Bertini 2005.

Methods	Unblinded randomised controlled trial recruited from 1 centre in Brazil.
Participants	70 women. Inclusion criteria: GDM diagnosed as >= 110 mg/dl fasting plasma glucose and >= 140 mg/dl OGTT after 2 h of 75 g of glucose.
Interventions	3 groups: insulin as conventional therapy, glyburide, and acarbose. All women received diet and exercise programmes.
Outcomes	Gestational age at birth, Apgar scores, birthweight, neonatal hypoglycaemia.
Notes
Risk of bias
Bias	Authors' judgement	Support for judgement
Allocation concealment (selection bias)	Unclear risk	D ‐ Not used