A Simple Food Frequency Questionnaire for Japanese Diet-Part I. Development of the Questionnaire, and Reproducibility and Validity for Food Groups
نویسندگان
چکیده
منابع مشابه
[Reproducibility and validity of a food frequency questionnaire].
OBJECTIVE Methods to evaluate food consumption still need improvement. A study was conducted to verify the reproducibility and validity of a food frequency questionnaire (FFQ) among overweight adults. METHODS The study was carried out in a private university in São Paulo, Brazil. The study sample consisted of 146 individuals of both sex with body mass index =25 kg/m2 and age between 18 and 60...
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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 کاملRelative Validity and Reproducibility of a Food-Frequency Questionnaire for Estimating Food Intakes among Flemish Preschoolers
The aims of this study were to assess the relative validity and reproducibility of a semi-quantitative food-frequency questionnaire (FFQ) applied in a large region-wide survey among 2.5-6.5 year-old children for estimating food group intakes. Parents/guardians were used as a proxy. Estimated diet records (3d) were used as reference method and reproducibility was measured by repeated FFQ adminis...
متن کامل[Reproducibility and validity of a food consumption questionnaire for schoolchildren].
The aim of the study was to assess the reproducibility and validity of the previous day food questionnaire (PDFQ) for schoolchildren. The questionnaire is illustrated with 21 foods and was designed for use at group level. The participants were 131 schoolchildren aged eight to ten years who were studying full-time in a public school in a city of Southern Brazil, in 2005. Reproducibility was asse...
متن کاملvalidity and reproducibility of a food frequency questionnaire for assessment of fruit and vegetable intake in iranian adults
800x600 normal 0 false false false en-us x-none ar-sa microsoftinternetexplorer4 background: this study’s aim was to design and validate a semi-quantitative food frequency questionnaire (ffq) for assessment of fruits and vegetables (fv) consumption in adults of isfahan by comparing the ffq with dietary reference method and blood plasma levels of beta-carotene, vitamin c, and retinol. methods: t...
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ژورنال
عنوان ژورنال: Journal of Epidemiology
سال: 1999
ISSN: 0917-5040
DOI: 10.2188/jea.9.216