title: Congenital anomalies in twins in Northern Ireland. I: Anomalies in general and specific anomalies other than neural tube defects and of the cardiovascular system, 1974-1979.
abstract: Data are presented from a large-scale population-based study in Northern Ireland, in which multiple sources of ascertainment were used. As found in other studies, the overall prevalence at birth of congenital anomalies amongst twins (285.4/10,000) was somewhat higher than the rate amongst singletons (241.8/10,000). Unlike in other studies, however, the rate amongst twins of like sex (287.8/10,000) was not markedly higher than that amongst twins of unlike sex (252.3/10,000). Problems of comparison between series are discussed.
authors.affiliation: Department of Comunity Medicine and Epidemiology, University of Nottingham, England.
authors.forename: J
authors.initials: J
authors.lastname: Little
authors.forename: N C
authors.initials: NC
authors.lastname: Nevin
mesh_terms: D004200:Diseases in Twins / Q000453:epidemiology*; D004314:Down Syndrome / Q000453:epidemiology; D005260:Female; D005313:Fetal Death; D006801:Humans; D007231:Infant, Newborn; D009660:Northern Ireland / Q000453:epidemiology; D011247:Pregnancy; D015995:Prevalence; D012737:Sex Factors; D012959:Socioeconomic Factors