Prevalence and risk factors of zygotic splitting after 937 848 single embryo transfer cycles

What is the prevalence of multiple pregnancy with zygotic splitting after single embryo transfer (SET)?The prevalence of multiple pregnancy with zygotic splitting after SET was 1.36%.In 2008, the Japan Society of Obstetrics and Gynaecology (JSOG) recommended the adoption of SET to reduce multiple births. Since then, to improve the clinical pregnancy rate, elective SET using blastocyst transfer and frozen-warmed ET has increased. Blastocyst...