NVD- normal vaginal delivery, OVD- operative vaginal delivery, CD- cesarean delivery, NS- non significant
A composite neonatal adverse outcome consisted of any of the following: stillbirth, neonatal death during the first 24 hours, mechanical ventilation during the first 24 hours, asphyxia, 5-minute Apgar score <7, pH arterial cord blood<7.0, neonatal intensive care unit admission.