Temporal trends in multiple births after in vitro fertilisation in Sweden, 1982-2001: a register study.

Obligatory versus elective single embryo transfer in in vitro fertilization. A population-based analysis of data from the U.K. Human Fertilisation and Embryology Authority.

OBJECTIVE To determine how obligatory single embryo transfer (SET) and elective SET influence pregnancy outcome. STUDY DESIGN We compared women who underwent obligatory and elective SET using data from a comprehensive, population-based register from the United Kingdom Human Fertilisation and Embryology Authority, which contained all in vitro fertilization (IVF) treatments administered between...

Stillbirth rates in singletons, twins and triplets in Sweden, 1869 to 2001.

The temporal variation in the stillbirth rates (SBR), measured as the number of stillborn per 1000 total births, among singletons, twins and triplets was studied on Swedish birth data for the period 1869 to 2001 and comparisons with data from other populations were made. Among both single and multiple births there were marked, almost monotonously decreasing trends in the stillbirth rates. Among...

Pregnancy Rate after First Intra Cytoplasmic Sperm Injection-In Vitro Fertilisation Cycle in Patients with Endometriomawith or without Deep Infiltrating Endometriosis

Reasons for increasing trends in large for gestational age births.

OBJECTIVE To describe the magnitude of change in the proportion of term and postterm (37 completed weeks or more) large for gestational age (LGA) infants between 1992-2001 in Sweden and to examine whether time trends in prevalence of LGA births can be explained by changes in maternal risk factors. METHODS Using the population-based Swedish Birth Register, we analyzed data from 1992 through 20...

Children conceived by in vitro fertilisation after fresh embryo transfer.

AIMS To compare the outcome in in vitro fertilisation (IVF) children (after fresh embryo transfer) from multiple and singleton births with one another, and with normally conceived control children. METHODS A cohort of 278 children (150 singletons, 100 twins, 24 triplets and four quadruplets), conceived by IVF after three fresh embryos had been transferred, born between October 1984 and Decemb...