title: [Epidemiological study on the prevalence of cervical intraepithelial neoplasia among married women aged 25-54 years in Beijing between 2007-2008].
abstract: OBJECTIVE
  To investigate prevalence of cervical intraepithelial neoplasia (CIN) among the married women aged 25-54 years in Beijing.
  
  
  METHODS
  With method of cross sectional survey, 6339 married women at age of 25 to 54 years were selected randomly in 137 communities of 12 districts or counties in Beijing from March 2007 to September 2008. The cervical smear cytology and high-risk human papillomavirus (HPV) infection of cervical secretion were detected. Women with abnormal cervical cytology were underwent colposcopy and cervical biopsy.
  
  
  RESULTS
  Among 6339 women, 9.58% (607/6339) cases had abnormal cytological results, the colposcopy and cervical biopsy showed the rate of CIN was 5.84% (370/6339) in total selected women and 60.96% (370/607) in women with abnormal cervical cytology, including 4.65%(295/6339) in CIN I, 0.80% (51/6339) in CIN II, 0.38% (24/6339) in CIN III; 0.06% (4/6339) in early invasive carcinoma (SCC). Based on geographical distribution, the rate of cervical lesions was 4.46% (42/942) in urban areas, 6.27% (188/3000) in suburbs and 6.01% (144/2397) in outer suburbs (P > 0.05).
  
  
  CONCLUSIONS
  It was found that the incidence of CIN was 5.84% in married women aged 25-54 years in Beijing, which did not show significant prevalence in urban, suburb and outer suburbs region.
authors.affiliation: Department of Obstetrics and Gynecology, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing 100026, China. zhangwy9921@hotmail.com
authors.forename: Wei-yuan
authors.initials: WY
authors.lastname: Zhang
authors.forename: Ming-hui
authors.initials: MH
authors.lastname: Wu
authors.forename: Song-wen
authors.initials: SW
authors.lastname: Zhang
authors.forename: Bao-li
authors.initials: BL
authors.lastname: Zhou
authors.forename: Chang-dong
authors.initials: CD
authors.lastname: Li
authors.forename: Jian-dong
authors.initials: JD
authors.lastname: Wang
authors.forename: Li
authors.initials: L
authors.lastname: Zhu
authors.forename: Jing
authors.initials: J
authors.lastname: Pan
mesh_terms: D000328:Adult; D001706:Biopsy / Q000379:methods; D002294:Carcinoma, Squamous Cell / Q000453:epidemiology / Q000473:pathology / Q000821:virology; D002681:China / Q000453:epidemiology; D003127:Colposcopy; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D008875:Middle Aged; D027383:Papillomaviridae / Q000302:isolation & purification; D030361:Papillomavirus Infections / Q000175:diagnosis / Q000453:epidemiology; D011230:Precancerous Conditions / Q000453:epidemiology* / Q000473:pathology / Q000821:virology; D015995:Prevalence; D012307:Risk Factors; D012494:Sampling Studies; D011795:Surveys and Questionnaires; D002583:Uterine Cervical Neoplasms / Q000453:epidemiology* / Q000473:pathology / Q000821:virology; D014626:Vaginal Smears; D002578:Uterine Cervical Dysplasia / Q000453:epidemiology* / Q000473:pathology / Q000821:virology