Clinical utility
Decision Curve Analysis (DCA) is a new algorithm to calculate the net profit under different thresholds. DCA was used to calculate the potential clinical value of the new model and compared it with the traditional TNM staging system. In addition, according to the risk value calculated by the competitive risk model, the patients were divided into a high-risk group and a low-risk group by using the Youden index of the receiver operating characteristic curve (ROC) to take the best cut-offcut-off value. Kaplan–Meier (K-M) curve and Log-rank test were used to analyze the survival difference between the low-risk and high-risk groups.