Stroke prevention by aspirin or warfarin for atrial fibrillation

James M. Kitchens, MD Toronto General Hospital Toronto, Ontario

Either warfarin or aspirin reduces the risk of ischemic stroke and systemic embolism in patients with nonrheumatic atrial fibrillation.

Randomized Controlled Trial

2 effects

1.3 years

1330 subjects

Determinants	Outcome	Details
Minor Protective Factor Aspirin Manufactured	Minor decreased risk of Stroke Brain system	High evidence -22.0%
Protective Factor Aspirin Manufactured	Decreased risk of Mortality Musculoskeletal system	High evidence -32.0%