منابع مشابه
Invited commentary: comparison of food frequency questionnaires.
In this issue, Wirfalt et al. (1) provide a useful comparison of three dietary assessment methods among a population of 101 obese women. The essential findings were mean correlations of 0.60 between a modified Willett/Harvard questionnaire and the Block/ National Cancer Institute (NCI) questionnaire, 0.34 between the Block/NCI questionnaire and 3-day recalls, and 0.36 between the Willett/Harvar...
متن کاملFood frequency questionnaires: not irrelevant yet.
To the Editors: Kristal et al. (1) contend that the food frequency questionnaire (FFQ) be abandoned in epidemiologic studies of cancer for three reasons: (a) a growing lack of consistency within and across studies of diet and cancer risk; (b) poor correlations between the FFQ’s measure of protein and total energy with urinary nitrogen excretion and doubly labeled water, respectively; and (c) on...
متن کاملDevelopment, validation and utilisation of food-frequency questionnaires - a review.
OBJECTIVE The purpose of this review is to provide guidance on the development, validation and use of food-frequency questionnaires (FFQs) for different study designs. It does not include any recommendations about the most appropriate method for dietary assessment (e.g. food-frequency questionnaire versus weighed record). METHODS A comprehensive search of electronic databases was carried out ...
متن کاملAccuracy of postal questionnaires.
Dear Sir, Having recently completed the data interpretation of a postal questionnaire of 'all' Otolaryngologists in the British Isles, we read with interest the recent correspondence on the subject of the accuracy of this means of gathering information. (November 1989, 1103), and of the validity of the numbers questioned and responding. Like the correspondents, we also had great difficulty in c...
متن کاملNew technologies applied to food frequency questionnaires: a current perspective.
The food frequency questionnaires are widely used in epidemiological researches like dietary assessment method. Traditionally, they have been self-administered in paper but the use of information and communication technologies has led to develop Internet and computerized food frequency questionnaires. It is the objective of this article to offer a global perspective of the new technologies appl...
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ژورنال
عنوان ژورنال: The American Journal of Clinical Nutrition
سال: 2000
ISSN: 0002-9165,1938-3207
DOI: 10.1093/ajcn/72.5.1234