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Association of Part D Coverage Gap With COPD Medication Adherence

Yanni F. Yu, DSc, MA, MS; Larry R. Hearld, PhD; Haiyan Qu, PhD; Midge N. Ray, PhD; and Meredith L. Kilgore, PhD
Using longitudinal Medicare claims data, this study quantified the association of the Medicare Part D coverage gap with medication adherence among beneficiaries with chronic obstructive pulmonary disease.
Findings from this study revealed that reaching the Part D coverage gap is associated with lower odds of medication adherence among Medicare beneficiaries with COPD. Building on these results, additional research related to other important illnesses or other meaningful outcomes will be pertinent for increasing the knowledge base in this area, improving current benefit design, and optimizing the quality of health policy decisions to help Medicare provide optimal healthcare for its members with cost-effective outcomes.

Author Affiliations: Boehringer-Ingelheim Pharmaceuticals, Inc (YFY), Ridgefield, CT; School of Health Professions (LRH, HQ, MNR) and Ryals School of Public Health (MLK), University of Alabama at Birmingham, Birmingham, AL.
 
Source of Funding: None.
 
Author Disclosures: The authors report no relationship or financial interest with any entity that would pose a conflict of interest with the subject matter of this article.
 
Authorship Information: Concept and design (YFY, LRH, HQ, MLK); acquisition of data (YFY, HQ, MLK); analysis and interpretation of data (YFY, LRH, HQ, MNR, MLK); drafting of the manuscript (YFY, HQ, MNR); critical revision of the manuscript for important intellectual content (YFY, LRH, MNR, MLK); statistical analysis (YFY, LRH, MLK); administrative, technical, or logistic support (YFY, MLK); and supervision (LRH, MNR). 
 
Address Correspondence to: Yanni F. Yu, DSc, Boehringer Ingelheim Pharmaceuticals, Inc, 900 Ridgebury Rd, Ridgefield, CT 06877. E-mail: yanni.yu@boehringer-ingelheim.com.
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