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Related Experiment Videos

A reduced dietary questionnaire: development and validation.

G Block1, A M Hartman, D Naughton

  • 1Division of Cancer Prevention and Control, National Cancer Institute, Bethesda, MD 20892.

Epidemiology (Cambridge, Mass.)
|January 1, 1990
PubMed
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A new, shorter dietary questionnaire (60 items) accurately estimates nutrient intake, making it suitable for large-scale nutrition studies. This reduced version maintains strong correlations for micronutrients compared to the full questionnaire.

Area of Science:

  • Nutrition Science
  • Dietary Assessment
  • Epidemiology

Background:

  • Dietary assessment is crucial for understanding health and disease.
  • Full-length questionnaires can be time-consuming, limiting their use in large studies.
  • Developing shorter, validated tools is essential for efficient data collection.

Purpose of the Study:

  • To develop and validate a reduced version of the Block food frequency questionnaire.
  • To assess the accuracy of nutrient estimates from the reduced questionnaire compared to the full version and food records.
  • To determine the utility of the brief questionnaire for large-scale nutrition research.

Main Methods:

  • A 60-item reduced questionnaire was derived from a 98-item questionnaire by segment omission.

Related Experiment Videos

  • Nutrient estimates from the reduced questionnaire were correlated with the full version.
  • Validation was performed against multiple 4-day and 7-day food records in middle-aged women and older men.

    • Main Results:

    • The reduced questionnaire requires 17 minutes for administration, significantly less than the full version (30-35 minutes).
    • Macronutrient estimates were slightly lower than food records, but most micronutrient estimates were comparable.
    • Correlations with food records showed slight reductions for macronutrients but minimal change for micronutrients.

    Conclusions:

    • The reduced 60-item questionnaire provides a valid and efficient alternative for dietary assessment.
    • It is suitable for studies with time constraints, offering a good balance between accuracy and brevity.
    • This tool can facilitate large-scale nutrition research and epidemiological studies.