One aspirin can't prevent a stroke but can prevent a major vascular event.
D001241:Aspirin / Q000008:administration & dosage*; D002561:Cerebrovascular Disorders / Q000517:prevention & control*; D005260:Female; D006801:Humans; D002546:Ischemic Attack, Transient / Q000188:drug therapy; D008297:Male; D012737:Sex Factors
D001241:Aspirin