4727.0.55.002 - Australian Aboriginal and Torres Strait Islander Health Survey: Users' Guide, 2012-13
ARCHIVED ISSUE Released at 11:30 AM (CANBERRA TIME) 27/11/2013 First Issue
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This document was added or updated on 17/07/2015. ABSOLUTE RISK
For the Absolute Risk data item, the following section outlines the:
For information on the data used to derive this item (as outlined below), refer to the relevant topic pages in this Users' Guide. Definition For the purposes of deriving this item the following definitions were used: Diabetes status Diabetes status was determined based on the Diabetes prevalence - HbA1c (%) data item. Self reported prior cardiovascular disease People who reported having had a stroke, heart attack or heart disease were classified as Automatic High Risk - prior CVD. For self reported prior cardiovascular disease, the following conditions were required to have been diagnosed and also be current and long-term (condition status 1):
Incomplete data People who participated in the Biomedical component but had partial or incomplete results for some of the tests. Population The population for this topic are respondents aged 18 years and over who participated in the biomedical component of both the National Aboriginal and Torres Strait Islander Health Survey (NATSIHS) and the National Aboriginal and Torres Strait Islander Nutrition and Physical Activity Survey (NATSINPAS). Methodology The calculation for Absolute Risk for the Australian Aboriginal and Torres Strait Islander Health Survey is based on the calculation requirements outlined by the National Vascular Disease Prevention Alliance, with some modifications to account for survey content differences. For more details regarding Absolute Risk calculations, refer to http://www.cvdcheck.org.au/. Absolute Risk is calculated using a combination of blood test results, demographic information and self reported information on cardiovascular disease. These input factors go into a weighted multiplicative formula to give an Absolute Risk score, expressed as a percentage. The input factors used in the Absolute Risk algorithm are:
An Aboriginal or Torres Strait Islander person is classified as Automatic High Risk (greater than 15%) if they satisfy any of the following:
Note that if a respondent could be classified into the Automatic High Risk (greater than 15%) and Automatic High Risk - prior CVD, then the Automatic High Risk - prior CVD category took precedence. A percentage score of Absolute Risk is calculated for those individuals who do not meet any of the criteria for Automatic High Risk, based on these input factors:
People who participated in the Biomedical component but had partial or incomplete results for some of the tests will generally be classified as Unable to calculate. However, as a score can still be assigned due to meeting a requirement for the automatic classification to the Automatic High Risk status categories, or using the available components, people with incomplete or missing results can still be assigned a risk score. An Absolute Risk Incomplete Data Flag has been created to remove these people from the calculations if desired.
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