Comparability (geographic, over time)
While the ASGS will give a better platform for the analysis of time series into the future, it will also create a break in time series based on the ASGC.
The ABS will respond to this issue in several ways:
The ABS will create a series of population and area based concordances between the ASGC regions and the new ASGS regions.
Census data will be available on both the ASGS and ASGC regions in 2011, with the exception of Census Collection Districts (CCDs).
Some historic demographic data will be recast on to the ASGS regions.
It is possible to recast historical Labour Force statistics on to the new Statistical Areas Level 4 (SA4s). The ABS will consult with stakeholders on the most appropriate way of achieving this.
Preserving the ASGC statistical divisions was a criteria in the design of the Statistical Area Level 2 (SA2) of the ASGS. It is therefore possible to reconstruct data for statistical divisions from SA2 data released under the ASGS.
Time series based on CCDs present a particular problem. The ABS Geography Section will advise users with a need to recast CCD based data on the best approach.