Relationship between body mass index and outcomes in patients with atrial fibrillation treated with edoxaban or warfarin in the ENGAGE AF-TIMI 48 trial

Aims To investigate the relationship between body mass index (BMI) and outcomes in patients with atrial fibrillation (AF). Methods and results In the ENGAGE AF-TIMI 48 trial, patients with AF were randomized to warfarin (international normalized ratio 2.0–3.0) or edoxaban. The cohort (N = 21 028) included patients across BMI categories (kg/m2): underweight (18.5 kg/m2, while time in therapeutic range for warfarin improved significantly as BMI increased (P Conclusion An increased BMI was independently associated with a lower risk of stroke/SEE, better survival, but increased risk of bleeding. The efficacy and safety profiles of edoxaban were similar across BMI categories ranging from 18.5 to >40.