Australian Government: Australian Institute of Health and Welfare METeOR Home Page

National Disability Agreement: f-Number of Indigenous people with disability receiving disability services as a proportion of the Indigenous potential population requiring services, 2010 QS

Identifying and definitional attributes

Metadata item type:Help on this termQuality Statement
METeOR identifier:Help on this term410235
Registration status:Help on this termCommunity Services (retired), Superseded 15/12/2011

Relational attributes

Indicators linked to this Quality statement:Help on this term

National Disability Agreement: f-Number of Indigenous people with disability receiving disability services as a proportion of the Indigenous potential population requiring services, 2010 Community Services (retired), Superseded 15/12/2011

Data quality

Quality statement summary:Help on this term

No summary statement provided.

Institutional environment:Help on this termThe AIHW is an Australian Government statutory authority accountable to Parliament and operates under the provisions of the Australian Institute of Health and Welfare Act 1987. The AIHW provides expert analysis of data on health, housing and community services. More information about the AIHW is available on the AIHW website.
For general issues relating to the CSTDA NMDS, refer to the CSTDA NMDS Data Quality Statement.
For information on the institutional environment of the ABS, including the legislative obligations of the ABS, please see ABS Institutional Environment.
Timeliness:Help on this termCSTDA NMDS 2007-08
ABS SDAC 2003; Census 2006; Indigenous projected population at 30 June 2007 (projected population is based on data from the 2006 Census).
Accessibility:Help on this termThe AIHW provides a variety of products that draw upon the CSTDA NMDS. Published products available on the AIHW website are:
• Disability support services (annual report)
• Interactive disability data cubes
• Ad hoc data are available on request (charges apply to recover costs)
• METeOR – online metadata repository
• National Community Services Data Dictionary.
The ABS website provides information and data on the ERP and the Indigenous Project Population, Census Need for Assistance and SDAC profound/ severe core-activity limitation. Detailed data extractions are available through the National Information Referral Service (cost-recovery applies).
Interpretability:Help on this termInformation to assist in interpretation of the performance indicator is contained in the NDA performance indicator glossary, which accompanies these Data Quality Statements.
Supporting information on the quality and use of the CSTDA NMDS are published annually in ‘Disability support services’ available in hard copy or on the AIHW website (<www.aihw.gov.au>).
Relevance:Help on this termData from several different sources, each referencing different time periods, are used to produce performance indicator (f). Data used are from the CSTDA NMDS 2007–08, SDAC 2003, Indigenous Projected Population June 2007, and Census 2006. This may reduce the overall quality of the estimates. Some particular issues are listed in the Relevance section of the Data Quality Statement for performance indicator (c). Additionally,
• Indigeneity was not collected in the SDAC 2003, so a rate ratio adjustment, calculated from information from the Census, is made to the national all person age-sex specific severe/profound core activity limitation rates, as detailed in the Measure section. The use of these adjustments assumes consistency between the rate ratio as calculated from Census information, and the corresponding information if it were collected from the SDAC 2003. Two particular points of note with regards to this assumption are:
1. Information from Census 2006 about people with need for assistance with core activities is based on the self enumeration (interview in Indigenous communities) of four questions, whereas people are defined as having a severe/profound core activity limitation in SDAC 2003 on the basis of a comprehensive interviewer administered module of questions, and thus the two populations are different, although they are conceptually related.
2. ABS research indicates that the Indigenous identification rate differs between the Census and interviewer administered surveys.
• The cultural appropriateness for Indigenous people, of data collection instruments designed for the total population is not known; nor is it known how this, combined with different data collection methods, impacts on the accuracy of the estimated Indigenous potential population used in this indicator.
CSTDA NMDS data are generated by processes that deliver services to people. It is assumed that these processes involve the determination of eligibility and the assessment of disability support needs following broadly consistent principles across jurisdictions. However, this assumption is untested.
The scope of services funded under the CSTDA varied across jurisdictions. Users of specialist psychiatric disability services in Victoria, Queensland and Western Australia are included in the NDA performance indicators. There were 558 Indigenous people aged 0–64 years in Victoria who used only specialist psychiatric disability services in 2007–08, 27 in Queensland and 6 in Western Australia. Other states and territories did not fund specialist psychiatric services under the CSTDA.
Accuracy:Help on this termA potential source of error in the CSTDA NMDS is people for whom Indigenous status is not stated or not collected. The not stated/not collected rate varies across jurisdictions from a low rate of 0.1% for Australian Government agencies, to a high rate of 12.8% for Victorian agencies; the overall rate being 5.2%. See the accompanying appendix for further details. Not stated or not collected Indigenous status may introduce bias into the results affecting both the accuracy of estimates and the comparability of estimates across jurisdictions. In addition, a coding audit of the Indigenous status data item has not been undertaken, thus the accuracy of the rate of Indigenous identification in the NMDS is not known.
For general issues relating to the CSTDA NMDS, refer to the CSTDA NMDS Data Quality Statement.
Being a sample survey, estimates from the SDAC 2003 are subject to sampling variability. A measure of the sampling variability, the relative standard error (RSE) percent was estimated for the age-sex specific rates of severe/profound core activity limitation and can be found in the Accuracy section of the Data Quality Statement for Indicator (c).
The cultural appropriateness for Indigenous people of data collection instruments designed for the total population is not known. Poor cultural sensitivity of data collection instruments is a potential source of non-sampling error which affects the accuracy of Indigenous potential population estimates. The size of this error, if present, cannot be measured.
Potential sources of error in Census include failure to return a Census form or failure to answer every applicable question. Information calculated from Census 2006 data excludes people for whom data item information was not available. Should the characteristics of interest of the people excluded differ from those people included, there is potential for bias to be introduced. In particular for Indigenous estimates, undercounting of Indigenous Australians may introduce bias into the results which would affect the comparability of estimates across jurisdictions. The net Census undercount for all Indigenous Australians was estimated at 11.5%, calculated as the difference between the Census count and estimated Indigenous population on Census night. Estimates of the Indigenous net undercount for all jurisdictions are included below.
Jurisdiction

Undercount rate %

NSW

8.6

Vic

9.4

Qld

11.6

WA

16.6

SA

8.6

Tas.

8.8

ACT

8.8

NT

16.0

Source: ABS Cat no. 3238.0.55.001
Quality statements about Census 2006 data items can be found on the ABS website.
For general issues relating to the SDAC, Census and Indigenous Projected Population, refer to ABS data quality statements, forthcoming.
Coherence:Help on this termFor general issues relating to the CSTDA NMDS, refer to the CSTDA NMDS Data Quality Statement.
There are issues with the consistency of the numerator and denominator for this performance indicator, as the numerator and denominator are drawn from differently defined populations and different data sources. These issues reduce the consistency of the performance indicators and lead to quality issues such as cells greater than 100%. For example, the proportion of the 15–24 year old Victorian Indigenous potential population accessing disability services is reported to be 154.6%. A combination of data quality issues, as discussed in this and previous sections, has led to this impossible figure.
While the numerator is taken from the CSTDA NMDS, the denominator is an estimate derived from SDAC, Indigenous Projected Population and Census data. In the denominator, ‘estimated potential population for specialist disability services’ is defined as the estimated population with severe or profound core activity limitation. However, this does not match well with the numerator, which consists of people who used specialist disability services. People who used these services do not necessarily have a severe or profound core activity limitation (mobility, communication, or self-care). They may instead have a mild/moderate core activity limitation or limitations in other activities—for example, with working or education. This mismatch is more evident in certain types of services, such as open employment services, which are not necessarily tailored towards people with a severe or profound core activity limitation. The definition of potential population for specialist disability services is currently under review.
The method used to calculate the Indigenous potential population estimates will be the same as that adopted by the Disability Services Working Group for calculation of special needs group indicators for the Report on Government Services 2010.
For general issues relating to the SDAC, Census and Indigenous Projected Population, refer to ABS data quality statements, forthcoming.

Data products

Implementation start date:Help on this term20/07/2010

Source and reference attributes

Submitting organisation:Help on this termAIHW

Relational attributes

Related metadata references:Help on this term

Has been superseded by National Disability Agreement: PI d-Proportion of people with disability accessing disability services, 2013 QS Disability, Standard 13/08/2015, Community Services (retired), Standard 23/05/2013

My items Help on this term
Download Help on this term