Document Detail

Secular trends in twinning rates.
MedLine Citation:
PMID:  16674837     Owner:  NLM     Status:  MEDLINE    
Based on national data from civil birth registration systems, this paper provides an overview of trends in the twinning birth rates in fifteen developed countries. Patterns and differentials in such rates across populations are described, and trends over time are given. The evolution of the twinning rate in industrialized countries over the last century follows broadly the same pattern. One exception is the period around World War I, with a peak in the twinning rate being observed during the war, or just after it, although this was not registered in all countries. Since the mid-1970s twinning rates have increased in many developed countries in response to a growing use of fertility-stimulating treatments such as in vitro fertilization.
Agata V D'Addato
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Publication Detail:
Type:  Journal Article     Date:  2006-05-04
Journal Detail:
Title:  Journal of biosocial science     Volume:  39     ISSN:  0021-9320     ISO Abbreviation:  J Biosoc Sci     Publication Date:  2007 Jan 
Date Detail:
Created Date:  2006-11-29     Completed Date:  2007-03-13     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0177346     Medline TA:  J Biosoc Sci     Country:  England    
Other Details:
Languages:  eng     Pagination:  147-51     Citation Subset:  IM    
Institut National d'Etudes Démographiques (INED), Paris, France and Department for the Study of Mediterranean Societies (DSSM), University of Bari, Italy.
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MeSH Terms
Birth Rate / trends*
Developed Countries

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