March 2007

We examined data from a large cohort of subjects with atrial fibrillation to determine whether men and women had different risks for atrial fibrillation-related thromboembolism. Women with atrial fibrillation who were not taking warfarin had a 60% higher rate of stroke than did men, independent of other clinical risk factors for stroke. When taking warfarin, both women and men had significant reductions in stroke risk without differences by sex in the rates of bleeding complications. These findings support the addition of female sex to traditional stroke risk stratification schemes for assisting in antithrombotic decision making for patients with atrial fibrillation.

We performed a whole-country study using linked health care records in Finland and showed that stable angina as the initial symptomatic manifestation of coronary disease occurs as frequently in women as it does in men. Among easily recognized subgroups, the absolute rates of prognostic outcomes were similarly high in women and men.