The data were taken from the breeding and farrowing records of the Animal Husbandry Section of the IOWA GRICULTURAL EXPERIMENT STATION during the years 1915 and 1917 to 1930 inclusive. The data were collected in connection with other experiments2 not planned expressly to make this study possible. Yet no practice was followed which seems likely to have affected the birth weights in a way which w...

background and purpose: birth outcomes and fertility measures are commonly evaluated in maternal and child health integrated program (mchip) in the field of public health. given the key role of time- trend study in the projection of current data to the future, this population-based study aimed to describe the significant changes of birth outcomes and fertility measures in the rural population o...

STUDY OBJECTIVE Understanding causes of variation in birth weight has been limited by lack of sufficient sets of data that include paternal birth weight. The objective was to estimate risks of low birth weight dependent on parental birth weights and to estimate father-mother-offspring correlations for birth weight to explain the variability in birth weight in terms of effects of genes and envir...

With genetic selection, the increase in litter size has led to higher variation in within-litter birth weights in pigs. This has been associated with a reduction in mean birth weights and a rise in the proportion of piglets weighing less than 1 kg at birth. Low birth weight pigs exhibit lower postnatal growth rates and feed efficiency, which may be explained by an inadequate digestion and/or nu...

background: preterm birth (ptb) is responsible for 70% of neonatal mortalities. various factors influence the risk of neonatal mortality in different populations. objective: our objective was to evaluate neonatal survival rate of preterm infants, and to define its predictors in iranian population. materials and methods: this retrospective cohort study included all preterm (26-37 weeks) infants ...

The blood pressures of hypertensive patients living in the southeastern region of the United States are less responsive to several classes of antihypertensive medications. Birth weights are lower among blacks and those living in the Southeast, and evidence suggests that this developmental difference increases blood pressure. As an initial step in addressing the possibility that birth weight inf...

BACKGROUND: Neonatal mortality rates among black infants are lower than neonatal mortality rates among white infants at birth weights <3000 g, whereas white infants have a survival advantage at higher birth weights. This finding is also observed when birth weight-specific neonatal mortality rates are compared between infants of smokers and non-smokers. We provide a parsimonious explanation for ...

Objective. To establish the percentile charts of birth weights for gestational age and sex within the Cameroonian population. Methods. A review of medical records of infants born between January 2007 and December 2011 at the maternities of two hospitals in Cameroon, Central Africa. Multiple pregnancies, births of HIV infected women, stillbirths, and births with major fetal malformations were ex...