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NWS-8 Data Details

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NWS-8 Increase the proportion of adults who are at a healthy weight

About the Data

Description of the data source, numerator, denominator, survey questions, and other relevant details about the national estimate.

Data Source: 
National Health and Nutrition Examination Survey
Changed Since the Healthy People 2020 Launch: 
Yes
Measure: 
percent (age adjusted—see Comments)
Baseline (Year): 
30.8 (2005–08)
Target: 
33.9
Target-Setting Method: 
10 percent improvement
Numerator: 

Number of persons aged 20 years and over with a body mass index (BMI) equal to or greater than 18.5 and less than 25.0

Denominator: 

Number of persons aged 20 years and over

Comparable Healthy People 2010 Objective: 
Retained from HP2010 objective
Data Collection Frequency: 
Periodic
Methodology Notes: 

    The NHANES obtains measured weights in an examination gown and heights without shoes. BMI is calculated by dividing weight in kilograms by the square of height in meters.

    The selection of a BMI cut point to establish the healthy weight range is based on the relationship of overweight or obesity to disease or death. A BMI of less than 25 has been accepted by numerous groups as the upper limit of the healthy weight range, because more disease occurs in most populations at or above this cut point. The lower cut point for the healthy weight range (BMI of 18.5) was selected to be consistent with national and international recommendations.

    Pregnant women are excluded from the numerator and denominator.

    Age Adjustment Notes: 

    This Indicator uses Age-Adjustment Groups:

    • Total: 20-29, 30-39, 40-49, 50-59, 60-69, 70-79, 80+
    • Sex: 20-29, 30-39, 40-49, 50-59, 60-69, 70-79, 80+
    • Race/Ethnicity: 20-29, 30-39, 40-49, 50-59, 60-69, 70-79, 80+
    • Educational Attainment: 25-29, 30-39, 40-49, 50-59, 60-69, 70-79, 80+
    • Family Income (percent poverty threshold): 20-29, 30-39, 40-49, 50-59, 60-69, 70-79, 80+
    • Country of Birth: 20-29, 30-39, 40-49, 50-59, 60-69, 70-79, 80+
    • Disability Status: 20-29, 30-39, 40-49, 50-59, 60-69, 70-79, 80+
    • Health Insurance Status: 20-29, 30-39, 40-49, 50-59, 60-64
    • Arthritis Status: 20-49, 50-59, 60-69, 70-79, 80+
    • Diabetes Status: 20-49, 50-59, 60-69, 70-79, 80+
    • Hypertension Status: 20-49, 50-59, 60-69, 70-79, 80+
    • Marital Status: 20-29, 30-39, 40-49, 50-59, 60-69, 70-79, 80+
    • Veteran Status: 20-29, 30-39, 40-49, 50-59, 60-69, 70-79, 80+

Revision History

Any change to the objective text, baseline, target, target-setting method or data source since the Healthy People 2020 launch.

Description of Changes Since the Healthy People 2020 Launch: 
In 2013, the method for computing the confidence intervals was revised from the standard Wald method to the Wald method on the log scale.

References

Additional resources about the objective

  1. National Institutes of Health. Clinical guideline on the identification, evaluation and treatment of overweight and obesity in adults - The Evidence Report. NIH. Obesity Research 6 (Suppl. 2):51S-209S, 1998.
  2. U.S. Department of Agriculture (USDA) and U.S. Department of Health and Human Services (HHS). Dietary Guidelines for Americans. 5th ed. USDA Home and Garden Bulletin No. 232, 2000.
  3. World Health Organization (WHO) Expert Committee. Physical Status: The Use and Interpretation of Anthropometry. Report of a WHO Expert Committee. WHO Technical Report Series: 854, 1992. Geneva, Switzerland: World Health Organization, 1995.