Figure 8. Construction of a nomogram. (A) Univariate Cox regression (left) and multivariate Cox regression (right) indicated the risk score as an independent prognostic factor. (B) ROC curves of the risk score and clinical characteristics. (C) Nomogram consisting of risk score and clinical factors. (D) Calibration curve for validation of the nomogram for estimating survival at 1-, 3- and 5-years.