This work was funded by a grant from the National Cancer Institute (CA75140) and the Veterans Administration Center for Practice Management and Outcomes Research, Ann Arbor, MI. Dr. Katz was also supported by a Robert Wood Johnson Generalist Faculty Scholar Award.
Address correspondence to Paula M. Lantz, Ph.D., Associate Professor, 109 Observatory, Room M3116, Department of Health Management and Policy, School of Public Health, University of Michigan SPH, Ann Arbor, MI 48109. Judith K. Zemencuk, M.A., is a Research Associate, VA Center for Practice Management and Outcomes Research, Ann Arbor, MI. Steven J. Katz, M.D., M.P.H., is an Associate Professor, Departments of Internal Medicine and Health Management and Policy, University of Michigan, Ann Arbor, MI. This article, submitted to Health Services Research on June 8, 2000, was revised and accepted for publication on December 22, 2000.