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Validation of simplified diet history questionnaire
N Takatsuka1, Y Kurisu, C Nagata
1Department of Public Health, Gifu University School of Medicine, Japan.
Journal of Epidemiology
|March 1, 1997
Summary
A simplified diet history questionnaire (DHQ) was developed to estimate long-term nutrient intake. This validated, easy-to-use method accurately assesses 17 selected nutrient intakes, aiding nutritional epidemiology.
Area of Science:
- Nutritional Epidemiology
- Dietary Assessment Methods
Background:
- Accurate estimation of long-term nutrient intake is crucial for nutritional epidemiology.
- Existing diet history questionnaires (DHQ) can be lengthy and complex.
Purpose of the Study:
- To simplify a comprehensive DHQ for efficient long-term nutrient intake assessment.
- To validate a simplified DHQ (SDHQ) against detailed dietary records.
Main Methods:
- A stepwise regression method was used to reduce 169 items from an initial DHQ.
- The simplified DHQ (SDHQ) was validated using Pearson's correlation coefficients with 12 one-day records from 31 volunteers.
Main Results:
- A 31-item SDHQ was developed, assessing 17 selected nutrients.
- Correlation coefficients between SDHQ and one-day records exceeded 0.30 for most nutrients, indicating good validity.
- Calorie adjustment improved correlation coefficients for some nutrient intakes.
Conclusions:
- The simplified DHQ (SDHQ) is a validated and user-friendly tool for assessing long-term nutrient intake.
- This method can improve efficiency in nutritional epidemiologic studies.