Silver Book Fact
Stroke prevalence increases with age—the rate at ages 85 to 94 is 3.5 times higher than at ages 65 to 74.
National Heart, Lung, and Blood Institute. Incidence and Prevalence: 2006 chart book on cardiovascular and lung diseases. Bethesda, MD: NIH, National Heart, Lung, and Blood Institute; 2006. http://www.nhlbi.nih.gov/resources/docs/06a_ip_chtbk.pdf