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Short sleep and obesity in a large national cohort of Thai adults

Yiengprugsawan, Vasoontara; Banwell, Cathy; Thai Cohort Study Team; Seubsman, Sam-ang; Sleigh, Adrian

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OBJECTIVE To investigate the relationship between short sleep and obesity among Thai adults. DESIGN Both 4-year longitudinal and cross-sectional analyses of a large national cohort. SETTING Thai adults residing nationwide from 2005 to 2009. PARTICIPANTS Cohort members were enrolled as distance learners at Sukhothai Thammathirat Open University (N=87 134 in 2005 and 60 569 at 2009 follow-up). At 2005 baseline, 95% were between 20 and 49 years of age. MEASURES Self-reported sleep duration was...[Show more]

dc.contributor.authorYiengprugsawan, Vasoontara
dc.contributor.authorBanwell, Cathy
dc.contributor.authorThai Cohort Study Team
dc.contributor.authorSeubsman, Sam-ang
dc.contributor.authorSleigh, Adrian
dc.date.accessioned2016-01-27T23:14:16Z
dc.date.available2016-01-27T23:14:16Z
dc.identifier.issn2044-6055
dc.identifier.urihttp://hdl.handle.net/1885/95817
dc.description.abstractOBJECTIVE To investigate the relationship between short sleep and obesity among Thai adults. DESIGN Both 4-year longitudinal and cross-sectional analyses of a large national cohort. SETTING Thai adults residing nationwide from 2005 to 2009. PARTICIPANTS Cohort members were enrolled as distance learners at Sukhothai Thammathirat Open University (N=87 134 in 2005 and 60 569 at 2009 follow-up). At 2005 baseline, 95% were between 20 and 49 years of age. MEASURES Self-reported sleep duration was categorised as <6, 6, 7, 8 and ≥9 h. For all analyses (2005 and 2009 cross-sectional and 2005-2009 longitudinal), we used multinomial logistic regression models to assess the effect of sleep duration on abnormal body size (underweight, overweight-at-risk, obese). Results were adjusted for an array of relevant covariates. RESULTS At the last cohort follow-up in 2009, cross-sectional associations linked short sleep (<6 h) and obesity: adjusted ORs (AOR) =1.49, 95% CIs 1.32 to 1.68 for women and AOR=1.36, 95% CI 1.21 to 1.52 for men. The earlier cross-sectional baseline results in 2005 were quite similar. Longitudinal analysis (2005-2009) of 4-year incremental weight gain (5 to <10%, 10 to <20% and 20%+) strongly supported the short sleep-obesity relationship (significant AORs of 1.10, 1.30 and 1.69, respectively). CONCLUSIONS The results are internally consistent (2005 and 2009) and longitudinally confirmatory of a short sleep effect on obesity among Thai adults. Further research is needed to elucidate causal mechanisms underlying the sleep-obesity relationship.
dc.description.sponsorshipThis study was supported by the International Collaborative Research Grants Scheme with joint grants from the Wellcome Trust UK (GR071587MA) and the Australian National Health and Medical Research Council (268055) and as a Global Health grant from the NHMRC (585426).
dc.publisherBMJ Publishing Group
dc.rightsThis is an open-access article distributed under the terms of the Creative Commons Attribution Non-commercial License, which permits use, distribution, and reproduction in any medium, provided the original work is properly cited, the use is non commercial and is otherwise in compliance with the license. See: http://creativecommons.org/licenses/by-nc/2.0/ and http://creativecommons.org/licenses/by-nc/2.0/legalcode.
dc.sourceBMJ Open
dc.subjectKeywords: adult; article; body size; cohort analysis; confidence interval; controlled study; cross-sectional study; female; follow up; human; logistic regression analysis; longitudinal study; male; obesity; sleep; Thailand; underweight; weight gain
dc.titleShort sleep and obesity in a large national cohort of Thai adults
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume2
dc.date.issued2012-02-03
local.identifier.absfor111706
local.identifier.ariespublicationu4468094xPUB305
local.publisher.urlhttp://journals.bmj.com/
local.type.statusPublished Version
local.contributor.affiliationYiengprugsawan, Vasoontara, College of Medicine, Biology and Environment, CMBE Research School of Population Health, Natl Centre for Epidemiology & Population Health, The Australian National University
local.contributor.affiliationBanwell, Cathy, College of Medicine, Biology and Environment, CMBE Research School of Population Health, Natl Centre for Epidemiology & Population Health, The Australian National University
local.contributor.affiliationSeubsman, Sam-ang, College of Medicine, Biology and Environment, CMBE Research School of Population Health, Natl Centre for Epidemiology & Population Health, The Australian National University
local.contributor.affiliationSleigh, Adrian, College of Medicine, Biology and Environment, CMBE Research School of Population Health, Natl Centre for Epidemiology & Population Health, The Australian National University
local.contributor.affiliationThai Cohort Study Team, The, The Thai Cohort Study Team, Thailand
dc.relationhttp://purl.org/au-research/grants/nhmrc/268055
dc.relationhttp://purl.org/au-research/grants/nhmrc/585426
local.identifier.essn2044-6055
local.bibliographicCitation.issue1
local.bibliographicCitation.startpagee000561
local.bibliographicCitation.lastpagee000561
local.identifier.doi10.1136/bmjopen-2011-000561
dc.date.updated2016-02-24T11:08:50Z
local.identifier.scopusID2-s2.0-84857835817
local.identifier.thomsonID000315037200055
CollectionsANU Research Publications

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