PMID: 9181180Jan 1, 1996Paper

Maternal and neonatal variables in twins: an epidemiological approach

Acta geneticae medicae et gemellologiae
M A Campana, M M Roubicek

Abstract

Population studies on human twinning are scarce in Argentina. In order to analyze frequencies and certain maternal and neonatal variables related to twin births, we studied a series of 69.678 consecutive newborns with 500 g of weight and over, which occurred at a public hospital in the province Buenos Aires, during 14 years (1982-1995). The frequency of twin births (10 per 1000 deliveries) and sex ratio were similar to other studies reported in Caucasian population. Maternal age and order of gravity/parity were positively correlated with twinning rates, more markedly so in dissimilar sex-pairs. Stillbirths and neonatal deaths were more frequent in twins than in singletons, but less frequent when comparing groups of same weight. Congenital malformations were not found to be significantly more frequent in twins than in the total newborn population. However, their occurrence, predominantly in like-sexed pairs and the concordance for defect type in doubly affected same-sex pairs, suggests that monozygotic twinning carries an increased risk for malformation.

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Citations

Jan 15, 2003·Human Reproduction·P AstolfiL A Zonta
Jan 28, 2004·Birth Defects Research. Part A, Clinical and Molecular Teratology·Si-Jia LiJoann Bodurtha
Apr 21, 2009·American Journal of Medical Genetics. Part C, Seminars in Medical Genetics·Barbara M O'Brien
Nov 18, 2000·Revista do Hospital das Clínicas·T R SchuppM Zugaib
Oct 22, 2005·Maternal and Child Health Journal·Yiwei TangJeffrey Roth
Sep 15, 2016·Journal of Obstetrics and Gynaecology : the Journal of the Institute of Obstetrics and Gynaecology·Layan AlrahmaniAwoniyi O Awonuga
Aug 13, 2020·BJOG : an International Journal of Obstetrics and Gynaecology·Young Mi JungJong Kwan Jun
Jan 1, 2011·ISRN Orthopedics·Randall T Loder, Elaine N Skopelja
Sep 3, 2005·Gynécologie, obstétrique & fertilité·A FortinD Mahieu-Caputo

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