Comparison of Statin Adherence Among Beneficiaries in MA-PD Plans Versus PDPs

Abstract

During an early year of the Part D program, MA-PD enrollees had slightly better adherence to statin therapy than PDP enrollees. While the difference was statistically significant, it was very small and unlikely to lead to clinically meaningful consequences. Less than one-half of MA-PD and PDP enrollees had good adherence in statin use, suggesting room for improvement in both types of Part D plans. Continuing evaluations of adherence in diverse therapy classes are needed for Medicare Part D beneficiaries.