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ObjectivesTo assess the association between multiple pharmacy use and medication adherence and potential drug–drug interactions (DDIs) in older adults.
DesignCross‐sectional propensity score‐weighted analysis.
Setting2009 claims data.
ParticipantsA nationally representative sample of 926,956 Medicare Part D beneficiaries aged 65 and older continuously enrolled in fee‐for‐service Medicare and Part...
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