determining the risk of GDM among pregnant women by pre-pregnancy BMI. Five electronic
databases including Medline (PubMed), Scopus, Embase, Web of Science and Google
Scholar were searched for literature published form 2015 to January 1, 2021. The pooled
estimate risk of GDM among pregnant women was 16.8%(95% CI: 15.3–18.4). The risk of
GDM in underweight/normal group and overweight/obese group were 10.7%(95% CI: 9.1 …