Table 3.

AUC, optimal cut-off values, sensitivity, specificity and Youden index of anthropometric indicators to predict high cardio-metabolic risk

	< 60 years					≥ 60 years
	AUC (95 %CI)	Cut-off value	Sensitivity	Specificity	Youden index	AUC (95 %CI)	Cut-off value	Sensitivity	Specificity	Youden index
Male
WC	0.74 (0.72–0.76)**	84.45	0.71	0.66	0.36	0.73 (0.70–0.75)**	84.75	0.65	0.71	0.36
BMI	0.74 (0.72–0.76)**	24.04	0.72	0.67	0.39	0.73 (0.70–0.75)**	23.24	0.70	0.63	0.34
WHR	0.73 (0.71–0.75)**	0.88	0.80	0.54	0.33	0.70 (0.68–0.73)**	0.90	0.71	0.61	0.32
WHtR	0.73 (0.71–0.75)**	0.51	0.65	0.69	0.34	0.73 (0.70–0.75)**	0.51	0.67	0.67	0.35
BAI	0.63 (0.61–0.66)**	25.12	0.61	0.58	0.19	0.64 (0.61–0.67)**	25.24	0.69	0.53	0.22
ABSI	0.61 (0.58–0.63)**	0.08	0.68	0.50	0.19	0.60 (0.57–0.62)**	0.08	0.51	0.67	0.18
BRI	0.73 (0.71–0.75)**	3.49	0.65	0.69	0.34	0.73 (0.70–0.75)**	3.46	0.72	0.63	0.35
Female
WC	0.73 (0.71–0.75)**	78.90	0.76	0.60	0.36	0.69 (0.67–0.71)**	78.85	0.77	0.51	0.28
BMI	0.73 (0.71–0.75)**	22.94	0.78	0.56	0.35	0.70 (0.67–0.71)**	23.73	0.62	0.65	0.28
WHR	0.71 (0.69–0.73)**	0.85	0.73	0.60	0.33	0.65 (0.63–0.67)**	0.88	0.66	0.57	0.23
WHtR	0.73 (0.71–0.75)**	0.51	0.71	0.64	0.35	0.68 (0.66–0.70)**	0.51	0.77	0.51	0.28
BAI	0.64 (0.62–0.66)**	27.89	0.76	0.44	0.21	0.61 (0.59–0.64)**	30.99	0.51	0.67	0.17
ABSI	0.62 (0.59–0.64)**	0.0763	0.63	0.56	0.18	0.55 (0.53–0.57)**	0.0781	0.71	0.39	0.10
BRI	0.73 (0.71–0.75)**	3.47	0.71	0.64	0.35	0.68 (0.66–0.70)**	3.60	0.77	0.51	0.28

**P value < 0.001: the inter-group difference of AUCs under the ROC curve; high cardio-metabolic risk: greater than or equal to three risk factors