BMI is a 4-digit numeric variable providing a measure of body mass index.
9998.0 = Blank
9999.0 = NIU (Not in Universe)

Description

BMI provides a measure of body mass index. Body mass index is a measure of obesity.

The formula for calculating BMI is based upon the individual's height (HEIGHT) and weight (WEIGHT). BMI = (weight in pounds * 703)/height in inches squared. For adults (age 20 and over), an individual with a BMI under 18.5 is considered underweight. A BMI between 18.5 and 24.9 is considered normal, BMI between 25.0 and 29.9 is considered overweight, and an individual with a BMI of 30 or more is considered obese.

The definitions of overweight and obesity differ for adults and children and teens. For a complete definition of BMI groups for adults see: Adult BMI. For a complete definition of BMI groups for children and teens see: Children and Teen BMI.

BMI was calculated with information gathered during the Eating and Health Module of the ATUS interview. Analyses that include BMI should use EHWT as the weight.

Comparability

This variable is comparable across years.

Universe

Availability

• 2006-2008, 2014-2016, 2022-2023

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