Fig. 5

(A) Univariate Analysis: Forest plot showing the hazard ratios (HR) and 95% confidence intervals (CI) for each variable in the univariate Cox proportional hazards model. The variables include riskscore, age, gender, T stage, and N stage. Each row represents a variable, with the HR indicated by the point estimate and the CI by the horizontal line. (B) Multivariate Analysis: In the multivariate Cox model, riskScore, Age, T stage, and N stage exhibited a significant correlation with prognosis(P<0.05). (C) Nomogram: Nomogram for predicting the probability of overall survival at 1, 3, and 5 years. The nomogram includes points assigned to each variable (N stage, T stage, age, and risk score), which are summed to predict survival probabilities. (D) Calibration Plot: Calibration plot comparing the predicted survival probabilities from the nomogram with the actual observed survival probabilities at 1, 3, and 5 years. The diagonal line represents perfect calibration, and the plotted points show the agreement between predicted and observed probabilities. (E)Independent Prognosis ROC: Receiver Operating Characteristic (ROC) curves for the independent prognosis model at 1, 3, and 5 years. The Area Under the Curve (AUC) values are provided for each time point(AUC>0.6).