2033.0.55.001 - Census of Population and Housing: Socio-Economic Indexes for Areas (SEIFA), Australia, 2011 Quality Declaration
ARCHIVED ISSUE Released at 11:30 AM (CANBERRA TIME) 28/03/2013
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The Index of Relative Socio-economic Advantage and Disadvantage (IRSAD) summarises information about the economic and social conditions of people and households within an area, including both relative advantage and disadvantage measures.
Interpretation of Index Scores (IRSAD)
A low score indicates relatively greater disadvantage and a lack of advantage in general. For example, an area could have a low score if there are (among other things):
- many households with low incomes, or many people in unskilled occupations
- few households with high incomes, or few people in skilled occupations
A high score indicates a relative lack of disadvantage and greater advantage in general. For example, an area may have a high score if there are (among other things):
- many households with high incomes, or many people in skilled occupations
- few households with low incomes, or few people in unskilled occupations
This index is preferred in situations where the user:
- wants a general measure of advantage and disadvantage in their particular analysis
- is not looking at only disadvantage and lack of disadvantage
- wants advantage to offset any disadvantage in an area.
An example would be where a user:
- considers the issue being examined to be affected by both advantage and disadvantage
- is analysing information that is not included in the index, such as home ownership.
We do not recommend using this index if the user:
- is analysing information that has already been included in the index, such as suburbs with a high proportion of dwellings paying high levels of rent
- is only interested in disadvantage.
The variables that are included in the index can be found below. Each variable has a loading that indicates the correlation of that variable with the index. A positive loading indicates an advantaging variable where as a negative loading indicates a disadvantaging variable.
FINAL VARIABLE LIST
Note - The loadings are closely related to the variable weights used in the construction of the index. For details, please refer to Chapter 4.1 in the Technical Paper.
The table below shows variables that were initially considered for the index, but were subsequently dropped (excluded) due to low loadings (not adding enough value to the final index). For more information, please refer to Chapter 4.3 in the Technical Paper.
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