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Title
Supplemental insurance and use of effective cardiovascular drugs among elderly medicare beneficiaries with coronary heart disease.
Authors
Federman, A D; Adams, A S; Ross-Degnan, D; Soumerai, S B; Ayanian, J Z
Abstract
Cost-sharing in US prescription drug coverage plans for elderly persons varies widely. Evaluation of prescription drug use among elderly persons by type of health insurance could provide useful information for designing a Medicare drug program.