title: [The trend of incidence rate of acute stroke event in urban areas, Beijing from 1984 to 1999].
abstract: OBJECTIVE
  To estimate the trend of incidence rate of acute stroke event in the population aged 25-74 in urban areas of Beijing from 1984 to 1999.
  
  
  METHODS
  All stroke events in defined population were ascertained and validated according to unified protocol and criteria. A total number of 6,553 stroke events were analyzed, crude rates and aged-standardized rates for all stroke events and first-ever stroke events were calculated for whole calendar years for the population. Temporal annual rates of stroke were estimated for 16 years.
  
  
  RESULTS
  Annual stroke attack rates increased both in men and women with an average annual percentage changes 4.5% and 4.2%, respectively. Annual first-ever stroke incidence rate increased both in men and women with average annual percentage changes 4.1% and 4.2%, respectively. Most remarkable increase was noticed in the 65-69 and 70-74 age groups.
  
  
  CONCLUSIONS
  Rates of stroke attack incidence and first-ever incidence were increasing in the population of urban in Beijing, indicating the prevention of stroke be strengthened in the area.
authors.affiliation: Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing 100029, China.
authors.forename: W
authors.initials: W
authors.lastname: Wang
authors.forename: D
authors.initials: D
authors.lastname: Zhao
authors.forename: G
authors.initials: G
authors.lastname: Wu
mesh_terms: D000328:Adult; D000367:Age Factors; D000368:Aged; D002681:China / Q000453:epidemiology; D005260:Female; D006801:Humans; D015994:Incidence; D008297:Male; D008875:Middle Aged; D017678:Sex Distribution; D020521:Stroke / Q000453:epidemiology*