GONI MATEOS, Leticia; ARAY MIRANDA, Maritza; MARTINEZ H., Alfredo    CUERVO ZAPATEL, Marta. Validation of a food groups frequency questionnaire based in an exchange system. []. , 33, 6, pp.1391-1399. ISSN 1699-5198.  https://dx.doi.org/10.20960/nh.800.

Introduction: The assessment of intake and eating habits become increasingly important to relate them to the risk of disease. In this sense, food frequency questionnaires (FFQ) are a common dietary tool used in both clinical practice and nutritional epidemiological studies. Objective: The aim of the study was the validation of a food groups frequency questionnaire (FGFQ) based on an exchange system, in relation to a 7 days food record (FR) used as reference. Methods: A total of 60 healthy adults (males and females) were recruited. To each one a dietitian applied the FGFQ to be validated and then gave instructions for completing the 7 days FR used as a reference standard. Energy and macronutrient distribution were calculated for both methods and appropriate statistical methods were applied. Results: The correlation coefficients comparing methods were found between r = 0.3 and r = 0.6 (p < 0.01), and the intraclass correlation coefficient between r = 0.2 and r = 0.6 (p < 0.01). The cross-classification analysis revealed that over 80% of individuals were classified into identical and contiguous quartiles from both dietary methods. Conclusions: The proposed FGFQ, based on an exchange system of 19 groups, has obtained comparable results to other similar models for assessing of energy and macronutrient distribution with a more rapid outcome.

: Validation; Food groups frequency questionnaire (FGFQ); Dietary record method; Dietary assessment; Nutrients.

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