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NWS-16 Data Details

NWS-16 Increase the contribution of whole grains to the diets of 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
Yes
Measure
ounce equivalents per 1,000 calories (age adjusted—see Comments)
Baseline (Year)
0.3 (2001-2004)
Target
0.6
Target-Setting Method
Modeling
Numerator
Daily intake of ounce equivalents of whole grains from a first day 24 hour recall among persons aged 2 years and over
Denominator
Caloric intake from a first day 24 hour recall divided by 1000 among persons aged 2 years and over
Data Collection Frequency
Periodic
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. Ounce equivalents were calculated using the USDA MyPyramid Equivalents Database.

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

Age Adjustment

This Indicator uses Age-Adjustment Groups:

  • Total: 2-5, 6-11, 12-19, 20-29, 30-39, 40-49, 50-59, 60-69, 70-79, 80+
  • Sex: 2-5, 6-11, 12-19, 20-29, 30-39, 40-49, 50-59, 60-69, 70-79, 80+
  • Race/Ethnicity: 2-5, 6-11, 12-19, 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: 2-5, 6-11, 12-19, 20-29, 30-39, 40-49, 50-59, 60-69, 70-79, 80+
  • Country of Birth: 2-5, 6-11, 12-19, 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: 2-5, 6-11, 12-19, 20-29, 30-39, 40-49, 50-59, 60-64
  • Marital Status: 20-29, 30-39, 40-49, 50-59, 60-69, 70-79, 80+
  • Veteran Status: 17-29, 30-39, 40-49, 50-59, 60-69, 70-79, 80+
  • Obesity Status, Adults: 20-29, 30-39, 40-49, 50-59, 60-69, 70-79, 80+
Changes Between HP2010 and HP2020
Healthy People 2010 objective 19-7 assessed the proprotion of the population meeting the 2000 Dietary Guidelines for Americans (DGA) to consume six daily servings of grain products, with at least three being whole grains. Healthy People 2020 objective NWS-16 was modified to focus only on the contribution of whole grains to American diets, and to take into account the 2010 DGA recommendations for consumption of whole grains which are expressed in ounce equivalents relative to caloric intake. The objective tracks mean daily intake 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

In 2014, the baseline (2001-2004) 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. In addition, the data by obesity status were revised due to an error in reading the initial baseline data into DATA2020 database. The data for children and adults had accidentally been switched.

References

Additional resources about the objective.

  1. WWEIA, NHANES, and the MyPyramid Equivalents Database.
    http://www.ars.usda.gov/Services/docs.htm?docid=23870