title: [Age at natural menopause in Japanese women].
abstract: OBJECTIVE
  To determine the age at natural menopause in Japanese women.
  
  
  METHODS
  Cross-sectional and retrospective study.
  
  
  METHODS
  Two thousand two hundred twenty one women attending gynecological clinics between the ages of 35 and 59 who were born between April, 1929 and March, 1953.
  
  
  METHODS
  Age of menopause estimated by the rate of the presence of menses at each age, calculated by probit transformation and by reference to the patient's memory.
  
  
  RESULTS
  The median age of menopause based on a cross-sectional study was 50.54, and based on patient's memory is 49.47 +/- 3.53 (SD). The presence of fibroma uteri significantly delays the age of menopause (Odds ratio = 9.41).
authors.affiliation: Department of Obstetrics and Gynecology, Jichi Medical School, Tochigi.
authors.forename: T
authors.initials: T
authors.lastname: Tamada
authors.forename: H
authors.initials: H
authors.lastname: Iwasaki
mesh_terms: D000328:Adult; D000367:Age Factors; D044466:Asian People; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D007564:Japan; D008593:Menopause / Q000502:physiology*; D008875:Middle Aged; D012189:Retrospective Studies