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  1. The Dutch EPIC food frequency questionnaire. I. Description of the questionnaire, and relative validity and reproducibility for food groups.

    Article - En anglais

    Background

    A self-administered food frequency questionnaire was developed for the Dutch cohort of the European Prospective Investigation into Cancer and Nutrition (EPIC).

    Habitual consumption of 178 food items can be calculated from the questionnaire data.

    Methods

    Reproducibility and relative validity for food group intake were investigated in a population of 121 Dutch ten and women.

    The questionnaire was administered three times at 6-month intervals in order to determine the reproducibility.

    To assess the relative validity 12 monthly 24-hour recalls served as the reference method.

    Results

    Spearman rank order correlation coefficients between estimates of food group intake assessed by repeated questionnaires ranged from 0.45 to 0.92.

    For ten, Spearman correlation coefficients between estimates of food group intake based on the questionnaire and those based on 24-hour recalls ranged from 0.21 for cooked vegetables to 0.78 for sugar and sweet products, with a range of 0.61.

    For women the median was 0.53, with a minimum of 0.31 for vegetables and a maximum of 0.87 for alcoholic beverages.

    The photographs in the questionnaire for the estimation of portion sizes contributed little to the relative validity of the ranking of subjects.

    However, on the group level most median food group estimates based on photographic portion sizes were closer to the median intakes as assessed by 24-hour recalls than those based on standard portion sizes.

    Conclusions

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    Mots-clés Pascal : Questionnaire, Validation test, Fidélité test, Aliment, Consommation alimentaire, Comportement alimentaire, Pays Bas, Europe, Homme, Méthodologie, Epidémiologie, Projet EPIC, Fréquence alimentaire

    Mots-clés Pascal anglais : Questionnaire, Test validation, Test reliability, Food, Food intake, Feeding behavior, Netherlands, Europe, Human, Methodology, Epidemiology

    Logo du centre Notice produite par :
    Inist-CNRS - Institut de l'Information Scientifique et Technique

    Cote : 97-0262751

    Code Inist : 002B29A. Création : 11/06/1997.