Skip to Main Content
An official website of the United States government

ASA24 has been offline since October 27 for unplanned maintenance. We are working to restore access, but we do not yet have an estimated date for service to resume. We apologize for the extended disruption and its impact on your research.

Epidemiology and Genomics Research Program

ASA24® Versions from 2011-2014 (no longer available)

ASA24

Researchers can no longer register studies to use or collect data using versions of the Automated Self-Administered 24-Hour (ASA24) Dietary Assessment Tool released between 2011 and 2014. There are no plans to develop a new version of ASA24-Kids.

Information about previous versions of ASA24

ASA24-2014, ASA24-Kids-2014, ASA24-Canada-2014, ASA24-Kids-2012, and ASA24-2011:

  • Used version 4.1 of USDA's Food and Nutrient Database for Dietary Studies (FNDDS) or the Canadian Nutrient File (CNF) 2015 to estimate nutrient intakes;
  • Used version 2.0 of the USDA's MyPyramid Equivalents Database* (MPED) and the USDA's Center for Nutrition Policy and Promotion's MPED Addendum to estimate intakes of dietary guidance-based food groups (nutritionists on the ASA24 team imputed values for nine food codes for which MyPyramid Equivalents were not assigned by USDA);
  • Included optional modules to query the location of meals, with whom meals were eaten, and television and computer use during meals;
  • Included an optional module to query supplement intakes based on supplements reported in the 2007-2008 National Health and Nutrition Examination Survey (NHANES) for U.S. versions or the Licensed Natural Product Database & National Health and Nutrition Examination Survey (NHANES) Dietary Supplements Database 2007-2008 for the Canadian version; and
  • Allowed participants to complete food recalls in English or Spanish (ASA24-Canada-2014 is only available in English).

*Not available for ASA24-Canada-2014

The ASA24-2014 and ASA24-Canada-2014 versions (not ASA24-2011) also included options to:

  • Query the source of each food consumed to provide information on where foods are obtained (i.e., grocery store, farmer's market, vending machine, etc.);
  • Query different 24-hour time frames: midnight to midnight of the previous day or the past 24-hours starting with the Respondent's first login; and
  • Require participants to complete recalls in one sitting with breaks of no longer than 30 minutes.

Note to users of the ASA24-2011 and ASA24-Kids-2012: Data collected using ASA24-2011 or ASA24-Kids-2012 and ASA24-2014 are comparable as both use the same nutrient and food group databases. Most of the changes between the ASA24-2011 and 2014 versions were related to modifications of the user interface.

Learn more about:

More ASA24 resources


View a detailed comparison of all versions of ASA24

ASA24 is a registered trademark of HHS.

Last Updated: 29 Oct, 2026