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    Epidemiology. 1995 Jan;6(1):74-7.

    Reproducibility and validity of an extensive semiquantitative food frequency questionnaire among Greek school teachers.

    Source

    Department of Nutrition and Biochemistry, Athens School of Public Health, Greece.

    Abstract

    We evaluated the reproducibility and validity of a 190-item semiquantitative food frequency questionnaire (FFQ) to be used in a large prospective study in the Athens area of Greece. Eighty persons, 42 men and 38 women, ages 25-67 years, completed a self-administered FFQ, followed by monthly 24-hour diet recalls and then a second FFQ 1 year after the first. Correlation coefficients measuring the reproducibility and validity of the FFQ indicate that the questionnaire is reproducible and provides a reasonably reliable measure of intake for many nutrients over a period of 1 year.

    PMID:
    7888451
    [PubMed - indexed for MEDLINE]

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