Hospital costs for nonrecurrent ischemic stroke are 20% higher in patients with atrial fibrillation, than in patients without the disease.
Wang, Guijing, Heesoo Joo, Xin Tong, and Mary George. Hospital Costs Associated with Atrial Fibrillation for Patients with Ischemic Stroke Aged 18-64 Years in the United States. Stroke. 2015; 46: 1314-20. http://stroke.ahajournals.org/content/46/5/1314.abstract?sid=700ab191-0e9c-437c-a37e-0e3c17ae6d15