Fig. 3

Nomogram construction for predicting 1-, 2- and 3-year survival rate of PC. A-B Univariate Cox regression analysis and multivariate Cox regression analysis in training set. C Nomogram integrating seven IRGs-based risk score, age and N stage. D-F The calibration plot of the nomogram for coherence test between 1-, 2- and 3-year OS prediction and actual outcome in the training set, testing set and entire set. G-I Time-dependent ROC analysis of the nomogram in training set, testing set and entire set