AFib rates by age
Around 82% of Americans with atrial fibrillation are age 65 and older. Around 37% are age 80 and older.
Go A, Hylek E, Phillips K, Chang Y, et al. Prevalence of Diagnosed Atrial Fibrillation in Adults: National implications for rhythm management and stroke prevention: the AnTicoagulation and Risk Factors In Atrial Fibrillation (ATRIA) Study. JAMA. 2001; 285(18): 2370-5. http://jama.ama-assn.org/content/285/18/2370.abstract