Statistical analysis
REGRESSION
We used IBM SPSS 23.0 (Chicago, IL, USA) and RStudio 1.1.456 (R version 4.2.1) software for statistical analysis. All variables were converted into categorical variables and were described as absolute values. The chi-square test was used to compare categorical data. Cox proportional hazard model was performed to identify prognostic factors in both the univariate analysis and the multivariate analysis. The “randomForest” Package was used for developing the RF model. The “glm” function was used to develop the logistic regression. The “pROC” and “ROCR” packages were used to perform the ROC and evaluate the AUC. In this study, only when 