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ASSESSMENT OF FOOD INTAKES - ARE WE MEASURING WHAT PEOPLE EAT

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Livingstone, Barbara (1995) ASSESSMENT OF FOOD INTAKES - ARE WE MEASURING WHAT PEOPLE EAT. BRITISH JOURNAL OF BIOMEDICAL SCIENCE, 52 (1). pp. 58-67. [Journal article]

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Abstract

Accurate assessments of dietary intake are a pre-requisite for assessing the relationships between diet and health. However, the quantification of errors in dietary data has remained largely undetected because of the absence of techniques to verify dietary survey methodology. Recent studies using doubly-labelled water estimates of total energy expenditure to validate self-reported energy intakes have demonstrated that the majority of these are systematically biased towards under-estimation of usual requirements. Bias is unlikely to be consistent in population studies. Subjects who report the highest energy intake tend to estimate their requirements more accurately than these who report low intakes. Mechanisms for cross-checking energy intake data against estimated energy requirements have been developed and provide limited guidance for checking the physiological plausibility of reported intakes, with special emphasis on under-reporting. In the absence of independent validation the evaluation of dietary survey data should be approached with caution.

Item Type:Journal article
Faculties and Schools:Faculty of Life and Health Sciences
Faculty of Life and Health Sciences > School of Biomedical Sciences
Research Institutes and Groups:Biomedical Sciences Research Institute > Northern Ireland Centre for Food and Health (NICHE)
ID Code:4257
Deposited By:Dr Tracy McCaffrey
Deposited On:13 Jan 2010 16:27
Last Modified:13 Jan 2010 16:27

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