نتایج جستجو برای: multiple births
تعداد نتایج: 772313 فیلتر نتایج به سال:
The aim of this study was to survey multiple birth data and to analyze the recent trends of multiple births and its consequences on perinatal problems in Korea from 1991 to 2008. Data were obtained from the Korean Statistical Information Service. The total number of multiple births showed increasing trends. The multiple birth rate was maintained within less than 10.0 for the decade from 1981 to...
purpose: to determine the frequency and severity of retinopathy of prematurity (rop) among singleton and multiple-birth neonates referred to farabi eye hospital, tehran-iran. methods: we reviewed the records of 99 consecutive neonates from multiple-gestation pregnancies including 68 twins, 26 triplets and 5 quadruplets who were screened for rop during 2002-2004. the frequency, severity and risk...
The objective of this study was to quantify the phenotypic and genetic risk factors associated with multiple ovulations and twin births in cattle. Prevalence and cow- and herd-level risk factors associated with ovulation rate were determined using 40,617 ultrasonographic records of the reproductive tract from 27,907 dairy and beef cows from 738 commercial herds. Prevalence of twin births was es...
BACKGROUND The present study used vital-statistics data to estimate the effect of maternal age and fertility treatment on the number and rate of multiple live births in Japan from 1974 through 2009. METHODS Japanese vital statistics published by the Ministry of Health, Labour and Welfare from 1974 to 2009 were gathered and reanalyzed with regard to maternal age class and plurality of live bir...
OBJECTIVE To assess the public health consequences of the rise in multiple births with respect to congenital anomalies. DESIGN Descriptive epidemiological analysis of data from population-based congenital anomaly registries. SETTING Fourteen European countries. POPULATION A total of 5.4 million births 1984-2007, of which 3% were multiple births. METHODS Cases of congenital anomaly inclu...
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