| Does Medication Adherence Lower Medicare Spending among Beneficiaries with Diabetes? | |
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MedLine Citation:
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PMID: 21413981 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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Objective. To measure 3-year medication possession ratios (MPRs) for renin-angiotensin-aldosterone system (RAAS) inhibitors and statins for Medicare beneficiaries with diabetes, and to assess whether better adherence is associated with lower spending on traditional Medicare services controlling for biases common to previous adherence studies. Data Source. Medicare Current Beneficiary Survey data from 1997 to 2005. Study Design. Longitudinal study of RAAS-inhibitor and statin utilization over 3 years. Data Collection. The relationship between MPR and Medicare costs was tested in multivariate models with extensive behavioral variables to control for indication bias and healthy adherer bias. Principal Findings. Over 3 years, median MPR values were 0.88 for RAAS-I users and 0.77 for statin users. Higher adherence was strongly associated with lower Medicare spending in the multivariate analysis. A 10 percentage point increase in statin MPR was associated with U.S.$832 lower Medicare spending (SE=219; p<.01). A 10 percentage point increase in MPR for RAAS-Is was associated with U.S.$285 lower Medicare costs (SE=114; p<.05). Conclusions. Higher adherence with RAAS-Is and statins by Medicare beneficiaries with diabetes results in lower cumulative Medicare spending over 3 years. At the margin, Medicare savings exceed the cost of the drugs. |
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Authors:
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Bruce Stuart; Amy Davidoff; Ruth Lopert; Thomas Shaffer; J Samantha Shoemaker; Jennifer Lloyd |
Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-3-17 |
Journal Detail:
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Title: Health services research Volume: - ISSN: 1475-6773 ISO Abbreviation: - Publication Date: 2011 Mar |
Date Detail:
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Created Date: 2011-3-18 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0053006 Medline TA: Health Serv Res Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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© Health Research and Educational Trust. |
Affiliation:
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University of Maryland, Baltimore, MD Therapeutic Goods Administration, Canberra, ACT. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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