Fig. 4

Identification of independent prognostic factors and establishment of the nomogram. a Univariate and multivariate Cox regression analyses to verify the prognostic values of various clinicopathological factors and risk scores. b A nomogram based on the prognostic signature consisting of risk score and clinical factors. c Calibration plot for evaluating the predictive accuracy of the nomogram at 1-, 3- and 5-year survival. d ROC analysis of the performance of the proteomic signature and clinicopathological factors