Model building
REGRESSION
After univariate and multivariate logistic regression analysis, only pathologic type was identified as an independent predictive value and used to build further models (Univariate and multivariate analysis of clinical data.Receiver operating characteristic curve analysis of three models in the training set The accuracy, sensitivity, specificity, PPV, and NPV of the radiomics-only, clinical-only, and radiomics-clinical combined models in the training and validation cohorts were compared and illustrated in Model predictive performance.Performance comparisons of the radiomics (train cohort + validation cohort), clinical (train cohort+validation cohort) and combined models (train cohort + validation cohort) in terms of ACC, sensitivity, specificity, PPV, and NPV.R_train: training cohort of Radiomics signature, R_test: validation cohort of Radiomics signature, C_train: training cohort of clinical signature, C_test: testing cohort of clinical signature, combine train: training cohort of radiomics-clinical combined signature, combine test: validation cohort of radiomics-clinical combined signature.ACC, Accuracy; NPV, negative predictive value; PPV, positive predictive value.