Document Detail

Fitness-for-purpose of dietary survey duration: a case-study with the assessment of exposure to ochratoxin A.
MedLine Citation:
PMID:  16223553     Owner:  NLM     Status:  MEDLINE    
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.
E Counil; P Verger; J-L Volatier
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Publication Detail:
Type:  Evaluation Studies; Journal Article     Date:  2005-10-11
Journal Detail:
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:
Created Date:  2006-03-13     Completed Date:  2006-05-16     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8207483     Medline TA:  Food Chem Toxicol     Country:  England    
Other Details:
Languages:  eng     Pagination:  499-509     Citation Subset:  IM    
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
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MeSH Terms
Diet Surveys*
Food Contamination*
Food Habits*
Models, Statistical
Ochratoxins / analysis,  toxicity*
Time Factors
Reg. No./Substance:
0/Ochratoxins; 303-47-9/ochratoxin A

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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