Design and quality control issues related to dietary assessment, randomized clinical trials and meta-analysis of field-based studies in developing countries1 From: The Journal of Nutrition | Date: May 1, 2003| Author: | Copyright American Institute of Nutrition May 2003. Provided by ProQuest LLC.Copyright information

ABSTRACT The essential design and quality control aspects of dietary assessment, randomized controlled trials (RCT) in developing countries and their subsequent meta-analysis are reviewed. Dietary assessment protocols consist of three stages: measurement of food intakes using a method appropriate for the study objectives, calculation of nutrient intakes and finally an evaluation of their nutrient adequacy. The latter may involve: 1) assessment of dietary diversity (average number of different foods consumed per day) and selected indices of dietary quality such as intakes of animal source ...

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