Heart failure was listed as the primary diagnosis for 11.8% of patients hospitalized with atrial fibrillation (AF). Coronary heart disease was listed for 9.9% of AF patients, and stroke was listed for 4.9%.
Centers for Disease Control and Prevention. Atrial Fibrillation as a Contributing Cause of Death and Medicare Hospitalization: United States 1999. MMWR Morb Mortal Wkly Rep. 2003; 52: 128-131. http://www.cdc.gov/mmwr/preview/mmwrhtml/mm5207a2.htm