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Utilisation of primary total knee joint replacements across socioeconomic status in the Barwon Statistical Division, Australia 2006-7 : a cross-sectional study

Brennan, Sharon Lee, Stanford, Tyman, Wluka, Anita E., Page, Richard S., Graves, Stephen E., Kotowicz, Mark A., Nicholson, Geoffrey C. and Pasco, Julie A. 2012, Utilisation of primary total knee joint replacements across socioeconomic status in the Barwon Statistical Division, Australia 2006-7 : a cross-sectional study, BMJ Open, vol. 2, pp. 1-6.

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Title Utilisation of primary total knee joint replacements across socioeconomic status in the Barwon Statistical Division, Australia 2006-7 : a cross-sectional study
Author(s) Brennan, Sharon Lee
Stanford, Tyman
Wluka, Anita E.
Page, Richard S.
Graves, Stephen E.
Kotowicz, Mark A.
Nicholson, Geoffrey C.
Pasco, Julie A.
Journal name BMJ Open
Volume number 2
Start page 1
End page 6
Total pages 6
Publisher BMJ Group
Place of publication London, England
Publication date 2012-10-03
ISSN 2044-6055
Summary Objectives There are few Australian data that examine the association between total knee joint replacement (TKR) utilisation and socioeconomic status (SES). This study examined TKR surgeries with a diagnosis of osteoarthritis (OA) performed for residents of Barwon Statistical Division (BSD) for 2006–2007.

Design Cross-sectional.

Setting BSD, South-eastern Victoria, Australia

Participants All patients who underwent a TKR for OA, 2006–2007, and whose residential postcode was identified as within the BSD of Australia, and for whom SES data were available, were eligible for inclusion.

Primary outcome measure Primary TKR data ascertained from the Australian Orthopaedic Association National Joint Replacement Registry. Residential addresses were matched with the Australian Bureau of Statistics census data, and the Index of Relative Socioeconomic Disadvantage was used to determine SES, categorised into quintiles whereby quintile 1 indicated the most disadvantaged and quintile 5 the least disadvantaged. Age-specific and sex-specific rates of TKR utilisation per 1000 person-years were reported for 10-year age bands.

Results Females accounted for 62.7% of the 691 primary TKR surgeries performed during 2006–2007. The greatest utilisation rates of TKR in males was 7.6 observed in those aged >79 years, and in 10.2 in females observed in those aged 70–79 years. An increase in TKR was observed for males in SES quintile four compared to quintile 1 in which the lowest utilisation which was observed (p=0.04). No differences were observed in females across SES quintiles.

Conclusions Further investigation is warranted on a larger scale to examine the role that SES may play in TKR utilisation, and to determine whether any social disparities in TKR utilisation reflect health system biases or geographic differences.
Notes This article has been accepted for publication in Brennan SL, Stanford T, Wluka AE, et al. BMJ Open 2012;2:e001310. following peer review and can also be viewed on the journal’s website at www.bmjopen.bmj.com
Language eng
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 Refereed article in a scholarly journal
Copyright notice ©2012, The Authors
Persistent URL http://hdl.handle.net/10536/DRO/DU:30047630

Document type: Journal Article
Collections: School of Medicine
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