Validity and reproducibility of a semi-quantitative food-frequency questionnaire for estimating calcium intake in Belgian preschool children
نویسندگان
چکیده
منابع مشابه
Validity and reproducibility of a semi-quantitative food-frequency questionnaire for estimating calcium intake in Belgian preschool children.
Relative validity and reproducibility of a semi-quantitative food-frequency questionnaire (FFQ) for measuring preschool children's usual Ca intake were assessed using parents or guardians as a proxy. Estimated diet records (EDR; 3 d) were used as the reference method and reproducibility was measured by repeated FFQ administrations 5 weeks apart. From 2095 preschool children (2.5-6.5 years) rand...
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ژورنال
عنوان ژورنال: British Journal of Nutrition
سال: 2006
ISSN: 0007-1145,1475-2662
DOI: 10.1079/bjn20051671