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...