title: [A 1:2 matched case-control study on the risk factors of uterine myomas].
abstract: OBJECTIVE
  To investigate the risk factors and their association with Uterine myomas.
  
  
  METHODS
  A 1:2 matched case-control study was carried out in Guangzhou including 211 cases and 422 controls. Data were analyzed with conditional logistic regression.
  
  
  RESULTS
  Results showed that Pelvic inflammatory, Erosion of Cervix, Menopathy, Adnexitis and family history of Uterine myomas were identified as risk factors, with odds ratios of 3.101, 2.904, 3.942, 7.742 and 2.426 respectively while delayed menstruation was proved to be a preventive factor, with odds ratios of 0.841.
  
  
  CONCLUSIONS
  Uterine myomas seemed to be related to Pelvic inflammatory, Erosion of Cervix, Adnexitis, Menopathy and family history of Uterine myomas.
authors.affiliation: Department of Epidemiology, Guangdong Pharmacial College, Guangzhou 510224, China.
authors.forename: Y
authors.initials: Y
authors.lastname: Xu
authors.forename: S
authors.initials: S
authors.lastname: Chen
authors.forename: C
authors.initials: C
authors.lastname: Zhu
authors.forename: L
authors.initials: L
authors.lastname: Yang
mesh_terms: D000328:Adult; D016022:Case-Control Studies; D005260:Female; D006801:Humans; D007889:Leiomyoma / Q000209:etiology* / Q000235:genetics; D016015:Logistic Models; D008875:Middle Aged; D015999:Multivariate Analysis; D000292:Pelvic Inflammatory Disease / Q000150:complications; D014594:Uterine Neoplasms / Q000209:etiology* / Q000235:genetics