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. Stroke Risk Factors, Categorized by Those That Are Sex-Specific, Stronger or More Prevalent in Women, or Similar Between Women and Men Risk Factor Sex-Specific Risk Factors Risk Factors That Are Stronger or More Prevalent in Women Risk Factors With Similar Prevalence in Men and Women but Unknown Difference in Impact Pregnancy X Preeclampsia X Gestational diabetes X Oral contraceptive use X Postmenopausal hormone use X Changes in hormonal status X Migraine with aura X Atrial fibrillation X Diabetes mellitus X Hypertension X Physical inactivity X Age X Prior cardiovascular disease X Obesity X Diet X Smoking X Metabolic syndrome X Depression X Psychosocial stress X Table 2. Definition of Classes and Levels of Evidence Used in AHA/ASA Recommendations Class I Conditions for which there is evidence for and/ or general agreement that the procedure or treatment is useful and effective. Class II Conditions for which there is conflicting evi dence and/or a divergence of opinion about the usefulness/efficacy of a procedure or treatment. Class IIa The weight of evidence or opinion is in favor of the procedure or treatment. 