Automated Self-Administered 24-Hour (ASA24®) Dietary Assessment Tool


What is ASA24?

The Automated Self-Administered 24-hour (ASA24®) Dietary Assessment Tool is a free, web-based tool that enables multiple, automatically coded, self-administered 24-hour diet recalls and/or single or multi-day food records, also known as food diaries.  To learn more about 24-hour recalls and food records, visit NCI’s Dietary Assessment Primer.

The ASA24 system consists of a respondent website used to collect dietary intake data and a researcher website used to manage study logistics and obtain nutrient and food group data files.

Since ASA24 was released in 2009, more than 6,000 studies have registered to use ASA24 and more than 521,000 recall or record days have been collected as of January 2020.

The most current version of ASA24 in the United States is ASA24-2020 and in Canada is ASA24-2018. However, the ASA24-2016 version of ASA24 is still the most recent Australian version.

View a comparison of all versions of ASA24 to learn more about the underlying nutrient and food group databases, and other features.

ASA24 Webinar

This webinar from September 2020 provides information about ASA24-2020, the updated Respondent Nutrition Report, designs for a new researcher website, and a question and answer session.

View RecordingExternal Web Site Policy View Slides

ASA24 Listserv

Chat with other researchers about how they are using ASA24.

Join the ASA24 Listserv

ASA24 Demonstration Site

Complete a 24-hour dietary recall on the ASA24 demonstration website to become familiar with ASA24.

Go to Demo Site

Who can use ASA24?

Researchers can use ASA24 for epidemiologic, interventional, behavioral, or clinical research. Clinicians can use ASA24 to collect 24-hour recalls or food records from patients. Educators may have students use ASA24 to analyze nutrient intake or compare diet assessment methods.

Want to adapt ASA24?

Researchers interested in adapting the ASA24 system for a specific situation or country should contact the ASA24 Helpdesk.

How was ASA24 developed?

NCI developed ASA24 under contract with Westat, a social science research company. ASA24 adapted the United States Department of Agriculture’s (USDA) Automated Multiple-Pass Method (AMPM) and the Food Intake Recording Software System (FIRSSt), a self-administered recall tool originally developed for children by Dr. Tom Baranowski of Baylor College of Medicine.

The following NIH Institutes and Offices have funded ASA24:

  • National Cancer Institute (NCI)
    • Division of Cancer Control and Population Sciences (DCCPS)
    • Division of Cancer Epidemiology and Genetics (DCEG)
    • Division of Cancer Prevention (DCP)
  • NIH Office of Dietary Supplements (ODS)
  • National Heart, Lung, and Blood Institute (NHLBI)
  • National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
  • NIH Office of Behavioral and Social Sciences Research (OBSSR)
  • NIH Office of Disease Prevention (ODP)
  • National Institute of Child Health and Human Development (NICHD)
  • National Institute on Alcohol Abuse and Alcoholism (NIAAA)

ASA24 is a registered trademark of HHS.