The primary objective of this study is to compare the Length of Stay from treatment of oral
anticoagulant initiation to hospital discharge of patients hospitalized and subsequently
treated with dabigatran or warfarin for non-valvular atrial fibrillation in a real-world
Japanese clinical practice. The secondary objective of the study is to compare LoS of
patients hospitalized with 1) acute ischemic stroke, and 2) due to non-valvular atrial
fibrillation. Other objectives are (1) to compare the in-hospital direct and indirect-related
costs between dabigatran and warfarin, and (2) to compare the rates of patients directly
discharged at home after the index hospitalization between dabigatran and warfarin.