Connolly, S.J.

patient stroke atrial fibrillation atrial fibrillation study anticoagulant aspirin ischemic stroke event ischemic trial patient age outcome prevention stroke prevention treatment death warfarin nonrheumatic atrial fibrillation therapy analysis randomized arch intern med nonvalvular atrial fibrillation group hazard effect anticoagulation figure ratio afasak patient history heart failure result factor history embolism heart low-dose warfarin table interaction investigator hazard ratio erasmus mc failure 100 patient-years nonvalvular atrial fibrillation investigators efficacy anticoagulant vs aspirin swets subs service hemorrhage infarction hypertension model analyses walraven non-rheumatic atrial fibrillation reduction downloaded february association placebo nonrheumatic ct scan result disease intern benefit randomization american low-dose patient subgroups af patients patient-year randomized trials risk reduction blood hemorrhagic blood neurologic deficits