Fig. 6

The performance of the nomogram. A-C The calibration curves of 1-, 3-, and 5-year showed more appropriate calibration ability in PGC patients, in which the blue dotted lines represent the ideal predictive model, and the red solid line represents the nomogram model. D-F Time-dependent ROC curve analysis for the nomogram of the 1-, 3-, and 5-year survival of PGC patients. G-I The DCA curves showed a comparable net benefit if the threshold probability for a patient or a doctor was within a range from 0 to 0.80 during 1, 3, and 5 years. The y-axis represents the net benefit. The x-axis represents the predicted overall survival probability. The oblique smooth solid line represents a kind of hypothesis that all patients survive in the corresponding time. The horizontal smooth solid line represents the hypothesis that none of the patients survive for more than 1 year. G-I Time-dependent ROC curve analysis for the nomogram at 1, 3, and 5 years in PGC patients