Validation of risk stratification schemes for predicting stroke and thromboembolism in patients with atrial fibrillation: nationwide cohort study.

THROMBOEMBOLISM risk factors; ATRIAL fibrillation; DISEASE risk factors; HEALTH risk assessment; DISEASE susceptibility; THROMBOSIS risk factors; CEREBROVASCULAR disease diagnosis; THROMBOEMBOLISM; CARDIAC patients; LONGITUDINAL method; EVALUATION of medical care; RESEARCH bias; DIAGNOSIS

The article focuses on a study on the prediction of the risk of thromboembolic events in patients with atrial fibrillation. The study included 73,538 patients who were admitted for non-valvular atrial fibrillation between 1997 and 2006. It found that the risk of thromboembolic events is dependent on the risk factors of CHADs 2, CHA 2DS 2-VACs.