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3235.3 - Population by Age and Sex, Queensland, Jun 2000  
Latest ISSUE Released at 11:30 AM (CANBERRA TIME) 28/06/2001   
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  • Explanatory Notes

INTRODUCTION

1 This publication contains the preliminary estimates of the age and sex distribution of the resident population for Statistical Divisions (SDs), Statistical Subdivisions (SSDs), Statistical Local Areas (SLAs), legal Local Government Areas (LGAs) and Statistical Districts (S Dist.) in Queensland at 30 June 2000.

2 The estimated resident population (ERP) is the official ABS estimate of the Australian population.


METHODOLOGY

3 The total population of each SLA is based on results of the 1996 Population Census and calculated for post-census dates by a linear regression model which uses independent indicators of population change such as dwelling approvals and medicare enrolments. These intercensal estimates of the resident population are revised each time a population census is taken.

4 The age and sex estimates were prepared using the cohort component method. Post-censal age distributions were obtained by advancing the age and sex estimates for 30 June 1996 to the next age, subtracting deaths and adding births and net estimated inter-regional and overseas migration. Inter-regional and overseas migration was estimated from analysis of arrivals and departures data and individual SLA profiles derived from the 1996 Census.

5 After each Census, final estimates for the preceding intercensal period are calculated by incorporating an additional adjustment (intercensal discrepancy) to ensure that the total intercensal increase at each age agrees with the difference between the estimated resident population at the two respective census dates.

6 A detailed explanation of the concept of estimated resident population, as adopted by the Australian Bureau of Statistics (ABS) for official population estimates, is contained in the ABS Information Paper: Population Estimates: Concepts, Sources and Methods, 1995 (Cat. no. 3228.0). This paper is also available via the Themes/Demography section of the ABS website.


RELIABILITY

7 In recognition of the inherent inaccuracy involved in population estimation, population figures over 1,000 in the text are rounded to the nearest hundred, and figures less than 1,000 are rounded to the nearest ten. While unrounded figures are provided in tables, accuracy to the last digit is not claimed and should not be assumed.


AVERAGE ANNUAL RATE OF GROWTH

8 The average annual rate of population growth, r, is calculated as a percentage using the formula below where P0 is the population at the start of the period, Pn is the population at the end of the period and n is the length of the period between Pn and P0 in years.




GEOGRAPHIC BOUNDARIES

9 The geographic areas used in this publication are defined in the Australian Standard Geographical Classification (ASGC), 2000 (Cat. no. 1216.0).


ACKNOWLEDGEMENT

10 ABS publications draw extensively on information provided freely by individuals, businesses, governments and other organisations. Their continued cooperation is very much appreciated: without it, the wide range of statistics published by the ABS would not be available. Information received by the ABS is treated in strict confidence as required by the Census and Statistics Act 1905.


POPULATION PROJECTIONS

11 The ABS compiles and publishes Population Projections, Australia 1999 to 2101 (Cat. no. 3222.0). The ABS can also prepare ad hoc population projections. Further details regarding the population projections service may be obtained by calling the National Information Service on 1300 135 070.


RELATED PUBLICATIONS

12 Other publications which may be of interest include:

  • Australian Demographic Statistics (quarterly) (Cat. no. 3101.0)
  • Australian Demographic Trends (Cat. no. 3102.0)
  • Births, Australia (Cat. no. 3301.0)
  • Census of Population and Housing: Selected Social and Housing Characteristics for Statistical Local Areas, Queensland (Cat. no. 2015.3)
  • Deaths, Australia (Cat. no. 3302.0)
  • Demography, Queensland (Cat. no. 3311.3)
  • Population by Age and Sex, Australian States and Territories (Cat. no. 3201.0)
  • Population Projections, Australia, States and Territories, 1999 to 2101 (Cat. no. 3222.0)
  • Regional Population Growth, Australia and New Zealand (Cat. no. 3218.0)

13 Current publications produced by the ABS are listed in the Catalogue of Publications and Products (Cat. no. 1101.0). The ABS also issues on Tuesdays and Fridays a Release Advice (Cat. no. 1105.0) which lists publications to be released in the next few days. The Catalogue and Release Advice are available from any ABS office.


DATA AVAILABLE ON REQUEST

14 The ABS also has other unpublished statistics available including ERP age-sex data by single year of age. Inquiries should be made to the National Information Service on 1300 135 070.


FINAL ISSUE

15 This is the final published issue of Population by Age and Sex, Queensland (Cat. no. 3235.3). In future years the age-sex data will be made available in electronic format in a SuperTABLE dataset as companion data in AusStats. Data at all levels within the Australian Standard Geographical Classification main structure will be included, as well as Local Government Areas. The new companion data will also effectively replace Estimated Resident Population by Age and Sex in Statistical Local Areas, Queensland: Data on Floppy Disk (Cat. no. 3227.3). Non-AusStats users can obtain this data by contacting Client Services (see back page of this publication for details)


GLOSSARY

Dependency ratio

The dependency ratio relates to the number of children aged 0-14 years and persons aged 65 years and over per 100 persons aged 15-64 years.

Estimated resident population (ERP)

Estimated resident population data are estimates of the Australian population obtained by adding to the estimated population at the beginning of each period the components of natural increase (on a usual residence basis) and net overseas migration. For the States and Territories, account is also taken of estimated interstate movements involving a change of usual residence. After each census, estimates for the preceding intercensal period are revised by incorporating an additional quarterly adjustment (intercensal discrepancy) to ensure that the total intercensal increase agrees with the difference between the estimated resident populations at the two respective census dates.
Estimates of the resident population are based on adjusted (for underenumeration) census counts by place of usual residence, to which are added the number of Australian residents estimated to have been temporarily overseas at the time of the census.

The concept of estimated resident population links people to a place of usual residence within Australia. Usual residence is that place where each person has lived or intends to live for six months or more in a reference year.

Geographic areas

The tables in this publication are at the levels of Statistical Local Area, Statistical District, Statistical Division and Local Government Area, as defined by the 2000 edition of the Australian Standard Geographical Classification (ASGC).

*Legal Local Government Areas (LGAs). These areas are the spatial units which represent the geographical areas of incorporated local government councils and incorporated community government councils (CGCs) where the CGC is of sufficient size and statistical significance. The various types of LGAs are cities (C), areas (A), rural cities (RC), towns (T), shires (S), district councils (DC) and municipalities (M).

*Statistical Districts (S Dists). These consist of selected, significant, predominantly urban areas in Australia which are not located within a Capital City SD. Statistical Districts enable comparable statistics to be produced about these selected urban areas.

*Statistical Divisions (SDs). These consist of one or more Statistical Subdivisions (SSDs). The divisions are designed to be relatively homogeneous regions characterised by identifiable social and economic units within the region, under the unifying influence of one or more major towns or cities.

*Statistical Local Areas (SLAs). These geographical areas are, in most cases, identical with, or have been formed from a division of, whole LGAs. In other cases, they represent unincorporated areas. In aggregate, SLAs cover the whole of a State or Territory without gaps or overlaps. In some cases legal LGAs overlap statistical subdivision boundaries and therefore comprise two or three SLAs. Where a particular LGA is substantially different from other LGAs in terms of size and economic significance, or in terms of user needs for statistics, the LGA may be split into two or more SLAs. For example, the City of Brisbane covers a large area and is split into 163 SLAs generally based on suburbs.

*Statistical Subdivisions (SSDs). These are of intermediate size, between SLAs and SDs. In aggregate, they cover the whole of Australia without gaps or overlaps. They are defined as socially and economically homogeneous regions characterised by identifiable links between the inhabitants. In the non-urban areas an SSD is characterised by identifiable links between the economic units with

Further information concerning statistical areas is contained in Australian Standard Geographical Classification (ASGC), 2000 (Cat. no. 1216.0).

Intercensal discrepancy

After each census, estimates for the preceding intercensal period are provided by incorporating an additional quarterly adjustment to ensure that the total intercensal increase agrees with the difference between the estimated resident populations at the two respective census dates. For a detailed description see the ABS information paper Population Estimates: Concepts, Sources and Methods (Cat. no. 3228.0).

Media age

The age at which half the population is older and half is younger. A median is a measure of central tendency. It is a mid value which divides a population distribution into two, with half the observations falling below it and half above. Unlike averages (means) medians are not usually skewed by extreme observations.

Natural increase

Excess of births over deaths.

Net interstate migration

The difference between the number of persons who have changed their place of usual residence by moving into a given State or Territory and the number who have changed their place of usual residence by moving out of that State or Territory. This difference may be either positive or negative.

Net oversease migration

Net overseas migration is net permanent and long-term overseas migration plus an adjustment for the net effect of category jumping. This net effect may be either positive or negative.

Population growth

For Queensland, population growth is the sum of natural increase, net overseas migration, net interstate migration and an allowance for intercensal discrepancy.

Sex ratio

The sex ratio relates to the number of males per 100 females.



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