Pineda Rivas 2016.

Methods	RCT
Participants	Inclusion criteria: obese (BMI > 30 before 20 weeks' GA). Singleton pregnancy. Vertex presentation, BS < 6, Intact membranes,GA 37 + 0 to 42 + 0. Normal fetal heart tracing on admission for ripening Exclusion: IOL for intrauterine fetal demise, Intrauterine growth restriction, Suspected abruption at the start of induction, contraindication for a vaginal delivery
Interventions	Foley catheter (n = 20): PGE2 (n = 21): dinoprostone 10 mg slow release for 24 hours
Outcomes	Time from initiation of IOL to vaginal delivery, number of vaginal deliveries within 24 hours in each group, CS operative vaginal deliveries chorioamnionitis oxytocin administration, epidural, ICU (NICU) admission, arterial pH < 7, AS < 7 at 5 minutes
Notes	Abstract only Setting: Canada 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