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BACKGROUND Single-embryo transfer (SET) has proven efficient in reducing multiple pregnancy rates after assisted reproduction technologies (ART). This study compares outcome of singletons after SET and double-embryo transfer (DET). METHODS We studied 404 SET and 431 DET patients, who delivered a singleton child of >500 g after fresh embryo transfer in a(More)
BACKGROUND The aim of this study was to assess the outcome of twin pregnancies in women of advanced age (>or=35 years) compared with women aged 25-29 years old. METHODS This population-based retrospective study compared perinatal outcome of twin pregnancies in primiparae aged 35 or older (N = 240) to that of twin pregnancies in primiparae aged 25-29 years(More)
OBJECTIVE To investigate the impact of maternal age on singleton pregnancy outcome, taking into account intermediate and confounding factors. STUDY DESIGN In this population-based retrospective cohort study, perinatal data of primiparous women aged 35 years or more (n = 2970), giving birth to a singleton child of at least 500 g, were compared to data of(More)
BACKGROUND The objective of this study is to analyse differences in cord characteristics between naturally conceived twins and twins born after assisted reproduction. METHODS Between 1985 and 2004, the East Flanders Prospective Twin Survey (EFPTS) registered 4159 twin pairs. We compared cord characteristics between 2119 naturally conceived dizygotic (DZ)(More)
OBJECTIVES Cancer treatment can impair fertility. The aim of this review was to investigate (1) fertility information needs, receipt and provision, (2) fertility information preferences, and (3) factors associated with receiving/providing fertility information. Cancer patients' and professional caregivers' perspectives were considered. DESIGN(More)
BACKGROUND The aim of this study is to assess differences in human chorionic gonadotropin (hCG) values between singleton IVF/ICSI pregnancies after elective single (eSET) versus double embryo transfer (DET). METHODS This is a unicentre, retrospective, non-randomized study of women with eSET or DET in years 2000-2006, giving birth to a singleton child with(More)
OBJECTIVES Preconception care is important for the screening, prevention and management of risk factors that affect pregnancy outcomes. We aimed to investigate pre-pregnancy care policies, guidelines, recommendations and services in six European countries. METHODS In 2013, an electronic search and investigation was undertaken of preconception policy,(More)
BACKGROUND As the rate of Caesarean sections (CS) continues to rise in Western countries, it is important to analyze the reasons for this trend and to unravel the underlying motives to perform CS. This research aims to assess the incidence and trend of CS in a population-based birth register in order to identify patient groups with an increasing risk for(More)
Thanks to assisted reproduction technology (ART) most couples with infertility can be helped today. Since the beginning of ART, however, two major problems have existed. In the first years of IVF more than one embryo was transferred in order to reach acceptable pregnancy rates, but this entails a risk of multiple pregnancy with all its morbidity and(More)
Birth weight is the single most important risk indicator for neonatal and infant mortality and morbidity, which has led to the idiom that 'every ounce counts'. Birth weight in turn, however, tends to vary widely across populations as a result of differential fetal growth velocity with such demographic factors as ethnicity, maternal and paternal height and(More)