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The effects of timing on the cost-effectiveness of interventions for workers on sick leave due to low back pain

van Duijn, M., Eijkemans, M.J., Koes, B.W., Koopmanschap, M.A., Burton, A. Kim and Burdorf, A. (2010) The effects of timing on the cost-effectiveness of interventions for workers on sick leave due to low back pain. Occupational and environmental medicine, 67 (11). pp. 744-750. ISSN 1351-0711

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Abstract

Objective To examine the effects of different timing of structured interventions for workers on sick leave due to low back pain on return to work (RTW), and the consequences for costs and benefits. Methods Literature reviews were conducted to identify RTW curves and to estimate treatment effects, costs and benefits of structured interventions among workers on sick leave due to low back pain. RTW curves were mathematically described by Weibull functions and intervention effects, expressed by hazard ratios, were used to adjust these Weibull functions. Subsequently, these functions were used to evaluate the theoretical effects of interventions on reduction in number of days on sick leave and on the benefit-cost ratio. Results The cost-benefits of a RTW intervention among workers on sick leave due to low back pain were determined by the estimated effectiveness of the intervention, the costs of the intervention, the natural course of RTW in the target population, the timing of the enrolment of subjects into the intervention, and the duration of the intervention. Conclusion With a good RTW in the first weeks, the only early interventions likely to be cost-beneficial are inexpensive work-focused enhancements to early routine care, such as accommodating workplaces. Structured interventions are unlikely to have an additional impact on the already good prognosis when offered before the optimal time window at approximately 8 to 12 weeks. The generalisibility of the effectiveness of a RTW intervention depends on the comparability of baseline characteristics and RTW curves in target and source populations.

Item Type: Article
Subjects: R Medicine > RA Public aspects of medicine > RA0421 Public health. Hygiene. Preventive Medicine
Schools: School of Human and Health Sciences
School of Human and Health Sciences > Centre for Applied Psychological Research
School of Human and Health Sciences > Centre for Health and Social Care Research
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Depositing User: Kim Burton
Date Deposited: 05 Oct 2010 11:03
Last Modified: 15 Nov 2011 16:01
URI: http://eprints.hud.ac.uk/id/eprint/8743

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