title: Prevalence and risk factors of type 2 diabetes in older Vietnam-born Australians.
abstract: Vietnamese immigrants in Australia represent the second largest Vietnamese community in developed countries, following the United States. However, limited information is available about prevalence of type 2 diabetes (T2D) and the relative roles of socio-demographic characteristics, lifestyle factors, and Vietnamese ethnicity per se in this population. This study investigated the prevalence of T2D and its risk factors in older Vietnam-born Australians, in comparison to native-born Australians. The study used baseline questionnaire data from 787 Vietnam- and 196,866 Australia-born individuals (≥45 years), who participated in the 45 and Up Study, which is Australia's largest population-based cohort study. Country of birth specific prevalence of T2D and its risk factors were age-standardised to the 2006 Australian population (≥45 years). Multivariable logistic regression models were built for each group to assess the relationship between T2D and socio-demographic characteristics, family history of diabetes, lifestyle factors and health status. Compared to Australia-born counterparts, Vietnam-born individuals had significantly (p < 0.001) higher age-standardised prevalence of T2D (14.7 vs 7.4 %) and significantly (p < 0.001) lower levels of vegetable consumption (≥5 serves/day, 19.4 vs 33.5 %), physical activity (≥5 sessions/week, 68.7 vs 78.5 %) and overweight and obesity (body mass index ≥25 kg/m(2), 21.5 vs 62.7 %). The increased risk of T2D associated with a family history of diabetes for Vietnam-born people [adjusted odds ratio (OR) 7.14, 95 % CI 4.15-12.28] was almost double that for Australia-born people (OR 3.77, 95 % CI 3.63-3.90). The patterns of association between T2D and other factors were similar between the two groups. The findings suggest a genetic predisposition to T2D in people of Vietnamese ethnicity. Reducing lifestyle risk factors for diabetes and better management of diabetes are priorities for Vietnam-born populations.
authors.affiliation: Centre for Health Research, School of Medicine, University of Western Sydney, Building 3, Campbelltown Campus, Locked Bag 1797, Penrith, NSW, 2751, Australia, D.Tran@uws.edu.au.
authors.forename: Duong Thuy
authors.initials: DT
authors.lastname: Tran
authors.forename: Louisa R
authors.initials: LR
authors.lastname: Jorm
authors.forename: Maree
authors.initials: M
authors.lastname: Johnson
authors.forename: Hilary
authors.initials: H
authors.lastname: Bambrick
authors.forename: Sanja
authors.initials: S
authors.lastname: Lujic
mesh_terms: D000368:Aged; D001315:Australia / Q000453:epidemiology; D015992:Body Mass Index; D003924:Diabetes Mellitus, Type 2 / Q000208:ethnology*; D004032:Diet / Q000208:ethnology; D054242:Emigrants and Immigrants / Q000706:statistics & numerical data*; D015444:Exercise; D005260:Female; D006304:Health Status; D006801:Humans; D008019:Life Style; D008297:Male; D008875:Middle Aged; D009765:Obesity / Q000208:ethnology; D050177:Overweight / Q000208:ethnology*; D015995:Prevalence; D011788:Quality of Life; D012307:Risk Factors; D057566:Self Report; D012959:Socioeconomic Factors; D014744:Vietnam / Q000208:ethnology
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