How does drug treatment for diabetes compare between Medicare Advantage prescription drug plans (MAPDs) and stand-alone prescription drug plans (PDPs)?

ABSTRACT:

Objective

To compare the use of guideline-recommended prescription medications for diabetes among Medicare beneficiaries enrolled in stand-alone prescription drug plans (PDPs) with Medicare Advantage prescription drug plans (MAPDs) in the presence of potential selection bias.

Data sources/study setting

Centers for Medicare and Medicaid Services' Chronic Condition Data Warehouse (2006, 2007).

Study design

Retrospective cross-sectional comparison of drug use and proportion of days covered (PDC) for oral-antidiabetics, ACE-inhibitors/ARBs, and antihyperlipidemics among PDP and MAPD enrollees with diabetes. We estimated "naïve" regression models assuming exogenous plan choice and two-stage residual inclusion (2SRI) models to study endogeneity in choice of Part D plan type

SUBMITTER: Erten MZ 

PROVIDER: S-EPMC3681243 | biostudies-literature | 2013 Jun

REPOSITORIES: biostudies-literature