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Background Advanced age and type 2 diabetes (T2D) are common in patients with nonvalvular atrial fibrillation (NVAF). We evaluated the impact of age on the effectiveness and safety of rivaroxaban versus warfarin in this population. Methods We analyzed electronic health record data from November 2010, to December 2019 including adults with NVAF and T2D, newly started on rivaroxaban or warfarin. Propensity score-overlap weighted hazard ratios (HRs) for stroke/systemic embolism (SSE), hospitalization for major or clinically relevant nonmajor bleeding (CRNMB), vascular death, major adverse limb events (MALE), major bleeding, and intracranial hemorrhage (ICH) were calculated for older (≥80 years) and younger (