BackgroundGestational diabetes mellitus (GDM) is a major health issue that poses its risk on pregnancy. It is prevalence has been globally increasing. AimThis study aimed to examine trends in demographic and socioeconomic characteristics, maternal BMI, behavioral factors, obstetric interventions, pregnancy complications, and maternal pre-existing medical conditions and maternal and neonatal outcomes in women with GDM in Jordan. We also aimed to equate the occurrence of emergency cesarean delivery with GDM. MethodsThe study is a part of a comprehensive national study of perinatal mortality that was conducted in Jordan. This study included all women who gave birth in the selected hospitals during the study period. Maternal and medical conditions during pregnancy and neonatal outcomes were compared among women who did not develop gestational diabetes mellitus and those who developed gestational diabetes mellitus. ResultsThe overall incidence rate of gestational diabetes mellitus (GDM) was 1.2%. Women with gestational diabetes had a higher weight, and BMI, more likely to be overweight, obese, or morbidly obese and less likelihood to be underweight. A significant association was detected between previous spontaneous abortions/miscarriages, previous preterm, previous stillbirths, previous children born with birth weight less than 2500 g, and previous children born alive and died before 28 days, and the incidence of GDM. Women with GDM were at high risk for complications in pregnancy such as hypertension, preeclampsia, premature delivery and labor induction. The offspring of GDM patients were at high risk of complications such as macrosomia, stillbirth, neonatal hypoglycemia, and neonatal jaundice and admittance to the NICU. ConclusionsThe incidence of GDM was linked to several clinical factors. Women with GDM are at high risk for complications of pregnancy and at higher risk of neonatal complications.