Fig. 5

Receiver operating characteristic (ROC) curves, decision curve analysis (DCA) curves and calibration curves for upper ESCA. ROC curves for 3-year OS of patients with upper ESCA in the training cohort (a) and validation cohort (b). ROC curves for 5-year OS of patients with upper ESCA in the training cohort (c) and validation cohort (d). Decision curves for 3-year OS of patients with upper ESCA in the training cohort (e) and validation cohort (f). Decision curves for 5-year OS of patients with upper ESCA in the training cohort (g) and validation cohort (h). Calibration curves for 3-year OS of patients with upper ESCA in the training cohort (i) and validation cohort (j). Calibration curves for 5-year OS of patients with upper ESCA in the training cohort (k) and validation cohort (l).