Infertility, infertility treatment and twinning: the Danish National Birth Cohort
نویسندگان
چکیده
منابع مشابه
Infertility, infertility treatment and twinning: the Danish National Birth Cohort.
BACKGROUND We have previously observed that an increasing time to pregnancy (TTP) is associated with a reduced frequency of twin deliveries in couples not receiving infertility treatment. By using updated information, we assessed the frequencies of dizygotic (DZ) and monozygotic (MZ) twin deliveries as a function of infertility (TTP > 12 months), as well as infertility treatment. METHODS From...
متن کاملInfertility, infertility treatment, and congenital malformations: Danish national birth cohort.
OBJECTIVES To examine whether infertile couples (with a time to pregnancy of > 12 months), who conceive naturally or after treatment, give birth to children with an increased prevalence of congenital malformations. DESIGN Longitudinal study. SETTING Danish national birth cohort. PARTICIPANTS Three groups of liveborn children and their mothers: 50,897 singletons and 1366 twins born of fert...
متن کاملFecundity and twinning. A study within the Danish National Birth Cohort.
BACKGROUND Decreased fecundity has been hypothesized as one of the causes of the widespread decline in twin rates in the 1960s and 1970s. The association between high fecundity and twinning is not, however, well documented. METHODS In the Danish National Birth Cohort, we identified 56 295 births (including 729 twin deliveries) with data on pregnancy planning and time to pregnancy (TTP) and no...
متن کاملInfertility Counselling: Alleviating the Emotional Burden of Infertility and Infertility Treatment
This article provides an overview of international developments in the area of infertility counselling. It informs about the development of international organizations and relevant professional standards and describes the need to make counselling accessible to all patients, especially those who experience great distress or display previous vulnerability. Whereas in previous years counselling fo...
متن کاملThe Danish National Birth Cohort--its background, structure and aim.
BACKGROUND It is well known that the time from conception to early childhood has importance for health conditions that reach into later stages of life. Recent research supports this view, and diseases such as cardiovascular morbidity, cancer, mental illnesses, asthma, and allergy may all have component causes that act early in life. Exposures in this period, which influence fetal growth, cell d...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Human Reproduction
سال: 2007
ISSN: 1460-2350,0268-1161
DOI: 10.1093/humrep/del495