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  • Title: Unstable angina in the myocardial infarction triage and intervention registry (MITI): short- and long-term outcomes in men and women.
    Author: Kim C, Schaaf CH, Maynard C, Every NR.
    Journal: Am Heart J; 2001 Jan; 141(1):73-7. PubMed ID: 11136489.
    Abstract:
    BACKGROUND: Studies of unstable angina have focused on hospital mortality; long-term mortality studies have been limited by small numbers of patients or health care providers. The objectives of this study were to determine whether men and women with unstable angina had different presentations, mortality rates, and procedure utilization. METHODS: We analyzed a prospective observational registry of 4305 men (60%) and 2847 women (40%) with unstable angina who were admitted to coronary care units in King County, Washington, between 1988 and 1994. We compared the rates of symptoms, survival, and procedure utilization between sexes after adjustment for age, race, insurance status, and medical history. RESULTS: Women were older and had higher rates of hypertension and congestive heart failure than men but had lower rates of cigarette smoking, previous myocardial infarction, and previous procedure use (P <.0001). Women had significantly higher rates of dyspnea, nausea, and epigastric pain and less diaphoresis than men did (P <.0001). Women underwent fewer procedures, but after adjustment for age and medical history this difference was no longer significant except for coronary bypass grafting (odds ratio 0.50, 95% confidence interval [CI] 0.37-0.69); after index hospitalization, men and women underwent procedures at similar rates. Although women had higher rehospitalization rates than men, early mortality (odds ratio 0.89, 95% CI 0.55-1.4) and late mortality (hazard ratio 0.98, 95% CI 0.95-1.0) were similar between men and women after adjustment for age. CONCLUSIONS: Women and men with unstable angina have different risk factors and symptoms upon presentation but have similar procedure use and mortality rates.
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