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Interpretation of data on dietary intake.

H A Guthrie

    Nutrition Reviews
    |February 1, 1989
    PubMed
    Summary

    Assessing dietary intake requires careful consideration of potential errors in food consumption data and nutrient analysis. Despite limitations, current systems provide a reasonable evaluation of nutritional status for groups and individuals.

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    Area of Science:

    • Nutrition Science
    • Dietary Assessment Methodology

    Background:

    • Interpreting dietary data assumes representativeness of actual intake and use of current food composition tables.
    • Potential sources of error and bias can affect the accuracy of food and nutrient intake information.

    Purpose of the Study:

    • To highlight potential sources of error and bias in dietary intake assessment.
    • To discuss the limitations of current dietary assessment systems.
    • To advocate for improved systems for food intake and nutritional status assessment.

    Main Methods:

    • Discussion of various potential errors in dietary data collection and analysis.
    • Review of limitations in food composition databases.
    • Examination of factors influencing nutrient bioavailability.

    Main Results:

    • Identified numerous potential errors including reporting inaccuracies, recording/coding mistakes, and limitations in food composition data.
    • Acknowledged challenges with imputed values and variability in nutrient content.
    • Highlighted the impact of diet on nutrient bioavailability and the use of abridged tables.

    Conclusions:

    • Current dietary assessment systems provide a reasonable, albeit imperfect, evaluation of nutritional adequacy for groups and individuals.
    • Further development of sophisticated systems is needed for more accurate food intake and nutritional status assessment.
    • The National Nutrition Monitoring and Related Research Act is crucial for advancing these systems.

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