1. From the Michigan Department of Community Health (C.F., A.P.R., S.L.-C.), Lansing, Mich; the Stroke Program (L.B.M.), University of Michigan Medical School and Department of Epidemiology, University of Michigan School of Public Health, Ann Arbor, Mich; and the Department of Epidemiology (M.J.R.), College of Human Medicine, Michigan State University, East Lansing, Mich.