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dc.contributor.authorRennie, K.L.
dc.contributor.authorJebb, S.A.
dc.contributor.authorWright, A.
dc.contributor.authorCoward, W.A.
dc.date.accessioned2009-02-12T09:24:48Z
dc.date.available2009-02-12T09:24:48Z
dc.date.issued2005
dc.identifier.citationRennie , K L , Jebb , S A , Wright , A & Coward , W A 2005 , ' Secular trends in under-reporting in young people ' , British Journal of Nutrition , vol. 93 , no. 2 , pp. 241-247 . https://doi.org/10.1079/BJN20041307
dc.identifier.issn0007-1145
dc.identifier.otherPURE: 118527
dc.identifier.otherPURE UUID: 51782903-9e81-427a-816b-4a1184f52cfa
dc.identifier.otherdspace: 2299/2884
dc.identifier.otherScopus: 15944391694
dc.identifier.urihttp://hdl.handle.net/2299/2884
dc.descriptionOriginal article can be found at: http://journals.cambridge.org/action/displayJournal?jid=BJN Copyright The Authors. DOI: 10.1079/BJN20041307
dc.description.abstractNational survey data show that reported energy intake has decreased in recent decades despite a rise in the prevalence of obesity. This disparity may be due to a secular increase in under-reporting or a quantitatively greater decrease in energy expenditure. This study examines the extent of under-reporting of energy intake in the National Diet and Nutrition Survey (NDNS) in young people aged 4–18 years in 1997 using published equations to calculate estimated energy requirements. It explores secular changes by comparison with the Diets of British School Children (DBSC) survey in 10–11- and 14–15-year-olds in 1983. In the NDNS, under-reporting (estimated energy requirements – energy intake) represented 21 % of energy needs in girls and 20 % in boys. The magnitude of under-reporting increased significantly with age (P<0·001) and was higher in overweight than lean individuals over 7 years of age. To compare reported energy intake in DBSC and NDNS, the estimated physical activity level from dietary records (dPAL=reported energy intake/predicted BMR) was calculated. If there were no under-reporting, dPAL would represent the subject's true activity level. However, dPAL from the NDNS was significantly lower than that from the DBSC by 8 % and 9 % in boys and girls for those aged 10–11 years, and by 14 % and 11 % for 14–15-year-olds respectively, reaching physiologically implausible levels in the 14–15-year-old girls (dPAL=1·17). If activity levels have remained constant between the two surveys, under-reporting has increased by 8–14 %. The evidence supports a secular trend towards increased under-reporting between the two surveys, but the precise magnitude cannot be quantified in the absence of historical measures of energy expenditure.en
dc.language.isoeng
dc.relation.ispartofBritish Journal of Nutrition
dc.rightsOpen
dc.subjectdoubly labelled water
dc.subjectdietary surveys
dc.titleSecular trends in under-reporting in young peopleen
dc.contributor.institutionDepartment of Allied Health Professions and Midwifery
dc.description.statusPeer reviewed
dcterms.dateAccepted2005
rioxxterms.versionofrecordhttps://doi.org/10.1079/BJN20041307
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue
herts.rights.accesstypeOpen


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