Lower Testosterone Levels Predict Incident Stroke and Transient Ischemic Attack in Older Men

School of Medicine and Pharmacology (B.B.Y., S.A.P.C., L.F., G.J.H.), University of Western Australia, Crawley, WA 6009, Australia; Department of Endocrinology and Diabetes (B.B.Y.), Fremantle Hospital, Fremantle, WA 6959, Australia; WA Centre for Health and Ageing (Z.H., O.P.A., L.F.), University of Western Australia, Crawley, WA 6009, Australia; School of Psychiatry and Clinical Neurosciences (O.P.A.), and School of Surgery (P.E.N.), University of Western Australia, Crawley, WA 6009, Australia; PathWest, Department of Biochemistry (S.A.P.C.), Fremantle Hospital, Fremantle, WA 6959, Australia; School of Population Health and Clinical Practice (K.J.), University of Adelaide, SA 5005, Australia