| Development of a new scale to measure self-reported medication nonadherence. | |
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MedLine Citation:
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PMID: 21272524 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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BACKGROUND: A major drawback in the medication adherence literature today is the absence of a gold standard for measuring medication adherence. Objective measures of nonadherence such as prescription claims and pill count, while quantifying nonadherence, do not provide the reasons for nonadherence, hence making it difficult to develop intervention strategies. Self-reported measures are helpful to determine reasons for nonadherence; however, widely used self-reported measures such as the Morisky scale are restricted to only few potential reasons. OBJECTIVES: The objective of this study was to develop a new scale to measure self-reported nonadherence and to compare it with the existing Morisky scale. METHODS: A cross-sectional study of adult U.S. population on cholesterol-lowering and asthma maintenance medications was used. Data on nonadherence were collected using (1) the newly developed Medication Adherence Reasons Scale (MARS), (2) Morisky scale, and (3) an objective self-reported measure. RESULTS: A total of 840 responses were collected. Factor analysis of MARS resulted in 5 subscales in cholesterol-lowering medications and 3 subscales in asthma maintenance medications. The level of agreement between both scales in identifying adherents and nonadherents as measured by kappa coefficient was 0.381 in cholesterol-lowering medications and 0.545 in asthma medications. MARS was able to identify various other significant reasons for nonadherence than that identified by the Morisky scale. CONCLUSION: A new subjective measure of medication nonadherence based on the frequently reported reasons of nonadherence was developed, and it showed adequate reliability when compared with the Morisky scale to warrant future study. |
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Authors:
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Elizabeth J Unni; Karen B Farris |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2009-10-8 |
Journal Detail:
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Title: Research in social & administrative pharmacy : RSAP Volume: - ISSN: 1934-8150 ISO Abbreviation: - Publication Date: 2009 Oct |
Date Detail:
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Created Date: 2011-1-28 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101231974 Medline TA: Res Social Adm Pharm Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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Department of Pharmaceutical Sciences, University of Southern Nevada, 10920 South Riverfront Parkway, South Jordan, UT 84095, USA. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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