Pearce, L.A.

stroke patient fibrillation atrial atrial fibrillation aspirin trial scheme participant ischemic prevention ischemic stroke 100 patient-years therapy warfarin atrial fibrillation patients stroke prevention study swets subs service antithrombotic therapy factor patient-year point aspirin therapy nonrheumatic atrial fibrillation anticoagulation atrial fibrillation investigators spaf iii trial risk factors ann intern med table antithrombotic arch intern med nonvalvular atrial fibrillation framingham heart failure ischemia heart af patients hypertension stratification stroke risk score intern service chads 2 stroke rates investigator eaft participants analysis randomized result ischemic attack non-rheumatic atrial fibrillation prevention participants downloaded event february cohort failure diabetes ischemic attacks adjusted-dose warfarin analyses stroke rate diabetes mellitus pearce chads 2 scores thromboembolism value circulation risk stratification schemes reduction attack number strata nonvalvular age ͼ75 years systolic blood