Naismith 1972.

Methods	Randomisation by 'random lottery draw'.
Participants	20 primigravaed women who were post term with singleton cephalically presenting fetuses.
Interventions	Oxytocin (maximum of 300 mU/min) versus oxytocin (maximum of 300 mU/min) and intravenous prostaglandin E2 (0.5 ug/min fixed rate). Amniotomy was performed at the start in each case.
Outcomes	Caesarean and instrumental delivery data available.
Notes
Risk of bias
Bias	Authors' judgement	Support for judgement
Allocation concealment?	Unclear risk	B ‐ Unclear