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	Provedor de dados Braz. J. Genet. (1) Genet. Mol. Biol. (1) Autor Beiguelman,Bernardo (1) Colletto,Gloria M.D.D. (1) Krieger,Henrique (1) Silva,Luciana Marques da (1) Palavra-chave Maternal age (2) Dizygotic twinning rate (1) Down syndrome (1) Gestational age (1) Gestational order (1) Monozygotic twinning rate (1) Southeastern Brazil (1) Mais... Tipo do documento Info:eu-repo/semantics/article (1) Info:eu-repo/semantics/other (1) Ano 2003 (1) 1996 (1) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Twinning rate trend in a population sample from the city of São Paulo, Brazil Genet. Mol. Biol. Colletto,Gloria M.D.D.. A retrospective study was carried out on a sample consisting of 89,491 deliveries occurred from 1979 through 1998, in the city of São Paulo, SP, Brazil. These deliveries included 935 twin and 26 triplet births. The mean incidence per 1,000 deliveries was estimated at 10.45 for twins (5.34 for dizygotic and 5.11 for monozygotic twins) and 0.29 for triplets. The average maternal age increased significantly during this period for both twins and singletons. The temporal variation in years significantly influenced the increase of monozygotic twins and of triplets. Temporal variation and maternal age significantly influenced the dizygotic twinning rate increase. An increased proportion of monozygotic twins born to mothers aged 31 - 35 years was also detected. Tipo: Info:eu-repo/semantics/other Palavras-chave: Dizygotic twinning rate; Monozygotic twinning rate; Maternal age; Gestational order; Gestational age. Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572003000300005 Maternal age and Down syndrome in Southeastern Brazil Braz. J. Genet. Beiguelman,Bernardo; Krieger,Henrique; Silva,Luciana Marques da. The proportion of maternal-age-independent patients estimated among 200 Brazilian Down syndrome children (59.6%) was significantly larger than that of maternal-age-dependent cases (40.4%). The latter proportion is the smallest observed in pertinent literature and due basically to the low mean maternal age of the population analyzed. Based on the remarkable correlation (r = 0.95) between the proportion of maternal-age-dependent patients and the mean maternal age of the general population, a simple predictive equation to estimate the proportion of maternal-age-dependent Down syndrome patients based on the mean maternal age of the general population is suggested in situations where reliable data on the incidence of this syndrome according to maternal age is... Tipo: Info:eu-repo/semantics/article Palavras-chave: Maternal age; Down syndrome; Southeastern Brazil. Ano: 1996 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84551996000400020 Registros recuperados: 2 Primeira ... 1 ... Última

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