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Revista Española de Salud Pública

On-line version ISSN 2173-9110Print version ISSN 1135-5727


AGUIRRE-JAIME, Armando et al. Validation of a food intake frequency questionnaire adapted for the study and monitoring of the adult population of the Canary Islands, Spain. Rev. Esp. Salud Publica [online]. 2008, vol.82, n.5, pp.509-518. ISSN 2173-9110.

Background: The registering of eating habits requires a valid and reliable method. The purpose of this study is to validate the food intake frequency questionnaire, CDC-FFQ, which is an adaptation of another questionnaire, in order to assess the nutrition of the adult population of the Canary Islands. Methods: The CDC-FFQ questionnaire was given to 1,067 individuals taken from the general population (GP) and to 106 university students, aged 19 to 30. The second group was surveyed also in three 24-hour follow-ups. The nutrients were compared according to the CDC-FFQ in the GP and university students. The correlations were estimated between the CDC-FFQ and the follow-ups for nutrients and groups of foods and the concordance of the intakes of nutrients and groups of foods in the extreme quintiles, for the university students. Results: The mean values between nutrients of the CDC-FFQ between the GP, university students and the general population with university studies showed no significant differences except for vitamin B12 (p=0.004) and vitamin D (p=0.005). Correlations between the CDC-FFQ and the mean of the three follow-ups were obtained in the 0.202-0.601 range between nutrients adjusted by calories consumed in the case of the university students. By groups of foods, the correlations ranged between 0.243-0.542 for the CDC-FFQ and the follow-ups. The concordance of nutrients ranged between 39% and 100% and for groups of foods, between 41% and 100%. Conclusions: The CDC-FFQ questionnaire is valid for classifying the subjects in the relative ranges of their level of intake of foods and nutrients and, therefore, it could be useful in epidemiological studies with a diet assessment in the adult population of the Canary Islands.

Keywords : Validation studies; Food; Nutrition; Nutrition Assessment; Nutrition Surveys; Spain.

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