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Shifting curves? Trends in thinness and obesity among Australian youth, 1985 to 2010

Hardy, L. L., Cosgrove, C., King, L., Venugopal, K., Baur, L. A. and Gill, T. 2012, Shifting curves? Trends in thinness and obesity among Australian youth, 1985 to 2010, Pediatric obesity, vol. 7, no. 2, pp. 92-100, doi: 10.1111/j.2047-6310.2011.00016.x.

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Title Shifting curves? Trends in thinness and obesity among Australian youth, 1985 to 2010
Author(s) Hardy, L. L.
Cosgrove, C.
King, L.
Venugopal, K.
Baur, L. A.
Gill, T.
Journal name Pediatric obesity
Volume number 7
Issue number 2
Start page 92
End page 100
Total pages 9
Publisher Wiley - Blackwell Publishing
Place of publication Oxford, England
Publication date 2012-04
ISSN 2047-6302
Keyword(s) obesity
Summary Objective To describe 25-year trends in the prevalence of ≤Grade 2 thinness and obesity among Australian children by sex, age and socioeconomic (SES) background.

Methods Cross-sectional surveys of New South Wales school-aged children aged 6.0–16.9 years conducted in 1985–1997–2004–2010 (n = 19 434). Height/weight were measured, and thinness and obesity were defined by international standards. SES was derived from children's residential postcode using the Australian Bureau of Statistics' Index of Relative Socioeconomic Disadvantage, most proximal to the survey year.

Results Since 1985, the prevalence of thinness has not varied by survey year. Age was not associated with thinness; however, thinness was lower among middle SES boys, compared with high SES (OR: 0.45, 95%CI: 0.21, 0.97). The prevalence of obesity trebled between 1985 and 1997 (1.7% vs. 5.1% P = 0.000); however, since 1997, obesity prevalence has not significantly changed. Since 1997, obesity was higher among younger compared with older girls (OR: 2.11, 95%CI: 1.48, 3.00) and SES was inversely associated with obesity in boys (OR: 2.05, 95%CI: 1.44, 2.92) and girls (OR: 1.86, 95%CI: 1.27, 2.74).

Conclusions The apparent plateau in child obesity is a welcome finding; however, the SES gradients are of concern. If the obesity stabilization is associated with the impact of multiple lifestyle behavioural interventions, the findings suggest obesity programmes have done ‘no harm’, but potentially the dose/delivery of interventions has not been sufficient or appropriate to reduce child obesity levels.
Language eng
DOI 10.1111/j.2047-6310.2011.00016.x
Field of Research 119999 Medical and Health Sciences not elsewhere classified
Socio Economic Objective 970111 Expanding Knowledge in the Medical and Health Sciences
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2012, Wiley
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Document type: Journal Article
Collection: School of Medicine
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Created: Thu, 30 Aug 2012, 09:25:44 EST

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