Document Detail


Validation analysis of probabilistic models of dietary exposure to food additives.
MedLine Citation:
PMID:  14555358     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The validity of a range of simple conceptual models designed specifically for the estimation of food additive intakes using probabilistic analysis was assessed. Modelled intake estimates that fell below traditional conservative point estimates of intake and above 'true' additive intakes (calculated from a reference database at brand level) were considered to be in a valid region. Models were developed for 10 food additives by combining food intake data, the probability of an additive being present in a food group and additive concentration data. Food intake and additive concentration data were entered as raw data or as a lognormal distribution, and the probability of an additive being present was entered based on the per cent brands or the per cent eating occasions within a food group that contained an additive. Since the three model components assumed two possible modes of input, the validity of eight (2(3)) model combinations was assessed. All model inputs were derived from the reference database. An iterative approach was employed in which the validity of individual model components was assessed first, followed by validation of full conceptual models. While the distribution of intake estimates from models fell below conservative intakes, which assume that the additive is present at maximum permitted levels (MPLs) in all foods in which it is permitted, intake estimates were not consistently above 'true' intakes. These analyses indicate the need for more complex models for the estimation of food additive intakes using probabilistic analysis. Such models should incorporate information on market share and/or brand loyalty.
Authors:
M B Gilsenan; R L Thompson; J Lambe; M J Gibney
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Validation Studies    
Journal Detail:
Title:  Food additives and contaminants     Volume:  20 Suppl 1     ISSN:  0265-203X     ISO Abbreviation:  Food Addit Contam     Publication Date:  2003 Oct 
Date Detail:
Created Date:  2003-10-13     Completed Date:  2004-02-10     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8500474     Medline TA:  Food Addit Contam     Country:  England    
Other Details:
Languages:  eng     Pagination:  S61-72     Citation Subset:  IM    
Affiliation:
IEFS-Institute of European Food Studies, Trinity College, Dublin, Ireland. european.foodstudies@tcd.ie
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MeSH Terms
Descriptor/Qualifier:
Databases, Factual
Diet
Eating
Food Additives / administration & dosage*
Humans
Models, Statistical*
Reproducibility of Results
Chemical
Reg. No./Substance:
0/Food Additives

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


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