Average body mass index (BMI) based on self-reported height and weight are underreported unless adjusted
![Average body mass index (BMI) based on self-reported height and weight are underreported unless adjusted Bar chart showing average body mass index (BMI) based on measured and self-reported National Health and Nutrition Examination Survey data and unadjusted and adjusted self-reported scanner data.](/webdocs/charts/107827/bmi-fig01_768px.png?v=9432.3)
Most surveys to determine obesity rates using body mass index (BMI) rely on self-reported height and weight, which often can be misreported. Using both self-reported and measured heights and weights from the National Health and Nutrition Examination Survey (NHANES), self-reported information in scanner data can be adjusted to reduce measurement error.
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