Joyce, Geoffrey F.; Zissimopoulos, Julie; Goldman, Dana P. - In: Journal of Health Economics 32 (2013) 6, pp. 1345-1355
Despite its success, Medicare Part D has been widely criticized for the gap in coverage, the so-called “doughnut hole …”. We compare the use of prescription drugs among beneficiaries subject to the coverage gap with usage among beneficiaries … who are not exposed to it. We find that the coverage gap does, indeed, disrupt the use of prescription drugs among seniors …