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August 2002, Vol 92, No. 8 | American Journal of Public Health 1257-1263
© 2002 American Public Health Association

RESEARCH AND PRACTICE

Impact of Generosity Level of Outpatient Prescription Drug Coverage on Prescription Drug Events and Expenditure Among Older Persons

Margaret B. Artz, PhD, Ronald S. Hadsall, PhD and Stephen W. Schondelmeyer, PharmD, PhD

The authors are with the Department of Experimental and Clinical Pharmacology and the Department of Pharmaceutical Care and Health Systems, College of Pharmacy, University of Minnesota, Minneapolis. Margaret B. Artz is also with the Institute for the Study of Geriatric Pharmacotherapy, University of Minnesota, Minneapolis. Ronald S. Hadsall and Stephen W. Schondelmeyer are also with the PRIME Institute, University of Minnesota, Minneapolis.

Correspondence: Requests for reprints should be sent to Margaret B. Artz, PhD, Institute for the Study of Geriatric Pharmacotherapy, University of Minnesota College of Pharmacy, 7–115D Weaver-Densford Hall, 308 Harvard St SE, Minneapolis, MN 55455 (e-mail: artzx001{at}tc.umn.edu).

Objectives. This study examined the impact of drug coverage generosity on older persons’ prescription events (fills) and expenditures.

Methods. A cross-sectional study was conducted of 6237 older persons from the 1995 Medicare Current Beneficiary Survey. Dependent variables were per capita prescription events and expenditures. Independent variables were insurance type and drug coverage generosity. Control variables included sociodemographic and health status factors.

Results. Regardless of insurance type, per capita prescription events increased as drug coverage generosity improved and then decreased at the most generous level. Per capita prescription expenditures increased as generosity improved; with generous prescription coverage, prescription expenditures were approximately 3 times those with Medicare only.

Conclusions. Even when factors that affect drug use and insurance selection are controlled, prescription coverage generosity influences prescription use. (Am J Public Health. 2002;92:1257–1263)




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