Figure 4. E-MTAB-1980 cohort data validation of the constructed nomogram. (A, B) Univariate and multivariate Cox regression analyses were performed in the E-MTAB-1980 cohort to validate that the risk score could be used as an independent risk factor; (C) The same combination of age, tumour stage, and risk score was used to construct the nomogram in the E-MTAB-1980 cohort; (D–F) Calibration charts at 1, 3, and 5 years were used to further assess the accuracy of the nomogram. to further assess the accuracy of the nomogram; (G) ROC curves demonstrating the ability of this nomogram to assess patients’ prognosis at 1, 3, and 5 years.