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Related Experiment Videos

The hidden component in census-derived migration data: assessing its size and distribution.

B Nicholson1

  • 1Centre for Scandinavian Studies, Newcastle-upon-Tyne, England.

Demography
|February 1, 1990
PubMed
Summary
This summary is machine-generated.

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Norwegian census data significantly omits migration details, misrepresenting population movement. This hidden migration affects all administrative levels and can distort research findings, suggesting broader data limitations.

Area of Science:

  • Demography
  • Population Studies
  • Geographic Information Science

Background:

  • Census data is a primary source for understanding population dynamics and migration.
  • Accurate migration data is crucial for effective policy-making and resource allocation.
  • Previous studies have highlighted potential inaccuracies in census-based migration data.

Purpose of the Study:

  • To compare the completeness of migration data between Norwegian linked decennial census records and official migration registration statistics.
  • To quantify the extent of underreported population movement in census data.
  • To assess the impact of omitted migration on the accuracy of demographic research.

Main Methods:

  • Linked decennial census data from Norway was compared with 10 years of migration registration statistics.

Related Experiment Videos

  • Analysis focused on the total volume of movement and variations across administrative levels, regions, and migration streams.
  • The direction of net migration derived from census data was specifically examined for discrepancies.

    • Main Results:

    • A considerable amount of population movement was omitted from the census data.
    • This underreporting was consistent across administrative levels when considering total movement.
    • Significant regional variations and discrepancies in migration directions and streams were observed, with census data sometimes misrepresenting net movement.

    Conclusions:

    • Norwegian census data substantially underestimates migration, potentially leading to significant biases in demographic research.
    • The findings suggest that migration data derived solely from census sources may not accurately reflect population redistribution.
    • These data limitations may extend beyond Norway, impacting the validity of migration research globally.