Lyndrup 1989.

Study characteristics
Methods	RCT.
Participants	Woman with unfavourable cervix.
Interventions	4 groups: oxytocin without Lamicel (according to a fixed schedule, with a max of 32 mU per minute) (24 women); oxytocin with Lamicel (1 unit) (22 women); PGs without Lamicel (2.5 mg PGE2) (19 women); PGs with Lamicel (1 unit) (20 women).
Outcomes	CS, forceps or vacuum extraction, endometritis.
Notes	Setting: Denmark 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	Only reported women were randomised by sealed envelope method
Allocation concealment (selection bias)	Low risk	Sealed 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	High risk	6 women excluded for protocol violation.
Selective reporting (reporting bias)	Unclear risk	No outcomes were pre specified in method section.
Other bias	Low risk	No other bias detected