The impact of Medicare Part D on medication treatment of hypertension

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From: Health Services Research(Vol. 46, Issue 1)
Publisher: Health Research and Educational Trust
Document Type: Report
Length: 3,511 words
Lexile Measure: 1510L

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Abstract :

Objective. To evaluate Medicare Part D's impact on use of antihypertensive medications among seniors with hypertension. Data Sources. Medicare-Advantage plan pharmacy data from January 1, 2004 to December 12, 2007 from three groups who before enrolling in Part D had no or limited drug benefits, and a comparison group with stable employer-based coverage. Study Design. Pre-post intervention with a comparison group design was used to study likelihood of use, daily counts, and substitutions between angiotensin-converting enzyme inhibitors and angiotensin-II receptor blockers (ARBs). Principal Findings. Antihypertensive use increased most among those without prior drug coverage: likelihood of use increased (odds ratio = 1.40, 95 percent confidence interval [CI] 1.25-1.56), and daily counts increased 0.29 (95 percent CI 0.24-0.33). Proportion using ARBs increased from 40 to 46 percent. Conclusions. Part D was associated with increased antihypertensive use and use of ARBs over less expensive alternatives. Key Words. Medicare, pharmacy, access/demand/utilization, hypertension

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Gale Document Number: GALE|A250677418