Small effects of selective migration and selective survival in retrospective studies of fertility

Gunnar Andersson and Boris Sobolev
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Gunnar Andersson: Max Planck Institute for Demographic Research, Rostock, Germany

No WP-2001-031, MPIDR Working Papers from Max Planck Institute for Demographic Research, Rostock, Germany

Abstract: In this paper, we assess the accuracy of fertility estimates that are based on the retrospective information that can be derived from an existing cross-sectional population. Swedish population registers contain the information on childbearing of all people ever living in Sweden and thus allow us to avoid any problems of selectivity by virtue of survival or of out-migration when we estimate fertility measures for previous calendar periods. We calculate two types of fertility rates for each year in 1961-1999: (i) rates that are based on the population that were living in Sweden at the end of 1999 and (ii) rates that also include the information on people who had died or emigrated before the turn of the century. We find that the omission of information on emigrated and deceased individuals, as the situation would be in any demographic survey, most often have negligible effects on our fertility measures. However, first-birth rates of immigrants gradually become more biased as we move back in time from 1999 so that they increasingly tend to over-estimate the actual fertility of that population.

Keywords: Sweden; bias; fertility measurements; retrospective analysis (search for similar items in EconPapers)
JEL-codes: J1 Z0 (search for similar items in EconPapers)
Pages: 12 pages
Date: 2001
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Citations: View citations in EconPapers (4)

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Persistent link: https://EconPapers.repec.org/RePEc:dem:wpaper:wp-2001-031

DOI: 10.4054/MPIDR-WP-2001-031

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