title: [Baseline study on a stroke-related cohort in the rural community of Shanghai].
abstract: OBJECTIVE
  To present data from a baseline investigation on stroke-related cohort population in rural area of Shanghai.
  
  
  METHODS
  A cross-sectional study was carried out in a cluster sampling population aged 40 years and over. General information and data on common risk factors in the population were gathered and cerebral vascular hemodynamic indexes were checked. Hemodynamic score was estimated according to single indexes by unified methods. 5335 persons who had met the inclusion criteria were enlisted in the study. Exposure level of risk factors, prevalence of stroke, and hemodynamic indexes were analyzed and distributional characteristics were described.
  
  
  RESULTS
  Exposure rate of hypertension, heart disease, diabetes, family history of hypertension, overweight or obesity in males were 31.74%, 6.09%, 1.16%, 3.22%, 17.64%, 29.68% and were 32.76%, 9.22%, 1.55%, 3.84%, 19.22%, 29.44% in female respectively. Standard prevalence of stroke was 1167.3/100000, which in male was significantly higher than that in female (P < 0.05). The change of cerebral vascular hemodynamic indexes was significantly associated with age. Hemodynamic score in 21.3% of the subjects was below 75 points.
  
  
  CONCLUSIONS
  Among population of 40 years old and over in rural areas, hypertension was the principal risk factor regarding the rate of stroke. Prevalence of stroke in males was significantly higher than that in females. Abnormal rate of hemodynamic score was about 20% in this population.
authors.affiliation: Shanghai Institute of Cerebral Vascular Disease Prevention and Care, Shanghai 201318, China.
authors.forename: Gui-qing
authors.initials: GQ
authors.lastname: Wang
authors.forename: Jiu-yi
authors.initials: JY
authors.lastname: Huang
authors.forename: Ji-ping
authors.initials: JP
authors.lastname: Guo
authors.forename: Yi-feng
authors.initials: YF
authors.lastname: Cao
authors.forename: Yong-ju
authors.initials: YJ
authors.lastname: Yang
authors.forename: Xue-hai
authors.initials: XH
authors.lastname: Yu
mesh_terms: D000328:Adult; D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D001921:Brain / Q000098:blood supply; D002681:China / Q000453:epidemiology; D015331:Cohort Studies; D003430:Cross-Sectional Studies; D005260:Female; D006439:Hemodynamics; D006801:Humans; D006973:Hypertension / Q000150:complications / Q000453:epidemiology; D008297:Male; D008875:Middle Aged; D015995:Prevalence; D012307:Risk Factors; D012423:Rural Health; D012494:Sampling Studies; D012737:Sex Factors; D020521:Stroke / Q000453:epidemiology* / Q000503:physiopathology