INS and diabetes mellitus: This was a retrospective observational study including women with GD diagnosed in the first (group 1) or second trimester (group 2) according to the criteria proposed by the International Association of Diabetes Pregnancy Study Group (IADPSG), singleton pregnancy and follow-up between January 2015 and December 2018, divided according to treatment (lifestyle intervention or pharmacological treatment (metformin and/or insulin)).