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Consistent correction of data for aboriginal populations.

N Y Luther, K H Gaminiratne, A Gray

    Journal of the Australian Population Association
    |November 1, 1995
    PubMed
    Summary
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    This study refined demographic estimates for Aboriginal populations in Australia, revealing significant undercounts and higher mortality risks compared to the general population. Migration patterns also emerged as a crucial factor in population change.

    Area of Science:

    • Demography
    • Indigenous Studies
    • Public Health

    Background:

    • Accurate demographic data is crucial for understanding and addressing the needs of Indigenous populations.
    • Previous census data for Aboriginal populations in Australia have known limitations regarding accuracy and coverage.
    • Understanding population dynamics, including births, deaths, and migration, is essential for effective policy-making.

    Purpose of the Study:

    • To develop improved and consistent demographic estimates (age distributions, births, deaths, net migration) by sex for Aboriginal populations.
    • To quantify undercount estimates and assess mortality risks within these populations.
    • To analyze inter-regional migration patterns among Aboriginal populations.

    Main Methods:

    • A consistent correction procedure was applied to census data for the period 1986-91.
    Keywords:
    Age DistributionAge FactorsAustraliaBirth RateData AdjustmentData AnalysisData QualityDeath RateDemographic FactorsDeveloped CountriesError SourcesFertilityFertility MeasurementsIndigenous PopulationMeasurementMigrationMortalityOceaniaPopulationPopulation CharacteristicsPopulation DynamicsResearch MethodologyUndercount

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  • Estimation of undercount and construction of life tables were used to assess population coverage and mortality.
  • Analysis of inter-regional net migration was conducted.

    • Main Results:

    • Improved, consistent demographic estimates by sex were obtained for Aboriginal populations in the Northern Territory, South Australia, and Western Australia.
    • Aboriginal populations exhibited significantly lower coverage in statistical collections (undercount) compared to the total Australian population.
    • Life table analysis indicated substantially higher death risks for Aboriginal populations relative to the general Australian population.
    • Inter-regional net migration emerged as a significant component of population change that requires consideration.

    Conclusions:

    • The applied correction procedure yields more reliable demographic estimates for Aboriginal populations.
    • Aboriginal populations face considerable challenges related to undercounting in statistical collections and elevated mortality risks.
    • Net migration is a critical factor influencing the demographic dynamics of Aboriginal populations and should be incorporated into future analyses.