title: Sex, age, and clinical presentation of acute coronary syndromes.
abstract: OBJECTIVE
  To investigate sex differences in clinical presentation in younger and older patients hospitalised with a wide spectrum of acute coronary syndromes (ACS).
  
  
  RESULTS
  We analysed 10253 patients with a discharge diagnosis of ACS in the Euro Heart Survey of patients with Acute Coronary Syndromes. There were 1010 women and 3709 men < 65 years. Among patients <65 years, fewer women than men presented with ST elevation, (OR [odds ratio]: 0.62 [0.53-0.71]) and developed Q-wave myocardial infarction (OR 0.58 [0.50-0.67]), whereas in patients > or =65 years there was no significant sex difference. Women <65 years were more likely than men of the same age to be discharged with a diagnosis of unstable angina (OR 1.56 [1.35-1.79]), but there was no sex difference in older patients; the p for interaction between sex and age for both was <0.0001. Among patients who underwent coronary angiography, both younger and older women were less likely than men to have 3-vessel or main stem disease. In a logistic regression analysis stratified for age, female sex was a significant negative determinant of presenting with ST elevation in patients <65 years (OR 0.68 [0.58-0.79]), whereas there was no effect of sex in patients > or =65 years.
  
  
  CONCLUSIONS
  In younger patients with ACS, women were less likely than men to present with ST elevation and more likely to be discharged with a diagnosis of unstable angina. In older patients there were no differences in clinical presentation. Both older and younger women had less extensive atherosclerosis. The findings suggest a different pathophysiology of ACS in younger, but not older, women.
authors.affiliation: Department of Medicine, Goteborg University, Sahlgrenska University Hospital, Ostra, SE-416 85 Goteborg, Sweden. annika.rosengren@hjl.gu.se
authors.forename: Annika
authors.initials: A
authors.lastname: Rosengren
authors.forename: Lars
authors.initials: L
authors.lastname: Wallentin
authors.forename: Anselm
authors.initials: A
authors.lastname: K Gitt
authors.forename: Solomon
authors.initials: S
authors.lastname: Behar
authors.forename: Alexander
authors.initials: A
authors.lastname: Battler
authors.forename: David
authors.initials: D
authors.lastname: Hasdai
mesh_terms: D000208:Acute Disease; D017677:Age Distribution; D000368:Aged; D000787:Angina Pectoris / Q000209:etiology / Q000401:mortality; D003327:Coronary Disease / Q000209:etiology* / Q000401:mortality; D005060:Europe / Q000453:epidemiology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000209:etiology / Q000401:mortality; D016017:Odds Ratio; D012044:Regression Analysis; D012307:Risk Factors; D017678:Sex Distribution; D013577:Syndrome