To what extent do education and physical work load factors explain occupational differences in disability retirement due to knee OA? A nationwide register-based study in Finland

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Kontio , T , Viikari-Juntura , E & Solovieva , S 2018 , ' To what extent do education and physical work load factors explain occupational differences in disability retirement due to knee OA? A nationwide register-based study in Finland ' , BMJ Open , vol. 8 , no. 11 , 023057 . https://doi.org/10.1136/bmjopen-2018-023057

Title: To what extent do education and physical work load factors explain occupational differences in disability retirement due to knee OA? A nationwide register-based study in Finland
Author: Kontio, Tea; Viikari-Juntura, Eira; Solovieva, Svetlana
Contributor: University of Helsinki, Clinicum
Date: 2018-11
Language: eng
Number of pages: 11
Belongs to series: BMJ Open
ISSN: 2044-6055
URI: http://hdl.handle.net/10138/294735
Abstract: Objectives To examine the association of education and physical work load factors on the occupational differences in disability retirement due to knee osteoarthritis (OA). Design Longitudinal study. Setting Linkage of several nationwide registers and a job exposure matrix in Finland. Participants A total of 1 135 654 Finns aged 30-60 years in gainful employment were followed from 2005 to 2013 for full disability retirement due to knee OA. Primary and secondary outcome measures We calculated age-adjusted incidence rates and examined the association of occupation, education and physical work load factors with disability retirement using competing risk regression model. Disability retirement due to other causes than knee OA, old-age retirement and death were treated as competing risk. Results A total of 6117 persons had disability retirement due to knee OA. Women had a higher age-adjusted incidence rate than men (72 vs 60 per 100000 person-years, respectively). In men, a very high risk of disability retirement was found among construction workers, electricians and plumbers (HR 16.6, 95%CI 12.5 to 22.2), service workers (HR 12.7, 95%CI 9.2 to 17.4) and in women among building caretakers, cleaners, assistant nurses and kitchen workers (HR 15.5, 95%CI 11.7 to 20.6), as compared with professionals. The observed occupational differences were largely explained by educational level and noticeably mediated by physical work load factors in both genders. Conclusion Our observational study suggests that the risk of disability retirement among manual workers is strongly attributed to the physically heavy work.
Subject: epidemiology
public health
rheumatology
SICK LEAVE
FOLLOW-UP
PRIMARY OSTEOARTHRITIS
SOCIAL-CLASS
HEALTH
PENSION
RISK
HIP
PRODUCTIVITY
INEQUALITIES
3142 Public health care science, environmental and occupational health
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