Document Detail


Using biomarker data to adjust estimates of the distribution of usual intakes for misreporting: application to energy intake in the US population.
MedLine Citation:
PMID:  18313427     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
OBJECTIVE: It is now well-established that individuals misreport their dietary intake. We propose a new method (National Research Council-Biomarker [NRC-B]) for estimating population distributions of usual dietary intake from national survey 24-hour recall data, using additional biomarker data from an external study to adjust for such dietary misreporting. STATISTICAL ANALYSES PERFORMED: NRC-B is an extension of the NRC method, and is based upon two developed assumptions: the ratio of the mean of true intake to that of reported intake is equal in the survey and external biomarker study; and the ratio of the variance of true intake to that of reported intake is equal in these two studies. NRC-B adjusts the usual intake distribution both for within-person variation and for bias (underreporting) that occur with 24-hour recall reports. Using doubly labeled water ((2)H(2)(18)O) measurements from the Observing Protein and Energy Nutrition study, we applied NRC-B to data on energy intake for adults aged 40 to 69 years from two national surveys, the Continuing Survey of Food Intakes by Individuals and National Health and Nutrition Examination Survey. We compared the results with the NRC and traditional methods that used only the survey data to estimate dietary intake distributions. RESULTS: Estimated distributions from NRC-B and NRC were much narrower and less skewed than from the traditional method. However, unlike NRC, the median of the NRC-B based distribution was higher by 8% to 16% than the traditional method in our examples. CONCLUSIONS: The proposed method adjusts for the well-documented problem of underreporting of energy intake.
Authors:
Rivka Yanetz; Victor Kipnis; Raymond J Carroll; Kevin W Dodd; Amy F Subar; Arthur Schatzkin; Laurence S Freedman
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Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of the American Dietetic Association     Volume:  108     ISSN:  0002-8223     ISO Abbreviation:  J Am Diet Assoc     Publication Date:  2008 Mar 
Date Detail:
Created Date:  2008-03-03     Completed Date:  2008-04-29     Revised Date:  2008-05-28    
Medline Journal Info:
Nlm Unique ID:  7503061     Medline TA:  J Am Diet Assoc     Country:  United States    
Other Details:
Languages:  eng     Pagination:  455-64; discussion 464     Citation Subset:  AIM; IM    
Affiliation:
Department of Mathematics, Bar Ilan University, Ramat Gan, Israel.
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MeSH Terms
Descriptor/Qualifier:
Adult
Aged
Bias (Epidemiology)
Biological Markers
Body Mass Index
Body Water / chemistry,  metabolism
Deuterium
Diet*
Dietary Proteins / metabolism*
Energy Intake / physiology*
Female
Humans
Male
Mathematics
Mental Recall
Middle Aged
Nutrition Surveys
Population Surveillance / methods*
Self Disclosure*
United States
Grant Support
ID/Acronym/Agency:
CA-57030/CA/NCI NIH HHS; P30-ES09106/ES/NIEHS NIH HHS
Chemical
Reg. No./Substance:
0/Biological Markers; 0/Dietary Proteins; 7782-39-0/Deuterium
Comments/Corrections
Erratum In:
J Am Diet Assoc. 2008 May;108(5):890
Note: Kipnis, Victor [added]

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


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