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Observational Analysis

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Observational Analysis
An observational analysis was conducted to observe the effectiveness of warfarin in patients with atrial fibrillation after the patients had ischemic strokes. In the article “Real World Effectiveness of Warfarin Among Ischemic Stroke Patients with Atrial Fibrillation,” 12,552 patients were observed for one year after being admitted to the hospital for acute ischemic stroke and discharged with a diagnosis of persistent or paroxysmal atrial fibrillation. These observations were made between January 2009 and December 2011. The patients were divided into two separate groups for comparison during the study: patients taking warfarin and patients not treated with any anticoagulants. Patients that were unable to take anticoagulants were excluded
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