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Nutritional Epidemiology$
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Walter C. Willett

Print publication date: 1998

Print ISBN-13: 9780195122978

Published to Oxford Scholarship Online: September 2009

DOI: 10.1093/acprof:oso/9780195122978.001.0001

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Reproducibility and Validity of Food-Frequency Questionnaires

Reproducibility and Validity of Food-Frequency Questionnaires

(p.101) 6 Reproducibility and Validity of Food-Frequency Questionnaires
Nutritional Epidemiology

Walter Willett

Oxford University Press

This chapter deals with the approaches used to evaluate dietary questionnaires, the design of validation studies, and the analysis and presentation of data from validation studies. The interpretation of any study of diet and disease can be substantially enhanced by quantitative information on the validity of the method used to measure dietary intake. Unless the method employed has been previously studied with respect to validity in a similar population, any major dietary study should include a validation component.

Keywords:   food frequency questionnaire, validation studies, data analysis, validity, reproducibility

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