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vol.33 issue3ASSESSMENT OF THE GLOBAL DIET QUALITY OF PRESCHOOL CHILDREN AT A NON-PROFIT DAY CARE CENTER: COMPARISON AT TWO TIME POINTSMETHODS FOR THE DERIVATION OF A CHECKLIST IN STUDIES OF DIETARY INTAKE author indexsubject indexarticles search
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Revista chilena de nutrición

On-line version ISSN 0717-7518

Abstract

LOPEZ B, Laura; LONGO N, Elsa; CARBALLIDO P, María  and  DI CARLO, Paula. VALIDATION OF FOOD PHOTOGRAPHS AS A TOOL TO QUANTIFY PORTION SIZE. Rev. chil. nutr. [online]. 2006, vol.33, n.3, pp.480-487. ISSN 0717-7518.  http://dx.doi.org/10.4067/S0717-75182006000500004.

The aim of this research was to validate the usefulness of a food photograph atlas for the estimation of food portion sizes. The instrument was tested in 76 adults, of whom 34 were professionals and 42 had only primary school education. Selected foods were weighed before its intake and later on a questionnaire was made about food portion sizes using the food photograph atlas. Total corrected answers were 60.9% in the university group and 52.7% in the primary school group (p=0.07). Correlation between real weight and the estimated weight for the total observations was good [r =0.722 (p=0.003)] and percentage of variation between both weights had a range of - 29% to + 256%. Food photograph models give an approximation to food portion sizes, so they are useful instruments to be use in nutritional surveys

Keywords : Food photograph atlas; food portion sizes; nutritional surveys; food models.

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