Table 3.

The area under the curve and the optimum cut-off points of the body fat-measuring indices for diabetes.

Test variables	Area under the curve	95% confidence interval		Optimum cut-off point	Sensitivity (%)	Specificity (%)	Youden's index
		Lower bound	Upper bound
Total
BMI	0.629	0.600	0.658	25.51	54.02	66.23	0.2025
WC	0.669	0.643	0.695	86.00	69.85	56.10	0.2595
WHR	0.654	0.626	0.682	0.89	70.35	55.83	0.2618
WHtR	0.683	0.657	0.709	0.5337	71.11	57.96	0.2907
Male
BMI	0.629	0.581	0.676	25.99	56.49	67.37	0.2387
WC	0.639	0.593	0.685	87.00	75.97	46.48	0.2246
WHR	0.609	0.565	0.654	0.89	75.97	43.41	0.1939
WHtR	0.634	0.590	0.679	0.5137	79.22	42.80	0.2202
Female
BMI	0.633	0.596	0.669	25.49	50.41	69.67	0.2008
WC	0.701	0.670	0.732	84.00	76.23	56.78	0.3301
WHR	0.684	0.648	0.719	0.89	66.80	64.14	0.3094
WHtR	0.710	0.679	0.741	0.5337	77.05	57.29	0.3434