Development of Food Frequency Questionnaire.

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Development and Validation of a Food Frequency Questionnaire for Assessing Dietary Calcium in Children

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The food frequency questionnaire.

To the Editors: Of course we agree with Kristal et al. (1) that validity is an issue of degree rather than a dichotomy and that multiple methods will usually be useful when evaluating validity because a perfect standard is rarely available. However, their examples based on face validity, construct validity, and predictive validity do not provide evidence that food frequency questionnaires shoul...

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development and validation of a food frequency questionnaire for assessing dietary calcium in children

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ژورنال

عنوان ژورنال: The Japanese Journal of Nutrition and Dietetics

سال: 1998

ISSN: 1883-7921,0021-5147

DOI: 10.5264/eiyogakuzashi.56.313