title: [The changing trend of serum total cholesterol in Beijing population aged 25 - 64 years during 1984 - 1999].
abstract: OBJECTIVE
  To describe the changing trend of serum total cholesterol (TC) in Beijing population aged 25 - 64 years old from 1984 to 1999 and to explore the distributions of hypercholesterolemia in different subgroups.
  
  
  METHODS
  From 1984 to 1999, five independent cardiovascular diseases (CVD) risk factors surveys with the same protocol were conducted in Beijing population aged 25 - 64 years. Stratified-random sampling was used.
  
  
  RESULTS
  (1) In the period from 1984 to 1999, the mean level of TC increased 1.058 mmol/L (25.1%) in Beijing population aged 25 - 64. The mean level of TC showed increase trends in different genders and age groups, with the greatest increase of 0.998 mmol/L (25.9%) being in the 25 - 34 age group. The mean level of TC was higher in urban subjects than in rural subjects, whereas the increment of TC level was higher in the rural subjects (32.8%) than in urban subjects (26.3%). (2) The prevalence of hypercholesterolemia increased from 6.1% in 1984 to 29.9% in 1999, with 23.8% of the increase during the 15 years. Among different subgroups, both the lowest prevalence of hypercholesterolemia and the greatest increase of hypercholesterolemia prevalence were shown in men aged 25 - 34 years old, with a 16.4 fold increase in 15 years.
  
  
  CONCLUSIONS
  The increase trends of mean TC level and hypercholesterolemia prevalence were observed in Beijing population during 1984 - 1999, especially in rural subjects and men aged 25 - 34 years old.
authors.affiliation: Department of Epidemiology, Beijing Anzhen Hospital Affiliated to the Capital University of Medical Science, Beijing 100029, China.
authors.forename: Jia-yi
authors.initials: JY
authors.lastname: Sun
authors.forename: Dong
authors.initials: D
authors.lastname: Zhao
authors.forename: Wei
authors.initials: W
authors.lastname: Wang
authors.forename: Jun
authors.initials: J
authors.lastname: Liu
authors.forename: Yan
authors.initials: Y
authors.lastname: Li
authors.forename: Sa
authors.initials: S
authors.lastname: Liu
authors.forename: Yan-na
authors.initials: YN
authors.lastname: Jia
authors.forename: Zhao-su
authors.initials: ZS
authors.lastname: Wu
mesh_terms: D000328:Adult; D017677:Age Distribution; D002318:Cardiovascular Diseases / Q000453:epidemiology*; D002681:China / Q000453:epidemiology; D002784:Cholesterol / Q000097:blood*; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012423:Rural Health; D014505:Urban Population
chemical_list: D002784:Cholesterol