Clinical associations
Decision curve analysis (DCA) was performed to assess the suitability of the nomograms for practical clinical use in contrast to the AJCC TNM stage. Nomograms were utilized to calculate the optimal cut-off value for the risk score via the ROC curve for each patient. After calculating the risk scores, patients in the training and validation cohorts were classified into high-risk and low-risk categories. To evaluate the survival differences, we utilized K-M survival curves to analyze both CSS and OS between these groups in both cohorts. Additionally, we investigated the impact of various surgery conditions on survival differences for both high-risk and low-risk patients.