Casey 1995.

Methods	RCT. No details were given on the method for concealment of the allocation.
Participants	Singleton term pregnancies, BS < 6.
Interventions	PGE2 intracervical gel and intracervical Foley catheter inflated with 50 cc (78 women); PGE2 intracervical gel (68 women).
Outcomes	CS.
Notes	Abstract only. Setting: USA Study period: not reported, 11‐month period Funding: not reported Declarations of interest: not reported
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Unclear risk	Only reported it was a RCT
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	Too little information to judge
Selective reporting (reporting bias)	Unclear risk	Too little information to judge
Other bias	Unclear risk	Abstract only