Table 5. The optimal cut-off and the Youden index.

Variables	Cut-off	Sensitivity	Specificity	Youden index
Age	58.500	0.682	0.603	0.285
CR	70.700	0.600	0.679	0.279
FBG	5.590	0.469	0.786	0.255
HDL-C	1.325	0.696	0.594	0.290
miR-125b	0.175	0.534	0.621	0.155

CR, creatinine; FBG, fasting blood glucose; HDL-C, fasting high-density lipoprotein cholesterol; TG, triglyceride. The value of each miRNA-125b means the relative mount calculated by 2^−Δct method.