Figure 8 Calibration curves were used to evaluate the consistencies between actual survival and nomogram predicted survival. (A, B, C) Predicted cancer-specific survival in the validation cohort. (D, E, F) Predicted overall survival in the validation cohort.
Risk stratificationAccording to the nomograms we calculated the risk score of each patient. Meanwhile, the cutoff value of total score of CSS was 161 points, whereas that of OS was 43 points, as calculated by the td-ROC curve analysis. Later, patients were divided into low- and high-risk groups according to the cutoff values. The survival of high-risk patients from training cohort and validation cohort was poorer than that of low-risk patients, either based on the OS or CSS nomogram (Figure 9).