Database Specific
Database Specific Abstract AbstractThe Australian Census Longitudinal Dataset (ACLD) is Australia's largest longitudinal dataset bringing together a 5% random sample of around one million records from the 2006 Census with corresponding records from the 2011 Census. It provides a unique opportunity for researchers and policy makers to examine pathways and transitions of population groups, such as unemployed individuals transition into the labour force. Over time, the ACLD will continue to grow as records from each new Census are linked which will further enhance its longitudinal view. The ACLD will also be augmented in the future to take account of migration and births that occur between Censuses.
Source Source Contact person/organisation Contact person/organisationFor further information, contact the National Information and Referral Service on 1300 135 070.
Source metadata Source metadataSee Explanatory Notes.
Source Periodicity Source PeriodicityFive yearly.
Data source(s) used Data source(s) usedCensus of Population and Housing, 2006 and 2011.
Data Characteristics Data Characteristics Periodicity PeriodicityFive yearly.
Reference period Reference period2006-2011
Unit of measure used Unit of measure usedCount of persons in scope of both the 2006 and 2011 Censuses.
Population & Scope Population & Scope Geographic coverage Geographic coverageAustralia and States and Territories.
Population coverage Population coverageThe ACLD is a random 5% sample of persons enumerated in Australia on Census Night, 8 August 2006 which has been linked using statistical techniques to corresponding records from the 2011 Census, conducted on 9 August 2011. The Census covers all areas in Australia and includes persons living in both private and non-private dwellings but excluding diplomatic personnel of overseas governments, persons who expected to be usual residents in Australia for less than six months and Australian residents overseas on Census Night. Overseas visitors are excluded from the 2006 ACLD sample.
Statistical population Statistical populationAll persons in scope of both the 2006 and 2011 Censuses.
Concepts & Classifications Concepts & Classifications Classification(s) used Classification(s) usedSee ACLD Data Items List.
Estimation EstimationThe estimates are based on a random 5% sample from the 2006 Census which has been linked to corresponding records from the 2011 Census, and weighted to the in scope population in both years. Estimates of population groups are obtained by summing the weights of persons with the characteristic(s) of interest.
Imputation ImputationWhere a respondent fails to answer a question, a 'not stated' code is allocated during processing, with the exception of non-response to age, sex, marital status and place of usual residence. These variables are needed for population estimates, so are imputed using other information on the Census form.
Key statistical concept Key statistical conceptFor further information on ACLD concepts, methodology and quality assesment, please refer to the Information Paper linked below.
Dissemination format(s) Dissemination format(s)TableBuilder.
Weights WeightsThe ACLD weighting process, benchmarked the linked ACLD records to the population that was in scope of both the 2006 and 2011 Censuses. The weights were based on four components: the design weight, undercoverage adjustment, missed link adjustment and population benchmarking. Please refer to the Information Paper linked below for more details.
Other Aspects Other Aspects Quality comments Quality commentsPlease refer to the Quality Declaration summary linked below.
The Australian Census Longitudinal Dataset (ACLD) is Australia's largest longitudinal dataset bringing together a 5% random sample of around one million records from the 2006 Census with corresponding records from the 2011 Census. It provides a unique opportunity for researchers and policy makers to examine pathways and transitions of population groups, such as unemployed individuals transition into the labour force. Over time, the ACLD will continue to grow as records from each new Census are linked which will further enhance its longitudinal view. The ACLD will also be augmented in the future to take account of migration and births that occur between Censuses.
For further information, contact the National Information and Referral Service on 1300 135 070.
Census of Population and Housing, 2006 and 2011.
Five yearly.
See Explanatory Notes.
Count of persons in scope of both the 2006 and 2011 Censuses.
Five yearly.
2006-2011
All persons in scope of both the 2006 and 2011 Censuses.
Australia and States and Territories.
The ACLD is a random 5% sample of persons enumerated in Australia on Census Night, 8 August 2006 which has been linked using statistical techniques to corresponding records from the 2011 Census, conducted on 9 August 2011. The Census covers all areas in Australia and includes persons living in both private and non-private dwellings but excluding diplomatic personnel of overseas governments, persons who expected to be usual residents in Australia for less than six months and Australian residents overseas on Census Night. Overseas visitors are excluded from the 2006 ACLD sample.
For further information on ACLD concepts, methodology and quality assesment, please refer to the Information Paper linked below.
See ACLD Data Items List.
The estimates are based on a random 5% sample from the 2006 Census which has been linked to corresponding records from the 2011 Census, and weighted to the in scope population in both years. Estimates of population groups are obtained by summing the weights of persons with the characteristic(s) of interest.
Where a respondent fails to answer a question, a 'not stated' code is allocated during processing, with the exception of non-response to age, sex, marital status and place of usual residence. These variables are needed for population estimates, so are imputed using other information on the Census form.
The ACLD weighting process, benchmarked the linked ACLD records to the population that was in scope of both the 2006 and 2011 Censuses. The weights were based on four components: the design weight, undercoverage adjustment, missed link adjustment and population benchmarking. Please refer to the Information Paper linked below for more details.
TableBuilder.
Please refer to the Quality Declaration summary linked below.