Titre :
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Secular trends in sex ratios at birth in North America and Europe over the second half of the 20th century. (2003)
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Auteurs :
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GRECH (V.) : MLT. Paediatric Department. St Luke's Hospital. ;
SAVONA-VENTURA (C.) : MLT. Department of Obstetrics and Gynaecology. St Luke's Hospital. ;
VASSALLO-AGIUS (P.) : MLT. Medical School. University of Malta.
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Type de document :
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Article
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Dans :
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Journal of epidemiology and community health (vol. 57, n° 8, 2003)
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Pagination :
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612-615
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Langues:
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Anglais
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Mots-clés :
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Naissance
;
Amérique
;
Europe
;
Amérique du Nord
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Résumé :
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[BDSP. Notice produite par INIST-CNRS 5DR0xrZq. Diffusion soumise à autorisation]. Context : A previous study showed that significantly more boys were born in southern latitudes in Europe than in northern latitudes and the converse pattern was observed in North America. Objective : This study analyses secular trends in gender ratios for live births over the second half of the 20th century. Design, setting, participants : Analysis was carried out from a World Health Organisation dataset comprising live births over the above period. This included 127 034 732 North American and 157 947 117 European live births. Main outcome measures : Analysis of trends in gender ratios for countries in both continents. Results : The findings show a highly significant overall decline in male births in both Europe and North America (p40°, p
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