Development of a model based on the age-adjusted Charlson comorbidity index to predict survival for resected perihilar cholangiocarcinoma

Figure 3 Calibration curves, receiver operating characteristic curves and decision curve. A and B: Calibration curves for predicting 1-yr overall survival in the training (A) and validation cohorts (B); C-F: Receiver operating characteristic curves (C and D) and decision curve analysis (E and F) for the prognostic model and 8^th American Joint Committee on Cancer staging system in the training (C and E) and validation cohorts (D and F). AJCC: American Joint Committee on Cancer; AUC: Area under the curve; OS: Overall survival.