title: Determining the prevalence of osteoporosis and related factors using quantitative ultrasound in Vietnamese adult women.
abstract: In 2003, the authors conducted a population-based, cross-sectional survey to determine the prevalence of osteoporosis and related factors in Vietnamese adult women by using quantitative ultrasound at the heel bone (calcaneus). A total of 2,232 adult women aged > or =20 years, living in Hanoi City, and free of illnesses affecting bone metabolism were randomly selected to participate in the study. Subjects' bone mass was assessed by speed of sound at the calcaneus, referred to as quantitative ultrasound measurement. The T-score threshold, defined as < or =-1.8, was used to identify subjects with osteoporosis. The crude prevalence of osteoporosis in Hanoi City was 15.4%; after adjustment for age, it was 9.0%. Among premenopausal women, the crude prevalence of osteoporosis was higher in the urban areas compared with the rural areas. By contrast, postmenopausal women in the rural areas had a higher prevalence of osteoporosis. Multiple logistic regression analysis revealed that factors associated with low speed of sound were age, menopause, educational level, lifelong occupation, recreational weight-bearing exercise, number of births, and height. Results suggest that osteoporosis is a noteworthy problem in Vietnam, and intervention strategies should be considered to control it, especially in high-risk populations.
authors.affiliation: Division of International Public Health Nutrition, Institute of Health Biosciences, University of Tokushima Graduate School, Tokushima 770-8503, Japan.
authors.forename: Thi Thu Hien
authors.initials: TT
authors.lastname: Vu
authors.forename: Cong Khan
authors.initials: CK
authors.lastname: Nguyen
authors.forename: Thi Lam
authors.initials: TL
authors.lastname: Nguyen
authors.forename: Bach Mai
authors.initials: BM
authors.lastname: Le
authors.forename: DucSon
authors.initials: D
authors.lastname: NguyenTrung Le
authors.forename: Thi Nhung
authors.initials: TN
authors.lastname: Bui
authors.forename: Masayo
authors.initials: M
authors.lastname: Nakamori
authors.forename: Daisuke
authors.initials: D
authors.lastname: Kunii
authors.forename: Tohru
authors.initials: T
authors.lastname: Sakai
authors.forename: Shigeru
authors.initials: S
authors.lastname: Yamamoto
mesh_terms: D000328:Adult; D017677:Age Distribution; D000368:Aged; D000369:Aged, 80 and over; D002111:Calcaneus / Q000000981:diagnostic imaging; D003430:Cross-Sectional Studies; D005260:Female; D006304:Health Status; D006801:Humans; D008875:Middle Aged; D009790:Occupations; D010024:Osteoporosis / Q000000981:diagnostic imaging / Q000453:epidemiology*; D011159:Population Surveillance / Q000379:methods*; D017698:Postmenopause; D015995:Prevalence; D012307:Risk Factors; D012423:Rural Health; D011795:Surveys and Questionnaires; D014463:Ultrasonography; D014744:Vietnam / Q000453:epidemiology