Figure 3.

ROC curve of prediction of clinical pregnancy with clinical characters. (A) ROC curve of Logistic Regression; (B) ROC curve of SVM; (C) ROC curve of Conditional Inference Tree; (D) ROC curve of Random Forest. Clinical characters included age, body mass index, serum estrogen level on the ET day, serum progesterone level on the ET day, endometrial thickness on the day of progesterone treatment, good-quality embryo rate and type of infertility (primary or secondary). SVM, support vector machine.