Objective Coasting can reduce the ovarian hyperstimulation syndrome (OHSS) risk in ovulation induction cycles before intracytoplasmic sperm injection (ICSI). This study aimed to investigate the effect of gonadotropin-releasing hormone (GnRH) agonist and GnRH antagonist protocols to controlled ovarian hyperstimulation (COH) cycles with coasting on the parameters of ICSI cycles and the outcome. M...

CONTEXT Several studies have found a relationship between abortion and prior substance use, suggesting that a reduction in substance use might help decrease abortion rates. However, such a conclusion requires a greater understanding of the processes linking abortion and prior substance use. METHOD Path analysis of longitudinal data from 1,224 women was used to simultaneously test two pathways...

The purpose of the present study was to examine the effect of single embryo transfer (SET) in assisted reproductive technology (ART) on the reduction of the multiple pregnancy rate. We also estimated the monozygotic (MZ) twinning rates according to the SET diffusion indirectly. A reverse sigmoid curve was assumed and examined using nationwide data of SET from 2007 to 2009 in Japan. The multiple...

Although fertility rates are falling in many countries, Europe is the continent with the lowest. As men and women choose to have fewer children, total fertility rates in Europe have fallen below replacement levels: for a total fertility rate of 1.5, the rate is around 1.7 children per woman for the cohorts born in 1965. This is due to individual decisions arising from the instability of modern ...