Variance components were estimated for maturing age, first litter size, and animal size in Finnish minks. The fitted animal models had direct genetic and maternal genetic effects, litter effects, and maternal environmental effects. Multivariate analysis was performed to determine covariances between the traits. Maternal effects represented a significant source of phenotypic variance in the matu...

BACKGROUND Previous studies on the association between maternal age and risk of childhood leukemia found inconsistent results. OBJECTIVES We aimed to assess whether there is an association between maternal age and risk of childhood leukemia and whether such an association is modified by maternal year of birth. METHODS By linking nationwide Swedish registers, we analyzed leukemia incidence a...

introduction maternal and fetal characteristics can be effect on optimism which vary among different cultures and countries. so the aim of this study was to determine prenatal optimism and its relationship with fetal and maternal characteristics in primiparous women. materials and methods this research study was a descriptive cross - sectional. the statistical populations consisted of 240 pregn...

OBJECTIVE To assess the association between advanced maternal age (AMA) and adverse pregnancy outcomes. DESIGN Secondary analysis of the facility-based, cross-sectional data of the WHO Multicountry Survey on Maternal and Newborn Health. SETTINGS A total of 359 health facilities in 29 countries in Africa, Asia, Latin America, and the Middle East. SAMPLE A total of 308 149 singleton pregnan...

Advanced maternal age is associated with negative offspring health outcomes. This interpretation often relies on physiological processes related to aging, such as decreasing oocyte quality. We use a large, population-based sample of American adults to analyze how selection and lifespan overlap between generations influence the maternal age-offspring adult health association. We find that offspr...

BACKGROUND Deaths from maternal causes represent the leading cause of death among women of reproductive age in most developing countries. It is estimated that the highest risk occurs in Africa, with 20% of world births but 40% of the world maternal deaths. The level of maternal mortality is difficult to assess especially in countries without an adequate vital registration system. Indirect techn...

BACKGROUND In Africa low birth weight (LBW) (<2500 g), is the strongest determinant of infant morbidity and mortality. The aim of this study was to quantify the effect of maternal anthropometry, education and socio-economic status on gestational age and birth weight. METHODS In 1000 Sudanese mothers with singleton births, anthropometric measurements (weight, height, mid-arm circumference) and...

This study analyzes the association between advanced maternal age and increased incidence of Down syndrome in neonates, based on a population sample from the State of Bahia in Northeast Brazil. Age of the mothers of 220 Down syndrome subjects was investigated, and age distribution was compared to that of the population control group, 220 mothers of subjects without Down syndrome. The proportion...