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NWS-18 Data Details

NWS-18 Reduce consumption of saturated fat in the population aged 2 years and older

About the Data

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

National Data Source
National Health and Nutrition Examination Survey (NHANES); Centers for Disease Control and Prevention, National Center for Health Statistics (CDC/NCHS)
Changed Since the Healthy People 2020 Launch
mean percentage of total daily calorie intake (age adjusted—see Comments)
Baseline (Year)
11.3 (2003-2006)
Target-Setting Method
Daily energy intake from saturated fat from a first day 24 hour recall among persons aged 2 years and over
Total daily energy intake from a first day 24 hour recall among persons aged 2 years and over
Data Collection Frequency
Comparable Healthy People 2010 Objective
Adapted from HP2010 objective
Methodology Notes

What We Eat in America (WWEIA) is the dietary intake interview component of NHANES. WWEIA is conducted as a partnership between the Department of Agriculture (USDA) and the Department of Health and Human Services (DHHS). DHHS is responsible for the sample design and data collection, and USDA is responsible for the survey’s dietary data collection methodology, maintenance of the databases used to code and process the data, and data review and processing. USDA also funds the collection and processing of Day 2 dietary intake data, which are used to develop variance estimates and calculate usual nutrient intakes.

NHANES included the collection of 1 day of dietary data for all respondents through in-person 24 hour recalls and collection of a 2nd day 24-hour recall by telephone. For the analyses of mean intakes, only the first 24 hour recall is used. Each respondent was asked to recall the kinds and amounts of foods eaten at home and away from home during the previous day. Amounts of foods reported in household measures were then converted to gram amounts, and saturated fat intake estimated with the use of food composition files.

Breast-fed children are excluded from the numerator and denominator.

Age Adjustment

This Indicator uses Age-Adjustment Groups:

  • Total: 2-3, 4-8, 9-13, 14-18, 19-30, 31-50, 51-70, 71+
  • Sex: 2-3, 4-8, 9-13, 14-18, 19-30, 31-50, 51-70, 71+
  • Race/Ethnicity: 2-3, 4-8, 9-13, 14-18, 19-30, 31-50, 51-70, 71+
  • Educational Attainment: 25-30, 31-50, 51-70, 71+
  • Family Income: 2-3, 4-8, 9-13, 14-18, 19-30, 31-50, 51-70, 71+
  • Country of Birth: 2-3, 4-8, 9-13, 14-18, 19-30, 31-50, 51-70, 71+
  • Disability Status: 20-30, 31-50, 51-70, 71+
  • Health Insurance Status: 2-3, 4-8, 9-13, 14-18, 19-30, 31-50, 51-64
  • Marital Status: 20-30, 31-50, 51-70, 71+
  • Veteran Status: 17-18, 19-30, 31-50, 51-70, 71+
  • Obesity Status, Adults: 20-30, 31-50, 51-70, 71+
Changes Between HP2010 and HP2020
Healthy People 2010 objective 19-8 assessed the proportion of the population who met a specific daily intake recommendation for saturated fat (i.e., less than 10 percent of calories based on the 2000 Dietary Guidelines for Americans, DGA), while Healthy People 2020 objective NWS-18 tracks the population's mean percentage of daily energy intake from saturated fat so that the objective will not need to be modified with changes in the guidelines.

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

The baseline (2003-2006) and 2007-2010 data for this objective were revised due to a change in methodology. The data by age group and childhood obesity status are no longer age adjusted. The age adjustment groups were revised from those matching the age specific groups to the one listed above under Age Adjustment for consistency with other objectives using NHANES data. These changes did not affect the baseline value for the overall population so the target remains the same.


Additional resources about the objective.

  1. WWEIA, NHANES, and the MyPyramid Equivalents Database.