Impact of medicare part D plan features on use of generic drugs.

ABSTRACT:

Background

Little is known about how Medicare Part D plan features influence choice of generic versus brand drugs.

Objectives

To examine the association between Part D plan features and generic medication use.

Methods

Data from a 2009 random sample of 1.6 million fee-for-service, Part D enrollees aged 65 years and above, who were not dually eligible or receiving low-income subsidies, were used to examine the association between plan features (generic cost-sharing, difference in brand and generic copay, prior authorization, step therapy) and choice of generic antidepressants, antidiabetics, and statins. Logistic regression models accounting for plan-level clustering were adjusted for sociodemographic and health status.

Results

Generic cost-sharing ranged from $0

SUBMITTER: Tang Y 

PROVIDER: S-EPMC4142208 | biostudies-literature | 2014 Jun

REPOSITORIES: biostudies-literature