| Investigation on seasonality of twin births in Brazil. | |
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MedLine Citation:
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PMID: 9181174 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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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. |
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Authors:
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H Krieger; G M Colletto; C Franchi-Pinto; B Beiguelman |
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Publication Detail:
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Type: Journal Article; Multicenter Study; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Acta geneticae medicae et gemellologiae Volume: 45 ISSN: 0001-5660 ISO Abbreviation: Acta Genet Med Gemellol (Roma) Publication Date: 1996 |
Date Detail:
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Created Date: 1997-08-21 Completed Date: 1997-08-21 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 0370314 Medline TA: Acta Genet Med Gemellol (Roma) Country: ITALY |
Other Details:
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Languages: eng Pagination: 397-403 Citation Subset: IM |
Affiliation:
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Department of Parasitology, University of São Paulo, Brazil. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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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 |
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