Prevalence of vitamin D deficiency and its determinants in Australian adults aged 25 years and older : a national, population-based study Daly, Robin M., Gagnon, Claudia, Lu, Zhong X., Magliano, Dianna J., Dunstan, David W., Sikaris, Ken A., Zimmet, Paul Z., Ebeling, Peter R. and Shaw, Jonathan E. 2012, Prevalence of vitamin D deficiency and its determinants in Australian adults aged 25 years and older : a national, population-based study, Clinical endocrinology, vol. 77, no. 1, pp. 26-35, doi: 10.1111/j.1365-2265.2011.04320.x. Attached Files Name Description MIMEType Size Downloads Title Prevalence of vitamin D deficiency and its determinants in Australian adults aged 25 years and older : a national, population-based study Author(s) Daly, Robin M. orcid.org/0000-0002-9897-1598 Gagnon, Claudia Lu, Zhong X. Magliano, Dianna J. Dunstan, David W. Sikaris, Ken A. Zimmet, Paul Z. Ebeling, Peter R. Shaw, Jonathan E. Journal name Clinical endocrinology Volume number 77 Issue number 1 Start page 26 End page 35 Total pages 10 Publisher Wiley-Blackwell Publishing Ltd Place of publication Oxford, England Publication date 2012-07 ISSN 0300-0664 Keyword(s) vitamin D deficiency health problem adults Australia Summary Objective  Vitamin D deficiency is recognized as a global public health problem, but the population-based prevalence of deficiency and its determinants in Australian adults is not known. This study evaluated the vitamin D status of Australian adults aged ≥25 years and risk factors associated with vitamin D deficiency in this population. Design and Patients  We studied a national sample of 11 247 Australian adults enrolled in the 1999/2000 Australian Diabetes, Obesity and Lifestyle (AusDiab) study drawn from 42 randomly selected districts throughout Australia. Measurements  Serum concentrations of 25-hydroxyvitamin D [25(OH)D] were measured by immunoassay. Vitamin D deficiency was defined as a concentration <50 nmol/l. Information on demographic and lifestyle factors was derived from interview-administered questionnaires. Results  The mean serum 25(OH)D concentration was 63 nmol/l (95% CI: 59–67 nmol/l). Only 4% of the population had a level <25 nmol/l, but the prevalence of vitamin D deficiency (<50 nmol/l) was 31% (22% men; 39% women); 73% had levels <75 nmol/l. The prevalence of vitamin D deficiency increased significantly with age, was greater in women, in those of non-Europid origin, in the obese and those who were physically inactive and with a higher level of education. Deficiency was also more common during winter and in people residing in southern Australia (latitude >35°S); 42% of women and 27% of men were deficient during summer–autumn, which increased to 58% and 35%, respectively, during winter–spring. Conclusion  Vitamin D deficiency is common in Australia affecting nearly one-third of adults aged ≥25 years. This indicates that strategies are needed at the population level to improve vitamin D status of Australians. Language eng DOI 10.1111/j.1365-2265.2011.04320.x Field of Research 110306 Endocrinology Socio Economic Objective 920599 Specific Population Health (excl. Indigenous Health) not elsewhere classified HERDC Research category C1 Refereed article in a scholarly journal Grant ID NHMRC 425849 Copyright notice ©2011, Blackwell Publishing Ltd. Persistent URL http://hdl.handle.net/10536/DRO/DU:30046125 Document type: Journal Article Collections: Faculty of Health School of Exercise and Nutrition Sciences Institute for Physical Activity and Nutrition Related Links Link Description Connect to published version (restricted access) Go to link with your DU access privileges     Unless expressly stated otherwise, the copyright for items in DRO is owned by the author, with all rights reserved. Versions Version Filter Type Tue, 17 Jul 2012, 09:52:48 EST Tue, 17 Jul 2012, 15:33:08 EST Tue, 17 Jul 2012, 15:35:39 EST Wed, 18 Jul 2012, 09:01:04 EST Wed, 17 Oct 2012, 09:38:30 EST Filtered Full Citation counts:   Cited 186 times in TR Web of Science Cited 193 times in Scopus Search Google Scholar Access Statistics: 642 Abstract Views, 3 File Downloads  -  Detailed Statistics Created: Tue, 17 Jul 2012, 09:52:34 EST by Jane Moschetti

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