1. An assessment of beneficiary knowledge of Medicare coverage options and the prescription drug benefit Publication: Washington, D.C. : AARP Public Policy Institute, c2006 Subject(s): Choice BehaviorDecision MakingHealth Knowledge, Attitudes, PracticeInsurance, Pharmaceutical ServicesMedicare Part DAgedAged, 80 and overEducational StatusInsurance BenefitsInsurance CoverageHumansUnited States