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Over-coverage in population registers leads to bias in demographic estimates
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0032-4728; 1477-4747
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Population studies, 2020, Vol. 74, No. 3, pp. 451-469
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MONTI, Andrea, DREFAHL, Sven, MUSSINO, Eleonora, HARKONEN, Juho, Over-coverage in population registers leads to bias in demographic estimates, Population studies, 2020, Vol. 74, No. 3, pp. 451-469 - https://hdl.handle.net/1814/66082
Abstract
Estimating the number of individuals living in a country is an essential task for demographers. This study assesses the potential bias in estimating the size of different migrant populations due to over-coverage in population registers. Over-coverage-individuals registered but not living in a country-is an increasingly pressing phenomenon
however, there is no common understanding of how to deal with over-coverage in demographic research. This study examines different approaches to and improvements in over-coverage estimation using Swedish total population register data. We assess over-coverage levels across migrant groups, test how estimates of age-specific death and fertility rates are affected when adjusting for over-coverage, and examine whether over-coverage can explain part of the healthy migrant paradox. Our results confirm the existence of over-coverage and we find substantial changes in mortality and fertility rates, when adjusted, for people of migrating age. Accounting for over-coverage is particularly important for correctly estimating migrant fertility.
however, there is no common understanding of how to deal with over-coverage in demographic research. This study examines different approaches to and improvements in over-coverage estimation using Swedish total population register data. We assess over-coverage levels across migrant groups, test how estimates of age-specific death and fertility rates are affected when adjusting for over-coverage, and examine whether over-coverage can explain part of the healthy migrant paradox. Our results confirm the existence of over-coverage and we find substantial changes in mortality and fertility rates, when adjusted, for people of migrating age. Accounting for over-coverage is particularly important for correctly estimating migrant fertility.
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First published online: 14 November 2019
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Strategic Research Council of the Academy of Finland [293103]
Swedish Research CouncilSwedish Research Council [340-2013-5164]
Swedish Research Council for Health, Working life and WelfareSwedish Research CouncilSwedish Research Council for Health Working Life & Welfare (Forte)
Swedish Research CouncilSwedish Research Council [340-2013-5164]
Swedish Research Council for Health, Working life and WelfareSwedish Research CouncilSwedish Research Council for Health Working Life & Welfare (Forte)