Accuracy of Waist to Hip Ratio Calculated by Bioelectric Impedance Device in the Ravansar Non-Communicable Disease Cohort Study

The objective of this study was to determine the accuracy of waist to hip ratio (WHR) measured by a bioelectric impedance analysis (BIA) device for 9965 participants in a cohort study. Waist and hip circumferences were measured manually using a nonstretched, flexible tape, and WHR was calculated. Waist circumference was measured at the level of the iliac crest 3 times, and the average of 3 measurements was recorded. Body composition analysis was...