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LOW DENSITY LIPOPROTEIN (LDL) CHOLESTEROL LDL cholesterol (mmol/L) = Total cholesterol – HDL cholesterol - Triglyceride/2.2 In the NATSIHMS, cut off reference values for normal and abnormal results were sourced from the 2005 position statement2 on lipid management by the National Heart Foundation Australia and the Cardiac Society of Australia and New Zealand (NHFA/CSANZ). These guidelines are based on epidemiological data and publications of major clinical trials. In the NATSIHMS, the following definitions were used for LDL cholesterol:
Further test information about the analysis method and machine used to measure lipid levels is available in Excel spreadsheet format in the Downloads page of this product. Data items The data items and related output categories for this topic are available in Excel spreadsheet format from the Downloads page of this product. Interpretation 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. ENDNOTES 1 National Heart Foundation of Australia, 2013, Cholesterol, <http://www.heartfoundation.org.au/SiteCollectionDocuments/NAHU-Cholesterol.pdf>, Last accessed 08/09/2014. 2 National Heart Foundation of Australia and the Cardiac Society of Australia and New Zealand, 2005, Position Statement on Lipid Management - 2005, <http://www.heartfoundation.org.au/sitecollectiondocuments/the-lipid-position-statement.pdf>, Last accessed 08/09/2014. 3 Friedewald WT, Levy RI, Fredrickson DS,1972, Estimation of the low-density lipoprotein cholesterol in plasma without use of preparative ultracentrifuge, <http://www.clinchem.org/content/18/6/499.full.pdf>, Last accessed 08/09/2014. 4 Appleton CA, Caldwell G, McNeil A, Meerkin M, Sikaris K, Sullivan DR, Thomas DW, and DP Tognarini, Australian Pathology Lipid Interest Group, 2007, Recommendations for Lipid Testing and Reporting by Australian Pathology Laboratories, <http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1904423/>, Last accessed 08/09/2014.
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