b Prediction of PFS in the validation cohort; c Prediction of OS in the training cohort; d Prediction of OS in the validation cohort. The red line represents the nomogram’s performance. Red dots with blue bars represent the nomogram’s performance with 95% CI when applied to the observed surviving cohorts. The closer the nomogram curve is to the diagonal line, the more closely the predicted probability matches the actual probability