When citing a WWEIA, NHANES data file, documentation, codebook, or frequencies:

U.S. Department of Agriculture, Agricultural Research Service, Beltsville Human Nutrition Research Center, Food Surveys Research Group (Beltsville, MD) and U.S. Department of Health and Human Services, Centers for Disease Control and Prevention, National Center for Health Statistics (Hyattsville, MD). What We Eat in America, NHANES YYYY-YYYY Type of File: Descriptive Name of File (FILENAME). (YYYY, Month). Available from: http://www.cdc.gov/remainder_of_url.xxx [accessed MM/DD/YY].

For data files, use the release month and year given with the associated codebook.

Examples:

U.S. Department of Agriculture, Agricultural Research Service, Beltsville Human Nutrition Research Center, Food Surveys Research Group (Beltsville, MD) and U.S. Department of Health and Human Services, Centers for Disease Control and Prevention, National Center for Health Statistics (Hyattsville, MD). What We Eat in America, NHANES 2003-2004 Data: Dietary Interview - Total Nutrients Intakes -- First Day (DR1TOT_C). (2006, September). Available from: http://www.cdc.gov/nchs/about/major/nhanes/nhanes2003-2004/dr1tot_c.xpt  [accessed 09/11/06].

U.S. Department of Agriculture, Agricultural Research Service, Beltsville Human Nutrition Research Center, Food Surveys Research Group (Beltsville, MD) and U.S. Department of Health and Human Services, Centers for Disease Control and Prevention, National Center for Health Statistics (Hyattsville, MD). What We Eat in America, NHANES 2003-2004 Documentation: Dietary Interview - Individual Foods -- First Day (DR1IFF_C). (2006, September). Available from: http://www.cdc.gov/nchs/data/nhanes/nhanes_03_04/dr1iff_c.pdf [accessed 09/11/06].

When you use WWEIA, NHANES data in an analysis, please include among your keywords:

• What We Eat in America
• WWEIA
• National Health and Nutrition Examination Survey
• NHANES 
• the year span of the data release cycles used (e.g., 2001-2002)