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Consequences of utilizing reduced nutrient data bases for estimating dietary adequacy.

L W Hoover, R P Dowdy, K V Hughes

    Journal of the American Dietetic Association
    |March 1, 1985
    PubMed
    Summary

    Reducing the USDA Nutrient Data Base (NDB) for the Nationwide Food Consumption Survey (NFCS) caused minor changes in nutrient intake calculations. Nutritional adequacy predictions remained similar across different NDB sizes, except for infants.

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    Area of Science:

    • Nutrition Science
    • Food Science
    • Dietary Assessment

    Background:

    • The Nationwide Food Consumption Survey of Individuals 1977-1978 (NFCS) utilized the USDA Nutrient Data Base (NDB) for dietary intake calculations.
    • Data reduction of the NDB may impact the accuracy of nutritional assessments.

    Purpose of the Study:

    • To evaluate the impact of reducing the USDA Nutrient Data Base (NDB) on nutrient intake calculations for the Nationwide Food Consumption Survey (NFCS).
    • To assess variations in nutrient intake and nutritional adequacy predictions using reduced NDB versions.

    Main Methods:

    • Reduced the USDA Nutrient Data Base (NDB) to two levels.
    • Analyzed 3-day dietary records from 7,914 individuals using original and reduced NDBs.
    • Calculated nutrient intake for energy and 14 nutrients across 22 sex-age groups.

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  • Employed Analysis of Variance (ANOVA) to evaluate variations in nutrient intake.

    • Main Results:

    • NDB reductions led to significant alterations in calculated nutrient intake and interactions with sex-age groups.
    • The magnitude of differences in nutrient levels was generally small between original and reduced NDBs.
    • A notable exception was observed in the under-1-year sex-age group, showing greater impact.

    Conclusions:

    • Reduced NDBs can be used for NFCS analysis with minimal impact on overall trends of nutritional adequacy.
    • Predictions of nutritional adequacy using smaller data bases align with those from the original NDB.
    • Careful consideration of the under-1-year age group is warranted when using reduced NDBs.