http://www.cnr.it/ontology/cnr/individuo/prodotto/ID27806

Spatial analysis of the aptitude to late maternity on the island of Sardinia. (Articolo in rivista)

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Spatial analysis of the aptitude to late maternity on the island of Sardinia. (Articolo in rivista) (literal)

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Tentoni S, Lisa A, Fiorani O, Lipsi RM, Caselli G, Astolfi P. (2012)
Spatial analysis of the aptitude to late maternity on the island of Sardinia.
in Journal of biosocial science (Print); Biosocial society, Cambridge (Regno Unito)
(literal)

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IGM-CNR, Pavia, Italy; IMATI-CNR, Pavia, Italy; Department od Demographic Sciences, University of Rome La Sapienza, Roma, Italy: Department of Genetics and Microbiology A. Buzzati-Traverso, University of Pavia, Pavia, Italy (literal)

Titolo

Spatial analysis of the aptitude to late maternity on the island of Sardinia. (literal)

Abstract

This study examines local heterogeneity in the aptitude of Sardinian mothers towards late reproduction, and explores its temporal persistence and association with both post-reproductive longevity and propensity to consanguineous marriage. Data on women's fertility from 1961 and birth records for 1980-1996 from Vital Statistics were analysed by means of the following indicators: the incidence of old mothers at last childbirth, female mortality (1980-2001) at 80 years of age and over and the proportion of consanguineous marriages (1930-1969). A variable kernel-smoothing method was used to create interpretable representations of the true spatial structure of the indicators, and to highlight areas of higher than expected intensity. In particular, an area of reproductive and post-reproductive longevity was identified where the traits combine with a higher tendency to relatedness. Intriguingly, this area corresponds approximately to the geographically and historically well defined central-eastern zone, which was the refuge of Sardinians during past invasions, and overlaps the Ogliastra region, which has been widely studied for its genetic homogeneity. (literal)

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