Extensive evidence has demonstrated that 24-hour dietary recalls provide the
highest quality, least biased dietary data. Traditional 24-hour recalls,
however, are expensive and impractical for large-scale research because they
rely on trained interviewers and multiple administrations to estimate usual
intakes. As a result, researchers often make use of food frequency
questionnaires, which are less expensive but contain substantial error.
To address this challenge, investigators at NCI created the Automated
Self-administered 24-hour Recall (ASA24) system, a web-based tool that enables
multiple automated self-administered 24-hour recalls. ASA24 was developed under
contract with Westat, a social science research firm located in Rockville, MD,
and builds on the Food Intake Recording Software System (FIRSSt) developed by
Dr. Tom Baranowski of the Baylor College of Medicine. An External Working Group provided advice about
the needs and interests of potential users.
ASA24 consists of a Respondent Web site used to
collect recall data and a Researcher Web site used
to manage study logistics and obtain data analyses. A Beta version released in
August 2009 and supported through June 2012 was used by more than 200
researchers to collect more than 45,000 recalls. ASA24-2011 (released in
September 2011) and ASA24-Kids-2012 (released in September 2012) are now freely
available for use by researchers, clinicians, and teachers. This Web site
provides details on ASA24 and how to access and use it.
ASA24™ is a trademark of DHHS.