Hay 1995.

Study characteristics
Methods	RCT. No details were given on the method for concealment of the allocation.
Participants	28 women in the comparison between Dilapan and PGE2, with a total of 39 women recruited (15 Dilapan group, 13 PGE2 group, 11 amniotomy).
Interventions	Dilapan versus PGE2, no details on dosage provided.
Outcomes	CS, hyperstimulation, nausea.
Notes	Abstract only. Setting: UK Study period: not reported Funding: not reported Declarations of interest: not reported
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Unclear risk	Not reported
Allocation concealment (selection bias)	Unclear risk	Not reported
Blinding of participants and personnel (performance bias) All outcomes	Unclear risk	Not feasible due to nature of intervention
Blinding of outcome assessment (detection bias) All outcomes	Unclear risk	Not reported
Incomplete outcome data (attrition bias) All outcomes	Unclear risk	Insufficient information to judge
Selective reporting (reporting bias)	Unclear risk	Insufficient information to judge
Other bias	Unclear risk	Abstract only