“…In brief, we found no overall significant difference between oral treatment and insulin for the following outcomes (with the numbers in brackets denoting the total number of RCTs and observational studies respectively): rates of preeclampsia (3,6), caesarean delivery (6,8), maternal 2-hour PG (1, 1), maternal mean BG (1,1), maternal HbA 1c (2, 0), induction of labour (3, 1), macrosomia (2,8), LGA (3, 6), perinatal mortality (4, 6), birth trauma (3, 5), hyperbilirubnaemia (3,4), need for phototherapy (2,6), SGA (2, 5), NICU admission (3,8), congenital malformations (3, 6), respiratory distress (3, 5) and 1-minute Apgar score (1,4).…”