| Fitness-for-purpose of dietary survey duration: a case-study with the assessment of exposure to ochratoxin A. | |
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MedLine Citation:
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PMID: 16223553 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The duration of food consumption survey may have a marked effect on estimates of usual nutrient intakes in individuals and groups. This arises from a high degree of within-person variability in food intakes, primarily on a day-to-day basis. Both the level of observation-populations versus individuals-and the desirable level of precision decide upon the 'fitness-for-purpose' of dietary survey duration. Though similar from a methodological standpoint, the question was rarely addressed in the case of non-nutrients. Our work aims at estimating the number of days of food records needed for the assessment of usual intakes of food chemicals as a function of research purpose. Focusing on the French population exposure to food mycotoxin ochratoxin A, we implement a range of well-established methods borrowed from the field of nutrient intakes assessment. Our results on OTA show that: (a) at the population level, as low as three days give satisfactory distributional estimates; yet, the implementation of variance reduction methods is of particular relevance when higher percentiles of exposure are at stake; (b) the estimation of individual usual intakes based on food records is behind practical possibilities, which calls for alternative options such as biomarkers of exposure. |
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Authors:
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E Counil; P Verger; J-L Volatier |
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Publication Detail:
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Type: Evaluation Studies; Journal Article Date: 2005-10-11 |
Journal Detail:
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Title: Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association Volume: 44 ISSN: 0278-6915 ISO Abbreviation: Food Chem. Toxicol. Publication Date: 2006 Apr |
Date Detail:
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Created Date: 2006-03-13 Completed Date: 2006-05-16 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8207483 Medline TA: Food Chem Toxicol Country: England |
Other Details:
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Languages: eng Pagination: 499-509 Citation Subset: IM |
Affiliation:
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INRA-Mét@risk, Méthodologie d'analyse du risque alimentaire, INA P-G, 16 rue Claude Bernard, 75231 Paris Cedex 5, France. Emilie.Counil@inapg.inra.f |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Diet Surveys* Female Food Contamination* Food Habits* France Humans Male Models, Statistical Ochratoxins / analysis, toxicity* Time Factors |
| Chemical | |
Reg. No./Substance:
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0/Ochratoxins; 303-47-9/ochratoxin A |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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