1. From the Division of Biostatistics, University of Virginia School of Medicine, Charlottesville (R.D.A.); the Honolulu Heart Program, Kuakini Medical Center, Honolulu, Hawaii (R.D.A., J.D.C., B.L.R., K.Y.); the Department of Medicine, John A. Burns School of Medicine, University of Hawaii at Manoa, Honolulu (J.D.C., B.L.R.); and the Honolulu Epidemiology Research Section, Epidemiology and Biometry Program, National Heart, Lung, and Blood Institute, Honolulu, Hawaii (D.S.S., C.M.B.).