[Power and the cutoff value of waist-to-height ratio predicting metabolism syndrome].

ABSTRACT

OBJECTIVE: In order to gain a simple, accurate, economical and family-used predictor for metabolism syndrome (MS), the predictive power and the cutoff value of waist-to-height ratio (WHtR) were explored. METHODS: A random cluster sampling was carried out in a county of Henan Province. Questionnaire, physical examination and biochemical tests were admitted to the adult inhabitants. Statistics software MedCalc was used to compare the areas under curve of ROC (AUC) between WHtR and WC on predicting metabolism abnormal components. The cutoff value of WHtR predicting MS was calculated. The characters of false positive and false negative population were analyzed. RESULTS: The AUC of WHtR were larger than WC in most of the metabolism abnormal components, though there was no statistical significance in some metabolic abnormality components. The cutoff value of WHtR was 0.51 in male, 0.52 in female and 0.52 in total. The means of components such as weight, BMI, WC in false positive group were higher than that in false negative group. However, the means of other components were lower. There were 80.78% people who had one metabolic abnormality component. There were 8. 59% people who had two components. CONCLUSION: The power of WHtR predicting one or more metabolic abnormality components was strong. It is a good predictor for MS. The cutoff value was 0.52.