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*Note that the cut-off recommended in the position statement is <12.5 nmol/L, but the NATSIHMS is unable to output against this cut-off as the Vitamin D data is only available in whole numbers.
# Note that the position statement states that levels may need to be 10 to 20 nmol/L higher at the end of summer, to allow for seasonal decrease.
Further information about the analysis method and machines used to measure vitamin D levels are available in Excel spreadsheet format in the Downloads page of this product.
The data items and related output categories for this topic are available in Excel spreadsheet format from the Downloads page of this product.
Points to be considered when interpreting data for this topic include the following:
Comparability with other surveys
The NATSIHMS is the first ABS Aboriginal and Torres Strait Islander survey to collect biomedical information. Given it was also the first national level survey (ABS or otherwise) to collect such data for the Aboriginal and Torres Strait Islander population, no comparisons with previous surveys for this population are possible.
However, biomedical data was also collected for all Australians in the 2011-12 National Health Measures Survey (NHMS) and information about comparisons between the NHMS results and those of non-ABS surveys is available from the Comparisons with other Australian surveys section of the Biomedical Results for Chronic Diseases, 2011-12 publication.
The Australian Aboriginal and Torres Strait Islander Health Survey (AATSIHS) 2012-13, which is part of the Australian Health Survey 2011-13, is currently one of eight national surveys participating in the international Vitamin D Standardization Program (VSDP), which aims to standardise the measurement of vitamin D across all laboratories to enable the transfer of findings to patient care and public health activities.5 For more information on the VDSP and it's progress, see details on the National Institutes of Health website.
1 Nowson CA, McGrath JJ, Ebeling PR, Haikerwal A, Daly RM, Sanders KM Seibel MJ & Mason RS, 2012, Vitamin D and health in adults in Australia and New Zealand: a position statement. Medical Journal of Australia, 196:686-687, <https://www.mja.com.au/journal/2012/196/11/vitamin-d-and-health-adults-australia-and-new-zealand-position-statement>, Last accessed 08/19/2014.
2 Gibson RS, 2005, Principles of Nutritional Assessment, 2nd ed, New York: Oxford University Press.
3 The Royal College of Pathologists of Australasia, May 2013, Position statement; Use and Interpretation of Vitamin D testing, <http://www.aims.org.au/documents/item/347>, Last accessed 08/19/2014.
4 Matsuoka LY, Wortsman J, Haddad JG, Kolm P, Hollis BW, 1991, Racial pigmentation and the cutaneous synthesis of vitamin D, Archives of Deteratology, <http://www.ncbi.nlm.nih.gov/pubmed/1848745?dopt=Abstract>, Last accessed 08/19/2014.
5 National Institutes of Health Office of Dietary Supplements, 2013,Vitamin D Standardization Program (VDSP) Symposium: Tools to Improve Laboratory Measurement, U.S. Department of Health and Human Services, <http://ods.od.nih.gov/News/VDSPSymposium_2013.aspx>, Last accessed 08/19/2014.