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Dreischulte, Tobias; Barnett, Karen; Madhok, Vishnu; Guthrie, Bruce (2014): Use of oral anticoagulants in atrial fibrillation is highly variable and only weakly associated with estimated stroke risk: Cross-sectional population database study. In: European Journal of General Practice, Vol. 20, No. 3: pp. 181-189
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Abstract

Background: Current international guidelines promote the use of stroke risk stratification tools to inform decision making about oral anticoagulant (OAC) use in atrial fibrillation (AF). Objectives: To examine (a) differences between CHADS(2) and CHA(2)DS(2) VASc in classifying stroke risk in a primary care population of AF patients; (b) patterns of use of antithrombotics by stroke risk; and (c) patient and practice characteristics associated with use of oral anticoagulants in patients with AF. Methods: Cross-sectional multilevel modelling study of all patients with