نتایج جستجو برای: live births
تعداد نتایج: 105851 فیلتر نتایج به سال:
Investigations of secular changes in the live-birth sex ratios of different countries have given conflicting results (Gini, 1908; Russell, 1936; Ciocco, 1938; Strandskov, 1942; Martin, 1943). In general the data are unsatisfactory, either because numbers of births are small, or because of inaccuracies and deficiencies in birth notification. Russell (1936) examined statistics for England and Wal...
Teen* childbearing (one or more live births before age 20 years) can have negative health, social, and economic consequences for mothers and their children (1). Repeat teen births (two or more live births before age 20 years) can constrain the mother's ability to take advantage of educational and workforce opportunities (2), and are more likely to be preterm or of low birthweight than first tee...
background: pregnant patients with mechanical heart valves require anticoagulation. the risk of bleeding and embryopathy associated with oral anticoagulants must be weighed against the risk of valve thrombosis. methods: in this prospective study, undertaken between 1999 and 2009, 53 pregnancies (47 women with mechanical mitral valves; 29.8 ± 4.8 years old) were studied. patients were divided in...
OBJECTIVE To propose a simplified method of correcting vital information and estimating the coefficient of infant mortality in Brazil. METHODS Vital data in the information systems on mortality and live births were corrected using correction factors, estimated based on events not reported to the Brazilian Ministry of Health and obtained by active search. This simplified method for correcting ...
5.9 million children under age five died in 2015, 16 000 every day. Globally, under-five mortality rate has decreased by 53%, from an estimated rate of 91 deaths per 1000 live births in 1990 to 43 deaths per 1000 live births in 2015. The average annual rate of reduction in under-five mortality has accelerated from 1.8% a year over the period 1990–2000 to 3.9% for 2000–2015 , but remains insuf...
BACKGROUND The risks of premature birth and perinatal death are increased after in vitro fertilization. These risks are mainly due to the high incidence of multiple births, which relates to the number of embryos transferred. METHODS We performed a randomized, multicenter trial to assess the equivalence of two approaches to in vitro fertilization with respect to the rates of pregnancy that res...
OBJECTIVE The combination of heparin and aspirin was regarded as the 'standard therapy' for patients with recurrent pregnancy loss (RPL) and positive aPL antibodies to enhance live births, but it largely stems from expert opinion. We performed a meta-analysis of randomized controlled trials (RCTs) to assess whether this combination works better than aspirin alone. METHODS RCTs testing the eff...
Background: While anti-Müllerian hormone (AMH) level allows quantitative evaluation of ovarian reserve, its predictive value for live births following assisted reproductive technology cycles has remained controversial. The aim of the present study was to assess the importance of AMH in predicting live birth following intrauterine insemination (IUI) in the case of low or very lo...
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