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The 2001 Census is the first Census where usual residence data for Census Night are available at Collection District (CD) level. Previously place of usual residence was only coded to Statistical Local Area (SLA) level. As in the past, if the respondent has given insufficient address information, their SLA of usual residence will be imputed. The CD of usual residence will not be imputed in these cases, but instead will be classified as inadequately described.
In 1996, 'usual residence' was defined in the Question 7 notes as:
For 2001 an additional note was included, 'For persons who usually live in another country and who are visiting Australia for less than one year, mark Other country'.
Change to editing procedures
For the 2001 Census there have been some changes to editing and processing procedures for the variables Usual Address One Year Ago Indicator (UAI1P) and Usual Address Five Years Ago Indicator (UAI5P). These changes will address minor data quality issues identified from the 1996 Census, which affected less than one percent of the population. Further information is available from the 1996 Census fact sheet titled 'Usual Residence Indicator', or by contacting Information Consultancy.
The information acquired from the answers to the usual residence questions is recorded in the variable Postal Area of Usual Address Census Night (POCUCP), and in the usual residence indicator variables:
Use of usual residence indicators, make it possible to identify the pattern of net movement of people between three dates, i.e. Census Night, one year ago and five years ago.
SLA of usual residence one or five years ago
If no code can be allocated for SLA of usual residence one or five years ago, a code of Not Stated is given. The only exceptions to this are where the person is 16 or younger (for usual residence one year ago) or 20 years or younger (for usual residence five years ago) and there is a parent present with the appropriate SLA coded. The SLA code of the parent is then allocated to the person.
The following usual residence variables are available:
People in transit
On Census Night a number of people were enumerated on board vessels in or between Australian ports or on long-distance trains, buses or aircraft. If they gave an address in Australia as their usual residence, they were coded to the CD containing that address. A small number indicated that they were usually resident at the address at which they were enumerated. They were allocated a separate usual residence code describing them as Migratory.
If no adequate response is given for usual residence for persons enumerated in Non-Private Dwellings (e.g. hotels, motels, hospitals) the SLA is imputed using population distribution patterns from the 1996 Census. Similar imputation is done for visitors in private dwellings.
Family and household structures are based on persons usually resident. Temporarily absent persons are used to classify types of relationships and families existing in a household, but they are not used in the derivation of any other census characteristics or in other census output. If all members of a family are absent from their usual residence, no family records are created for them.
Usual Residence data are used by the ABS in calculations of the Estimated Resident Population (ERP). The official ABS population estimate, the ERP is also derived from Census data, and is used as the basis for estimating the population at the national, state and local government levels, for electoral purposes and the distribution of government funds.
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