title: [Prevalence and associated factors of osteoporosis among postmenopausal women in Chuncheon: Hallym Aging Study (HAS)].
abstract: OBJECTIVE
  A community-based, cross-sectional survey was conducted to determine theprevalence of osteoporosis and to evaluate the effects of body composition, health behaviors and reproductive history on bone density in postmenopausal women.
  
  
  METHODS
  The study subjects were 362 postmenopausal women, aged 45 years old or over, who were invited to the hospital. Information on their socio-demographic characteristics and the potential risk factors such as their past medical history, smoking, alcohol intake, exercise, diet and menstrual/reproductive histories were collected by trained interviewers. Weight, height, the body mass index (kg/m2), and body composition variables were measured. Bone mineral density of the lumbar spine was measured by dual energy X-ray absorptiometry (DXA).
  
  
  RESULTS
  The prevalence of osteoporosis was 30.6% in the 45-64 years old women, 52.5% in the elderly women aged 65-74, and 68.7% in the women aged 75 years or over. After adjustment for the effect of potential covariates, those women in the highest 25% (4th quartile) of the lean body mass are less likely to have osteoporosis (aOR=0.31, 95% CI=0.12-0.76), compared with the lowest quartile group. More parity also had significantly detrimental effects on osteoporosis.
  
  
  CONCLUSIONS
  These findings suggest that the prevalence of osteoporosis in postmenopausal women increased with age from 46.3% of those aged 45-64 to 68.7% for those aged 75 and over. Lean body mass and parity appeared significant contributor to bone mineral density in postmenopausal women in this population.
authors.affiliation: Institute of Health and Environment, Seoul National University.
authors.forename: Soong-Nang
authors.initials: SN
authors.lastname: Jang
authors.forename: Young-Ho
authors.initials: YH
authors.lastname: Choi
authors.forename: Moon-Gi
authors.initials: MG
authors.lastname: Choi
authors.forename: Sung-Hyun
authors.initials: SH
authors.lastname: Kang
authors.forename: Jin-Young
authors.initials: JY
authors.lastname: Jeong
authors.forename: Yong-Jun
authors.initials: YJ
authors.lastname: Choi
authors.forename: Dong-Hyun
authors.initials: DH
authors.lastname: Kim
mesh_terms: D000368:Aged; D000375:Aging; D001837:Body Weights and Measures; D015519:Bone Density; D003430:Cross-Sectional Studies; D005260:Female; D015438:Health Behavior; D006801:Humans; D007723:Korea / Q000453:epidemiology; D008875:Middle Aged; D015663:Osteoporosis, Postmenopausal / Q000453:epidemiology* / Q000503:physiopathology; D015995:Prevalence; D017584:Reproductive History; D012307:Risk Factors; D012959:Socioeconomic Factors