Autopsy and angi- ographic studies have documented a higher prevalence of cerebral aneurysms in women,49 as well as a higher risk of These findings are in agreement with results of a recent study from the Nationwide Inpatient Sample, which claimed that more than twice as many women as men were discharged with both ruptured and unruptured cerebral aneu- There is also a difference in the distribution of aneu- rysm locations in women versus men, and this may convey a higher hemorrhagic risk, especially with greater prevalence of aneurysms at the posterior communicating artery.52 Other studies have suggested similar trigger factors for aneurysm rupture in men and women.53 There is also no convincing evi- dence of increased risk of aneurysmal SAH in pregnancy or and before age 50 years, aneurysmal SAH is more common in men.55 A population-based case-control study showed that the risk of SAH was lower in women with first pregnancy after 23 years of age and in those who had ever used hormone therapy (HT).56 The literature certainly confirmed a higher incidence of SAH and a higher prevalence of cerebral aneurysms in women, but not necessarily a higher risk for rupture of aneurysms with similar characteristics. Prevalence On the basis of self-report data from the US 2010 National Health Interview Survey, it is estimated that just more than half (51.8%, 3.223 million) of the 6.226 million adults (3%) in the United States who have been told they had a stroke were Data from the Behavioral Risk Factor Surveillance System for the time period 2006 to 2010 showed that the age- adjusted self-reported prevalence of stroke survivors did not change significantly for women (2.5% 2.6%), whereas it did for men, with prevalence declining from 2.8% in 2006 to 2.5% in 2009 and then increasing to 2.7% in 2010.58 Mortality In the United States, 60% of deaths related to stroke in Table 3. 