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.
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