ASA24 is a freely available Web-based tool that enables automated self-administered 24-hour recalls. 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. Two Respondent Web sites are currently available: ASA24-2011 (available in English and Spanish) and ASA24-Kids-2012 (available in English). Further information on the Respondent and Researcher Web sites is provided in the sections below.

ASA24™ is a trademark of DHHS.