1. From the Cardiovascular Health Research Unit, Departments of Medicine (D.S.S., S.W., B.M.P., R.N.L., L.A.C.), Epidemiology (D.S.S., M.A.A., B.M.P.), and Biostatistics (P.A.), University of Washington, Seattle; the Institute for Social Research, University of Michigan, Ann Arbor (T.E.R.); and the Department of Social Medicine, The Hebrew University–Hadassah School of Public Health, Jerusalem, Israel (Y.F.).