National Health and Nutrition Examination Survey
What We Eat in America, DHHS-USDA Dietary Survey Integration
New nationwide dietary intake data for the years 2003-2004 are now available for public use. The data was collected in What We Eat in America (WWEIA), the dietary interview component of the NHANES 2003-2004. WWEIA is conducted as a partnership between the U.S. Department of Agriculture (USDA) and the U.S. Department of Health and Human Services (DHHS). A number of additions and changes have occurred since the release of the WWEIA 2001-2002 data. One of the most important changes is the release of two days of intake data for each participant. The first day (Day 1) is collected in the Mobile Examination Center (MEC) and the second day (Day 2) is collected by telephone 3 to 10 days later. Most MEC participants (87 percent) have 2 days of complete and reliable intakes. Special sample weights were constructed to adjust for the additional dietary interview-specific non-response and the day of week of the dietary intake interview. These special weights are included in the dietary data files and should be used for analysis. WWEIA food intake data can be linked to health status data from other NHANES components, allowing researchers to explore relationships between dietary intakes and health status.
By clicking the link above, you are exiting the National Health and Nutrition Examination Survey (NHANES) website. The Agricultural Research Service (ARS) at USDA, is responsible for the data and documentation on its website. The content on the website is subject to change at any time without notice. Reasonable measures have been taken to ensure the accuracy of the information on the website. However, the accuracy of the information on the site is not guaranteed and data users should always check the programs and resulting data output carefully. Questions or problems pertaining to the ARS data and documentation or website should be directed to ARS, not NCHS.
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