The National Cancer Institute'S Dietary Assessment Primer

The efficacy of all dietary studies, whether aimed at monitoring a populationu0027s diet, understanding diet and health relationships, or evaluating the effect of an intervention, depends on appropriate assessment of intakes. Determining the most suitable dietary instrument for a particular study can be a challenge and is dependent upon a number of considerations, including the specific research question, dietary components of interest, study design, and target population. The National Cancer Institute has developed an online resource to provide guidance on the selection of appropriate dietary assessment methodologies for characterizing the intakes of a group or groups and to outline various considerations for the use of each. The Dietary Assessment Primer describes the major types of self-report instruments; provides guidance on using the instruments alone or in combination to address different research questions; compares key features of each instrument; explains validity, measurement error, and calibration...