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BACKGROUNDObesity is a strong risk factor for hyperglycemia. However, the performance of waist-to-height ratio (WHtR), waist-to-hip ratio (WHR), waist circumference (WC) and body mass index (BMI) in predicting hyperglycemia was inconclusive; and ethnic differences may exist in the associations.OBJECTIVEThe objective was to compare WHtR, WC, WHR and BMI in predicting hyperglycemia among Chinese adults and identify optimal cut-off points.DESIGNA community-based prospective cohort study was conducted during 2004-2007 in Nanjing China. WHtR, WC, WHR, BMI, fasting capillary blood glucose, covariates and potential confounders were assessed at baseline and third year of follow-up.RESULTSThe overall cumulative incidence of hyperglycemia was 8.6% (8.0% in men, 9.0% in women). Relative risks across quartiles of WHtR, WHR, WC and BMI were 1.00, 1.33, 1.67, 3.40; 1.00, 2.38, 2.53, 3.87; 1.00, 1.29, 1.75, 2.90; and 1.00, 1.45, 1.49, 2.41 in men, and 1.00, 1.24, 1.99, 2.87; 1.00, 1.14, 2.28, 2.66; 1.00, 1.32, 1.80, 3.14; and 1.00, 1.39, 1.50, 2.08 in women, respectively. p for trend was <0.01 for each marker and gender. Adjustment for potential confounders did not change such dose-response relationships materially. ROC analysis indicated that WHtR had the best sum of sensitivity and specificity compared to the other measures .Optimal cut-offs for WHtR, WHR, WC and BMI were 0.51, 0.92, 85 and 24 for men, while 0.55, 0.86, 82 and 25 for women, respectively.CONCLUSIONWHtR, WHR, WC and BMI were positively associated with subsequent hyperglycemia. WHtR and WC best predicted hyperglycemia among Chinese adults.

Comparison of anthropometric indices of obesity in predicting subsequent risk of hyperglycemia among Chinese men and women in Mainland China.