نتایج جستجو برای: birth intervals
تعداد نتایج: 289218 فیلتر نتایج به سال:
BACKGROUND Interpretation of previous associations between water intake and adverse birth outcomes is challenging given that amount and type of water consumed can be non-specific markers of exposure or underlying behavioural characteristics. We examined the relationship between water intake measures and adverse birth outcomes in participants from three study sites in the United States. METHOD...
BACKGROUND After decades of decline, stillbirth rates have increased in several industrialized countries in recent years. We examined data from the province of British Columbia, Canada, in an attempt to explain this unexpected phenomenon. METHODS We carried out a retrospective population-based cohort study of all births in British Columbia from 2000 to 2010. Outcomes of interest included over...
Research on mothers of twins suggests they have a more robust phenotype compared to singleton only mothers. Historical demographic microdata can be additional value in studying differences reproductive behaviour and survival their offspring between multiple birth However, the number such studies historical populations is limited. This study aims explore possibilities maternal life-histories usi...
OBJECTIVE to determine the risk factors for premature birth. METHODS retrospective case-control study of 600 pregnant women assisted in a hospital, with 298 pregnant women in the case group (who gave birth prematurely <37 weeks) and 302 pregnant women who gave birth to a full-term newborn in the control group. Stata software version 12.2 was used. The Chi-square test was used in bivariate ana...
Birth traits of 68 Angus and 49 Charolais x Angus calves sired by four Angus and seven Charolais bulls, respectively, were studied. Timed intervals during the calving process were compared between breed of sire groups. The Charolais sired calves required an average of 3.7 rain longer from the first appearance of the water bag until the feet were first visible; 8.1 rain longer (P<.01) from the t...
Introduction: Preterm birth is a risk factor for a number of conditions that requires comprehensive examination. Our study was designed to investigate the impact of preterm birth on the processing of auditory stimuli and brain structures at the brainstem level at a preschool age. Materials and Methods: An auditory brainstem response (ABR) test was performed with low rates of stimuli in 60 ch...
Hyperemesis gravidarum and risks of placental dysfunction disorders: a population-based cohort study
OBJECTIVE To study whether pregnancies complicated by hyperemesis gravidarum in the first (<12 weeks) or second (12-21 weeks) trimester are associated with placental dysfunction disorders. DESIGN Population-based cohort study. SETTING Sweden. POPULATION All pregnancies in the Swedish Medical Birth Register estimated to have started on 1 January 1997 or later and ended in a single birth on...
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