title: [An analysis of risk factors for ischemic stroke of different age and gender].
abstract: OBJECTIVE
  To compare distribution difference in risk factors of patients with first-ever ischemic stroke (IS) of different age and gender.
  
  
  METHODS
  A total of 1027 patients admitted to the neurological department in Shanghai Renji Hospital with first-ever IS were recruited and divided into young adult group (< 50 years old), middle-aged group (50 - 80 years old), and very old group (> 80 years old) according to their ages. Risk factor analysis included history of smoking, high alcohol consumption, hypertension (HT), diabetes mellitus (DM), heart diseases, atrial fibrillation (AF) and family history of cardiovascular diseases.
  
  
  RESULTS
  Female patients were globally older than male patients (71.1 vs 65.7, P < 0.001) at the first attack of IS and having higher prevalence of DM (26.8% vs 19.2%, P = 0.004), heart diseases (28.8% vs 19.2%, P < 0.001) and AF (7.6% vs 3.9%, P = 0.009). However, female patients were less likely to drink heavily (1.0% vs 31.6%, P < 0.001) or smoke (4.4% vs 59.9%, P < 0.001) than the male patients. The rates of smoking and heavy drinking in young adult group were higher than that in other two groups. Patients in very old group had higher prevalence of heart diseases and AF but lower proportion of positive family cardiovascular diseases history than patients in other two groups. HT and DM were equally frequent among three groups. In young adult group, female patients were more likely to have heart diseases and family history of heart diseases (P = 0.015 and P = 0.048). In middle-old group, HT, DM, heart disease and AF were more common in women than in men (P = 0.021, P = 0.004, P = 0.001 and P = 0.039).
  
  
  CONCLUSIONS
  There are differences in risk factor distribution in patients with first-ever IS of different age and gender. Therefore, screening and health education should be performed in allusion to different risk factors.
authors.affiliation: Department of Neurology, Shanghai Jiaotong University School of Medicine, Shanghai, China.
authors.forename: Xiao-ying
authors.initials: XY
authors.lastname: Yao
authors.forename: Yan
authors.initials: Y
authors.lastname: Lin
authors.forename: Jie-li
authors.initials: JL
authors.lastname: Geng
authors.forename: Ya-meng
authors.initials: YM
authors.lastname: Sun
authors.forename: Ying
authors.initials: Y
authors.lastname: Chen
authors.forename: Yan-sheng
authors.initials: YS
authors.lastname: Li
mesh_terms: D017668:Age of Onset; D000368:Aged; D000369:Aged, 80 and over; D002545:Brain Ischemia / Q000453:epidemiology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012307:Risk Factors; D017678:Sex Distribution; D020521:Stroke / Q000453:epidemiology*