Validity and reliability of a dish-based semi-quantitative food frequency questionnaire for assessment of energy and nutrient intake among Iranian adults
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DOI: 10.1186/s13104-020-04944-3
Abstract: Objective This study aimed to assess the validity and reliability of a dish-based, semi-quantitative food frequency questionnaire (DFFQ) for epidemiological studies in Iran. The DFFQ included 142 items (84 foods and 58 mixed dishes) which… read more here.
Keywords: dish based; validity reliability; based semi; validity ... See more keywords