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...

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...

Alaska Native populations are experiencing a nutrition transition and a resulting decrease in diet quality. The present study aimed to develop a quantitative food frequency questionnaire to assess the diet of the Yup'ik people of Western Alaska. A cross-sectional survey was conducted using 24-hour recalls and the information collected served as a basis for developing a quantitative food frequen...

conclusions four major dietary patterns were identified in the present studied population that can be used to provide tangible dietary advice for the elderly. results four major dietary patterns were identified in the studied population: 1) healthy pattern, characterized by a higher intake of vegetables, tomato and tomato sauce, vegetable oil, olive, and fruits; 2) unhealthy pattern, characteri...

background: earlier forms of food frequency questionnaire (ffq) used in iran have extensive lists of foods, traditional categories and food-based design, mostly with the interviewer-administered approach. the aim of the current paper is to describe the development of a dish-based, machine-readable, semi-quantitative food frequency questionnaire (dfq). methods: within the framework of the study ...

patients and methods a total of 553 pregnant females, aged 18 - 40 years, during the third trimester of pregnancy, were included in the study. statistical analysis of pearson correlation coefficient, analysis of covariance for logistic regression and factor analysis were performed using spss software version 23. results in this study, pearson correlation coefficients between test and retest for...