Abstract
Food pictures are suitable visual tools for quantize food and nutrient consumption avoiding bias due to self-assessments.Objective: To determine the perception of food portion size and to establish the efficacy of food pictures for dietaries assessments. Material and methods: A food frequency questionnaire (FFQ) including 118 food items of daily consumption was applied to 30 adultsrepresentative of Córdoba. Argentina. population. Aniong severa¡ food models (paper maché, plastics) and pictures, thosc which more accuratcly filled the purpose were selected. 3 srnall, median and large standard portion size were determined. Data were evaluated with descripted statistics tools and Chi square adherence test. Results: The asscssment of 51 percent of the food was assayed in concordance with the refercnce size. In general, the remainder was overestimated. Thc 90 percent uf volunteers concluded that the pictures were the best visual resource. Conclusions: The photographic atlas of food is an useful material for quantize the dietary consumption, suitable for many types of dietaries assessments. In concl usion, com parison among pictures of three portions previously standardized for each food is highly recommendable.
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