BACKGROUND In the US, the risk of low birthweight appears to increase more quickly with maternal age for black women than it does for white women. Our aim was to investigate correlates and causes of the racial/ethnic divergence in low birthweight by maternal age. METHODS We analysed birth certificate data from 96 887 singleton births to black and white mothers in Chicago from 1994 to 1996 to ...

In this study the relation between maternal age, spacing number of pregnancies and birth weight and height was evaluated 1000 newborns in Fatemeh hospital in Hamedan. The growth parameters of newborns from mothers aged  18-35 years, were more than newborns from mothers under 18 or over 35 years. Also infants born from mothers, how had less than 24 months interval between pregnancies weight less...

BACKGROUND The mechanisms underlying the association between maternal age (both young and older maternal age) and adverse perinatal outcomes are unclear. METHODS We examined the association of maternal age at first birth with preterm birth (<37 weeks gestation) and small for gestational age (SGA) in a cohort of 264 695 Danish women, each of which had at least one sister in the cohort (n = 121...

genetic analysis of growth traits including body weight recorded at birth (bwt), 3 (3bwt), 6 (6bwt), 9 (9bwt) and 12 (12bwt) months of age was carried out using 4107 records on raieni cashmere goats born from 206 sires and 1402 dams, during years 1992 to 2006. the records were collected from a resource flock in baft research station, situated in kerman province, iran. the importance of addition...