Prager 2008.

Methods	RCT, not blinded.
Participants	Term pregnancy, BS 6 or less, different indication for IOL, including PROM Exclusion criteria: previous CS, malpresentation, immediate delivery indicated, contraindication to vaginal delivery, contraindication to PGs.
Interventions	Foley catheter 30 cc (199). Dinoproston 2 mg 6‐hourly (191). Misoprostol 25 mcg vaginally 4‐hourly (199).
Outcomes	Uterine hyperstimulation, CS, epidural analgesia, instrumental delivery, meconium, AS, NICU admissions, fever during delivery.
Notes	Hyperstimulation is not further specified (with of without FHR changes). Patients who did not meet inclusion criteria were not excluded retrospectively Setting: Karolinska university Hospital, Sweden Dates of study: December 2004 to March 2008 Funding sources: not reported Declarations of interest: not reported
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Low risk	Computer‐generated sequence.
Allocation concealment (selection bias)	Low risk	Opaque numbered envelopes.
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	Low risk	Missing data described: 3 dinoprostone and 1 catheter. these were excluded.
Selective reporting (reporting bias)	Low risk	All outcomes prespecified in methods were reported, report includes all expected outcomes.
Other bias	Unclear risk	Patients who did not meet inclusion criteria were not excluded retrospectively (n = 32).