Document Detail


Investigation on seasonality of twin births in Brazil.
MedLine Citation:
PMID:  9181174     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The hypothesis of seasonality of twin births was investigated in two important maternity hospitals in the State of São Paulo, Brazil. The study included 1,386 twin births that occurred among 154,699 deliveries from 1984 to 1993. No evidence of seasonality has been detected either for the twin birth rate considered as a whole or for dizygotic twinning rate. The distributions of these rates fitted well sinusoidal regression curves but the cyclic trend did not correspond to any specific season.
Authors:
H Krieger; G M Colletto; C Franchi-Pinto; B Beiguelman
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Publication Detail:
Type:  Journal Article; Multicenter Study; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Acta geneticae medicae et gemellologiae     Volume:  45     ISSN:  0001-5660     ISO Abbreviation:  Acta Genet Med Gemellol (Roma)     Publication Date:  1996  
Date Detail:
Created Date:  1997-08-21     Completed Date:  1997-08-21     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0370314     Medline TA:  Acta Genet Med Gemellol (Roma)     Country:  ITALY    
Other Details:
Languages:  eng     Pagination:  397-403     Citation Subset:  IM    
Affiliation:
Department of Parasitology, University of São Paulo, Brazil.
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MeSH Terms
Descriptor/Qualifier:
Analysis of Variance
Brazil
Female
Humans
Incidence
Infant, Newborn
Pregnancy
Pregnancy, Multiple / statistics & numerical data*
Seasons*
Twins / statistics & numerical data*
Twins, Dizygotic / statistics & numerical data

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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