Heart failure rates among AFib patients
A study of Medicare beneficiaries found that those with atrial fibrillation (AF) were significantly more likely to experience heart failure than their non-AF counterparts (36.7% versus 10.4%).
Lee, WC, GA Lamas, S Balu, J Spalding, Q Wang, and CL Pashos. Direct Treatment Cost of Atrial Fibrillation in the Elderly American Population: A Medicare perspective. J Med Econ. 2008; 11(2): 281-98. http://www.ncbi.nlm.nih.gov/pubmed/19450086