United States national prevalence of electrocardiographic abnormalities in black and white middle-age (45- to 64-Year) and older (=65-Year) adults (from the Reasons for Geographic and Racial Differences in Stroke Study).
Prineas RJ, Le A, Soliman EZ, Zhang ZM, Howard VJ, Ostchega Y, Howard G. United States national prevalence of electrocardiographic abnormalities in black and white middle-age (45- to 64-Year) and older (=65-Year) adults (from the Reasons for Geographic and Racial Differences in Stroke Study). Am J Cardiol. 2012 Apr 15; 109(8):1223-8.