Description of the data source, numerator, denominator, survey questions, and other relevant details about the national estimate.
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.
This Indicator uses Age-Adjustment Groups:
Any change to the objective text, baseline, target, target-setting method or data source since the Healthy People 2020 launch.
In 2013, 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. 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.
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