Document Detail

The epidemiology of multiple pregnancies.
MedLine Citation:
PMID:  7847017     Owner:  NLM     Status:  MEDLINE    
Over the last decades the frequency of multiple births has been on the decline in most developed countries. This trend, however, has been restricted to dizygotic twins, while monozygotic rates have remained stable or risen slowly. In more recent years, however, the fall in multiple dizygotic birth rates has ceased and a slight increase is observed. This trend and the increased frequency of triplets or higher-order births, registered from the early 1980s onwards, are essentially related to treatments for infertility. No single risk factor, such as maternal age, parity, oral contraceptive use, or declining fertility rates can explain the overall declining trends. In this paper we review the descriptive epidemiology and the main risk factors for multiple pregnancies.
F Parazzini; A Villa; S Moroni; L Tozzi; S Restelli
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Publication Detail:
Type:  Journal Article; Review    
Journal Detail:
Title:  Acta geneticae medicae et gemellologiae     Volume:  43     ISSN:  0001-5660     ISO Abbreviation:  Acta Genet Med Gemellol (Roma)     Publication Date:  1994  
Date Detail:
Created Date:  1995-03-06     Completed Date:  1995-03-06     Revised Date:  2005-11-16    
Medline Journal Info:
Nlm Unique ID:  0370314     Medline TA:  Acta Genet Med Gemellol (Roma)     Country:  ITALY    
Other Details:
Languages:  eng     Pagination:  17-23     Citation Subset:  IM    
Mario Negri, Institute of Pharmacological Research, Milan, Italy.
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MeSH Terms
Italy / epidemiology
Pregnancy, Multiple / statistics & numerical data*
Risk Factors

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