The highest prevalence of GDM was observed for studies using the IADPSG, ADA 2012, or WHO 2013 criteria (13.77%) while the lowest data was found among Japanese reports that employed JSOG criteria (2.80%).
The most widely used criteria were ADA 2012, IADPSG, or WHO 2013, resulting in a pooled prevalence of GDM of 14% while only a limited number of studies used ADIP 1998, ICD 10, JSOG, ADA 2004, or ADA 2010.
In October 1983, JSOG announced its official position on IVF-ET and published "Remarks on IVF-ET".
JSOG has been devoted to collecting and publishing as much information as possible regarding the state of ART in Japan in order to enhance awareness and understanding of ART in JSOG members and the public alike.
Multiple pregnancy was once a serious issue, but the incidence has drastically decreased since 2008, when JSOG announced at a conference that only one embryo at a time should be transplanted.