What is the risk of stroke in young women with probable migraine with visual aura?
Women with probable migraine with visual aura were at 1.5-fold increased odds (95% CI, 1.1 2.0) of stroke compared with Women with this migraine type who also smoked cigarettes and used OCs had 7.0-fold higher odds (95% CI, 1.3 22.8) of stroke than women with probable migraine with visual aura who did not smoke or use OCs; however, women with probable migraine with visual aura who were OC users but nonsmokers did not have a significantly increased odds of stroke, which suggests the risk with both OC use and smoking in women with probable migraine with visual aura is additive.