Accuracy of Body Mass Index Categories Based on Self-Reported Height and Weight Among Women in the United States

Objective The purpose of this study was to assess the accuracy of BMI categories based on self-reported height and weight in adult women. Methods BMI categories from self-reported responses were compared to categories measured during physical examination from women, age 18 or older, who participated in the National Health and Examination Survey, 1999–2004. We first examined strength of agreement using Cohen’s kappa, which, unlike sensitivity and...