We used SPSS to draw ROC curves of AMH adding or not the LH/FSH ratio ​​for PCOS screening tests in test group (Fig. 1), and obtained the AUC of the ROC curve, the optimal AMH screening cutoff value, the corresponding sensitivity, specificity, Youden index, correct diagnosis rate, positive likelihood ratio, and negative likelihood ratio. This evidence concerns the gene PLOD1 and polycystic ovary syndrome.