[Dietary interview: a useful tool for data collection].

Dietary interview is a very useful tool in the process of evaluating the nutritional state of a person and, of course, in the process of dietary counseling, particularly in the case of patients suffering from chronic conditions. The complexity of gathering information at individual or population level requires different models of questionnaires and tools to enhance the identification of the data collected. The current paper is based on the consensus document about dietary interview, made by a working group created during the 1st Meeting of the Spanish Dietitians' and Nutritionists' Association held in Barcelona 2002.