Perinatal Outcomes in Early and Late Gestational Diabetes Mellitus After Treatment From 24-28 Weeks’ Gestation: A TOBOGM Secondary Analysis

In most gestational diabetes mellitus (GDM) studies, cohorts have included women combined into study populations without regard to whether hyperglycemia was present earlier in pregnancy. In this study we sought to compare perinatal outcomes between groups: women with early GDM (EGDM group: diagnosis before 20 weeks' gestation but no treatment until 24-28 weeks' gestation if GDM still present), with late GDM (LGDM group: present only at 24-28 weeks' gestation), and with normoglycemia at 24-28 weeks' gestation (control participants).