Trends in national and state-level obesity in the USA after correction for self-report bias: analysis of health surveys

作者：Majid Ezzati · 发表于：Journal of the Royal Society of Medicine · 年份：2006 · DOI：10.1258/jrsm.99.5.250 · 被引用次数：170 · 研究领域：Health Promotion and Cardiovascular Prevention、Food Security and Health in Diverse Populations、Obesity and Health Practices

ObjectivesTo quantify population-level bias in self-reported weight and height as a function of age, sex, and the mode of self-report, and to estimate unbiased trends in national and state level obesity in the USA. DesignStatistical analysis of repeated cross-sectional health examination surveys (the National Health and Nutrition Examination Survey [NHANES]) and health surveys (the Behavioral Risk Factor Surveillance System [BRFSS]) in the USA. ResultsIn the USA, on average, women underreported their weight, but men did not. Young and middle-aged (565 years) adult men over-reported their height more than women of the same age. In older age groups, over-reporting of height was similar in men and women. Population-level bias in self-reported weight was larger in telephone interviews (BRFSS) than in-person interviews (NHANES). Except in older adults, height was over-reported more often in telephone interviews than in-person interviews. Using corrected weight and height in the year 2000, Mississippi (31%) and Texas (30%) had the highest prevalence of obesity for men; Texas (37%), Louisiana (37%), Mississippi (37%), District of Columbia (37%), Alabama (37%), and South Carolina (36%) for women. ConclusionsPopulation-level bias in self-reported weight and height is larger in telephone interviews than in-person interviews. Telephone interviews are a low-cost method for regular, nationally- and sub-nationally representative monitoring of obesity. It is possible to obtain corrected est...