Silver Book Fact
AFib attributed stroke rate by age
The percentage of strokes attributable to atrial fibrillation increases from 1.5% at ages 50 to 59, to 23.5% at ages 80 to 89.
Roger V, Go A, Lloyd-Jones D, Benjamin E, et al. Heart Disease and Stroke Statistics–2012 Update. Circ. 2012; 125(1): e2-e220. http://circ.ahajournals.org/content/125/1/e2