MEASUREMENT ERROR IN DIETARY ASSESSMENT - AN INVESTIGATION USING COVARIANCE STRUCTURE MODELS .1.

Authors
PLUMMER M CLAYTON D
Citation
M. Plummer et D. Clayton, MEASUREMENT ERROR IN DIETARY ASSESSMENT - AN INVESTIGATION USING COVARIANCE STRUCTURE MODELS .1., Statistics in medicine, 12(10), 1993, pp. 925-935
Citations number
14
Categorie Soggetti
Statistic & Probability","Medicine, Research & Experimental","Public, Environmental & Occupation Heath","Statistic & Probability
Journal title
Statistics in medicine → ACNP
ISSN journal
02776715
Volume
12
Issue
10
Year of publication
1993
Pages
925 - 935
Database
ISI
SICI code
0277-6715(1993)12:10<925:MEIDA->2.0.ZU;2-E
Abstract
Repeated measures of diet are analysed in an attempt to discover the m easurement error properties of various dietary assessment methods. It is customary in such studies to assume that one reference measurement is 'valid' (without error) but this assumption is not tenable. An alte rnative approach, widely used in social science, is to model the covar iance matrix of the repeated measures. We apply this methodology to as sessments of nitrogen intake, which is essentially equivalent to prote in intake.