Maternal Underreporting and the Willett Food Frequency Questionnaire
نویسندگان
چکیده
منابع مشابه
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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BACKGROUND Energy intake determined from self-reported dietary assessment methods may be underreported. Therefore, it is important that such methods be validated against another with known validity for energy intake or energy expenditure. METHODS We investigated potential underestimation of energy intake obtained from our semi-quantitative food-frequency questionnaire (FFQ) administered betwe...
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Virtually all epidemiologists (including us) who have investigated relationships between diet and chronic disease in the past 20 years have used food frequency questionnaires (FFQ) to assess diet and will continue to publish findings based on FFQ-derived data. However, in our editorial ‘‘Is it Time to Abandon the Food Frequency Questionnaire,’’ we addressed how we should conduct epidemiologic s...
متن کاملDevelopment and Validation of a Food Frequency Questionnaire for Assessing Dietary Calcium in Children
Background and Objectives: This study aimed to develop and validate a food frequency questionnaire (FFQ) for measuring calcium intake in 9-13 years old children in Tehran, Iran. Materials and Methods: A 56-item FFQ containing main contributors of calcium in Iranian diet was designed. Criterion validity of the calcium specific FFQ was evaluated through comparing its result with five 24-h recall...
متن کاملComparative validation of the Block, Willett, and National Cancer Institute food frequency questionnaires : the Eating at America's Table Study.
Researchers at the National Cancer Institute developed a new cognitively based food frequency questionnaire (FFQ), the Diet History Questionnaire (DHQ). The Eating at America's Table Study sought to validate and compare the DHQ with the Block and Willett FFQs. Of 1,640 men and women recruited to participate from a nationally representative sample in 1997, 1,301 completed four telephone 24-hour ...
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ژورنال
عنوان ژورنال: Proceedings of the Nutrition Society
سال: 2014
ISSN: 0029-6651,1475-2719
DOI: 10.1017/s0029665114000822