Validation of dietary patterns assessed with a food-frequency questionnaire
نویسندگان
چکیده
منابع مشابه
Development 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 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 recalls...
متن کاملValidation of a food-frequency questionnaire for measurement of nutrient intake in a dietary intervention study.
OBJECTIVE To validate a 171-item semi-quantitative food-frequency questionnaire (FFQ) for measurement of nutrient intake in an intervention trial based on walnut supplementation. DESIGN AND SETTING Free-living adults from Southern California were randomly assigned to either an intervention (walnut-supplemented) or a control diet. The prescribed 6-month intervention was > or = 28 g of walnuts ...
متن کاملFood and nutrient intakes assessed with dietary records for the validation study of a self-administered food frequency questionnaire in JPHC Study Cohort I.
We present here the survey methods and basic results of dietary records which were used as reference values in the present validation study of a self-administered food frequency questionnaire (FFQ) for the 5-year follow-up survey of the JPHC study. A semi-weighed dietary record was kept for four seven consecutive days in each of the four seasons in 3 areas, i.e., Iwate, Akita, and Nagano, and f...
متن کاملRelative validity of a food frequency questionnaire to identify dietary patterns in an adult Mexican population.
Objective: To examine the validity of a semi-quantitative food frequency questionnaire (SFFQ) to identify dietary patterns in an adult Mexican population. Materials and methods: A 140-item SFFQ and two 24-hour dietary recalls (24DRs) were administered. Foods were categorized into 29 food groups used to derive dietary patterns via factor analysis. Pearson and intraclass correlations coefficien...
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ژورنال
عنوان ژورنال: The American Journal of Clinical Nutrition
سال: 1999
ISSN: 0002-9165,1938-3207
DOI: 10.1093/ajcn/70.3.422