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Assessing nutrient intake with an abbreviated dietary interview.

T Byers, J Marshall, R Fiedler

    American Journal of Epidemiology
    |July 1, 1985
    PubMed
    Summary

    Assessing nutrient intake in large studies can be simplified. A brief dietary history of just 15-20 foods may suffice for epidemiologic research on nutrient-disease links.

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    Area of Science:

    • Epidemiology
    • Nutrition Science
    • Dietary Assessment

    Background:

    • Epidemiologic studies require efficient methods for assessing dietary nutrient intake.
    • Traditional extensive food frequency questionnaires are time-consuming and expensive.
    • Developing abbreviated methods is crucial for large-scale nutritional research.

    Purpose of the Study:

    • To determine the minimum number of foods needed to accurately estimate nutrient intake in epidemiologic studies.
    • To evaluate the feasibility of using abbreviated dietary histories for nutrient assessment.
    • To identify key foods contributing significantly to nutrient variability.

    Main Methods:

    • Utilized data from 1,682 individuals interviewed with an extensive food frequency dietary history.
    • Constructed nutrient indices for vitamins A and C, dietary fiber, fat, protein, and total calories.
    • Analyzed the contribution of 128 foods to overall nutrient intake variability.

    Main Results:

    • A small subset of foods explained a large proportion of the variability in nutrient intake within the population.
    • Nutrient indices derived from a limited number of foods showed significant correlation with those from extensive histories.
    • As few as 15-20 food items could adequately estimate specific nutrient intakes.

    Conclusions:

    • Abbreviated dietary histories are a viable and efficient tool for nutrient assessment in epidemiologic research.
    • Minimal food lists can effectively capture nutrient intake variability, reducing time and cost.
    • This approach facilitates testing associations between disease outcomes and single nutrient intakes.

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