Data sources that incorporate address information can be assigned latitude and longitude, collector's district (CD), statistical local area (SLA), local government area (LGA) and radius values using purpose-built address parsing software linking to land-based reference datasets.
The following data collections are routinely geocoded and area codes are assigned using the 1996, 2001 and 2006 census boundaries:
- Hospital Morbidity Data Collection (HMDC), post 1993
- Midwives Notifications System (MNS)
- Emergency Department Data Collection (EDDC)
- WA Death Registrations
Collector's District (CD) and SEIFA and ARIA values
A collector's district covers about 200 households and at this level of specificity there could be potential to render other details identifiableWhere the identity of an individual can be reasonably ascertained, e.g. name, address, full date of birth.. Consequently, CD codes are not usually supplied on research data extracts; however SEIFA and/or ARIA values can be provided with HMDC, MNS, EDDC and Death records at CD and SLA level. In most cases SLA, LGA and radius are supplied on data extracts where needed.
If latitude and longitude or CD codes are required for geographic or environmental analyses written justification must be included in the relevant data variable lists.
The Australian Bureau of Statistics (ABS) provides more information on SEIFA:
- 1996 Socio-economic indexes for areas (SEIFA) information paper
- 2001 Socio-economic indexes for areas (SEIFA) information paper
- 2006 Socio-economic indexes for areas (SEIFA) information paper
More information on ARIA is available at:
http://gisca.adelaide.edu.au/