Fig. 3From: A novel tool for predicting the risk of central lymph node metastasis in patients with papillary thyroid microcarcinoma: a retrospective cohort studyROC curve for the predictive of preoperative ultrasonographic features. A The predictive model of CLNM in training cohort was accurate and discriminating, with AUC of 0.774. B The predictive model of CLNM in validation cohort was accurate and discriminating, with AUC of 0.709. AUC = area under ROC curve; ROC = receiver operating characteristicBack to article page