Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/61352
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Type: Journal article
Title: Determinants of self-reported medicine underuse due to cost: A comparison of seven countries
Author: Kemp, A.
Roughead, E.
Preen, D.
Glover, J.
Semmens, J.
Citation: Journal of Health Services Research & Policy, 2010; 15(2):106-114
Publisher: Royal Society of Medicine Press Ltd.
Issue Date: 2010
ISSN: 1355-8196
1758-1060
Statement of
Responsibility: 
Anna Kemp, Elizabeth Roughead, David Preen, John Glover, James Semmens
Abstract: Objectives: To compare the predictors of self-reported medicine underuse due to cost across countries with different pharmaceutical subsidy systems and co-payments. Methods: We analysed data from a 2007 survey of adults in Australia, Canada, Germany, the Netherlands, New Zealand (NZ), the United Kingdom (UK) and the United States (US). The predictors of underuse were calculated separately for each country using multivariate poisson regression. Results: Reports of underuse due to cost varied from 3% in the Netherlands to 20% in the US. In Australia, Canada, NZ, the UK and the US, cost-related underuse was predicted by high out-of-pocket costs (RR range 2.0–4.6), below average income (RR range 1.9–3.1), and younger age (RR range 3.9–16.4). In all countries except Australia and the UK, history of depression was associated with cost-related underuse (RR range 1.2–4.1). In Australia, Canada, Germany, the UK and the US lack of patient involvement in treatment decisions was associated with cost-related underuse (RR range 1.2–1.4). In Australia, Canada and NZ, indigenous persons more commonly reported underuse due to cost (RR range 2.1–2.9). Conclusions: Cost-related underuse of medicines was least commonly reported in countries with the lowest out-of-pocket costs, the Netherlands and the UK. Countries with reduced co-payments or cost ceilings for low income patients showed the least disparity in rates of underuse between income groups. Despite differences in health insurance systems in these countries, age, ethnicity, depression, and involvement with treatment decisions were consistently predictive of underuse. There are opportunities for policy makers and clinicians to support medicine use in vulnerable groups.
Keywords: Humans; Health Care Surveys; Poisson Distribution; Patient Compliance; Developed Countries; Adolescent; Adult; Aged; Middle Aged; Prescription Fees; Financing, Personal; Female; Male; Young Adult
Rights: © 2010 Royal Society of Medicine Press
RMID: 0020096652
DOI: 10.1258/jhsrp.2009.009059
Appears in Collections:Public Health publications

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