Are body mass index and waist circumference significant predictors of diabetes and prediabetes risk: Results from a population based cohort study

Table 4 Optimal cutoff points for general obesity and abdominal adiposity to predict incidence of pre-diabetes and diabetes

	Whole population		Men		Women
	BMI	WC	BMI	WC	BMI	WC
Diabetes
Cutoff point 1	28.5	86.25	26.2	89.7	28.6	84.3
Sensitivity	0.733	0.787	0.917	1	0.818	0.818
Specificity	0.579	0.495	0.477	0.356	0.53	0.5
Cutoff point 2	29	86.75	27	90	29	85
Sensitivity	0.6	0.766	0.75	0.917	0.667	0.758
Specificity	0.614	0.514	0.53	0.423	0.566	0.532
Pre-diabetes
Cutoff point 1	28.3	86	29.6	89.7	28.3	88.2
Sensitivity	0.528	0.787	0.294	0.706	0.583	0.45
Specificity	0.559	0.495	0.819	0.356	0.516	0.686
Cutoff point 2	29	87	30	90	29	89
Sensitivity	0.427	0.723	0.235	0.635	0.468	0.376
Specificity	0.614	0.453	0.826	0.409	0.564	0.718

BMI: Body mass index; WC: Waist circumference.