Benzineb 1996.

Methods	RCT. Blocks of 10 women. No other details were given on the method for randomisation and on concealment of the allocation.
Participants	Singleton vertex term pregnancies with intact membranes, BS < 6.
Interventions	Foley catheter inflated with 40 mL of water (50 women); PGE2 intracervical gel 0.5 mg every 24 hours. (n = 50?)
Outcomes	Vaginal delivery not achieved within 24 hours, CS, perinatal deaths, cervix unchanged after 24 hours, postpartum haemorrhage.
Notes	Setting: Charles Nicolle Hospital, Tunis Dates of study: 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	Only reported women were random allocated in blocks of 10
Allocation concealment (selection bias)	Unclear risk	Unclear. 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	ITT not mentioned, no missing data or cases reported
Selective reporting (reporting bias)	Unclear risk	Outcomes not pre‐specified
Other bias	Low risk	No other bias detected