title: Factors associated with menopausal age in Iranian women: Tehran Lipid and Glucose Study.
abstract: OBJECTIVE
  Menopause, considered a special event in a woman's life, has a wide age range, 40-60 years, and there is no consensus regarding the factors influencing it. We aimed to assess factors affecting the menopausal age in a population of women participants of the Tehran Lipid and Glucose Study.
  
  
  METHODS
  For the present study, 1114 women were selected from among participants of the Tehran Lipid and Glucose Study. Following implementation of our inclusion criteria, their reproductive histories and demographic background as well as anthropometric parameters were assessed, and ordinal regression analysis was conducted using spss version 15.
  
  
  RESULTS
  The mean estimated age at menopause ± standard deviation was 49.6 ± 4.5 years. Menopausal age was considerably lower among women with a history of smoking (P = 0.05), and it increased with increasing age of menarche (P = 0.04) and number of children (P = 0.05). There was no significant correlation between the mean age of menopause and the educational level and anthropometric parameters.
  
  
  CONCLUSIONS
  The smoking status, parity and the age of menarche are the influencing factors of age at menopause among the Iranian population.
authors.affiliation: Reproductive Endocrinology Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
authors.forename: Maryam
authors.initials: M
authors.lastname: Farahmand
authors.forename: Fahimeh Ramezani
authors.initials: FR
authors.lastname: Tehrani
authors.forename: Leila
authors.initials: L
authors.lastname: Pourrajabi
authors.forename: Masood
authors.initials: M
authors.lastname: Najafi
authors.forename: Fereidoun
authors.initials: F
authors.lastname: Azizi
mesh_terms: D000328:Adult; D000368:Aged; D000375:Aging; D015331:Cohort Studies; D005260:Female; D006801:Humans; D007492:Iran; D008572:Menarche / Q000208:ethnology; D008593:Menopause / Q000208:ethnology; D008594:Menopause, Premature / Q000208:ethnology; D008875:Middle Aged; D010298:Parity; D011446:Prospective Studies; D012907:Smoking / Q000009:adverse effects