A parsimonious characterization of change in global age-specific and total fertility rates

Athena Pantazis and Samuel J Clark

PLOS ONE, 2018, vol. 13, issue 1, 1-19

Abstract: This study aims to understand trends in global fertility from 1950-2010 though the analysis of age-specific fertility rates. This approach incorporates both the overall level, as when the total fertility rate is modeled, and different patterns of age-specific fertility to examine the relationship between changes in age-specific fertility and fertility decline. Singular value decomposition is used to capture the variation in age-specific fertility curves while reducing the number of dimensions, allowing curves to be described nearly fully with three parameters. Regional patterns and trends over time are evident in parameter values, suggesting this method provides a useful tool for considering fertility decline globally. The second and third parameters were analyzed using model-based clustering to examine patterns of age-specific fertility over time and place; four clusters were obtained. A country’s demographic transition can be traced through time by membership in the different clusters, and regional patterns in the trajectories through time and with fertility decline are identified.

Date: 2018
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Persistent link: https://EconPapers.repec.org/RePEc:plo:pone00:0190574

DOI: 10.1371/journal.pone.0190574

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