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Study design. NOAC index date was the date of the first OAC dispensation (warfarin, apixaban, rivaroxaban, dabigatran) in the study period (January 2013–June 2015). Each patient was followed from the index date to the date of discontinuation orswitching of OAC therapy, date of death, or end of the study period. OAC, oralanticoagulant.
