How Medicare Part D benefit phases affect adherence with evidence-based medications following acute myocardial infarction.

ABSTRACT:

Objective

Assess impact of Medicare Part D benefit phases on adherence with evidence-based medications after hospitalization for an acute myocardial infarction.

Data source

Random 5 percent sample of Medicare beneficiaries.

Study design

Difference-in-difference analysis of drug adherence by AMI patients stratified by low-income subsidy (LIS) status and benefit phase.

Data collection/extraction methods

Subjects were identified with an AMI diagnosis in Medicare Part A files between April 2006 and December 2007 and followed until December 2008 or death (N = 8,900). Adherence was measured as percent of days covered (PDC) per month with four drug classes used in AMI treatment: angiotensin-converting enzyme (ACE) inhibitors/angiotensin II receptor blockers (ARBs), be

SUBMITTER: Stuart B 

PROVIDER: S-EPMC3876395 | biostudies-literature | 2013 Dec

REPOSITORIES: biostudies-literature