Fig. 4

A The AUC of the predictive model was 0.936 [95% CI 0.904–0.969], with a sensitivity, specificity and accuracy of 0.835, 0.918, and 0.874 in the training dataset, respectively. B The AUC of the predictive model was 0.931 [95% CI 0.889–0.973], with a sensitivity, specificity, and accuracy of 0.735, 1.000, and 0.851 in the testing dataset, respectively