OBJECTIVE To re-evaluate the causal effect of interpregnancy interval on adverse birth outcomes, on the basis that previous studies relying on between mother comparisons may have inadequately adjusted for confounding by maternal risk factors. DESIGN Retrospective cohort study using conditional logistic regression (matching two intervals per mother so each mother acts as her own control) to mo...

IMPORTANCE It is unclear whether the benefits of tobacco control policies extend to pregnant women and infants, especially among racial/ethnic minority and low socioeconomic populations that are at highest risk for adverse birth outcomes. OBJECTIVE To examine the associations of state cigarette taxes and the enactment of smoke-free legislation with US birth outcomes according to maternal race...

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...

BACKGROUND/AIMS Diabetes is well-known to influence endothelial function. Endothelial function and blood flow regulation might be different in diabetic and non-diabetic pregnancy. However, the impact of umbilical blood flow regulation in gestational diabetes on fetal development is unknown so far. METHODS In a prospective birth cohort study, we analyzed the association of the umbilical artery...

AIMS To evaluate fetal growth in relation to gestational weight gain in women with Type 2 diabetes. METHODS A retrospective cohort study of 142 consecutive pregnancies in 28 women of normal weight, 39 overweight women and 75 obese women with Type 2 diabetes (pre-pregnancy BMI < 25, 25-29.9, ≥ 30 kg/m2, respectively). Gestational weight gain was categorized as excessive (exceeding the US Insti...

AIM To examine if there is an association between country of birth in parents and small-for-gestational-age (defined as a birthweight of more than two standard deviations (SDs) below the mean) in first singletons births. METHODS In this follow-up study, national population and healthcare registers were used to identify small-for-gestational-age births in all first singleton births in Sweden b...

Pregnancy in the women aged less than 20 years is an important public health issue, especially in developing countries. In Iran, limited studies have focused on the effects of maternal age on gestational and neonatal outcomes to demonstrate the pregnancy outcomes in young women. The present study aimed to investigate the maternal and neonatal complications in the pregnant women aged less than 2...

OBJECTIVES To examine the association of maternal pre-pregnancy body mass index (BMI) and gestational weight gain (GWG) with anthropometry in the offspring of mothers with gestational diabetes mellitus (GDM). METHODS We performed a retrospective cohort study in 1263 GDM mother-child pairs. General linear models and Logistic regression models were used to assess the single and joint associatio...

Plasma concentrations of the stable endothelin-1 precursor, C-terminal portion of the endothelin-1 precursor, determined prospectively in 293 newborn infants (gestational age, 24-41 weeks) at birth and on day 3 of life were unrelated to gestational age at birth, but strongly associated with respiratory distress when measured on day 3 of life.