Cohn 1992.

Study characteristics
Methods	RCT
Participants	Number of women randomised: 248 Setting: Hong Kong, China Study date: not mentioned but abstract published in 1992 Inclusion criteria GA: "on reaching 42 weeks' gestation" No indication for immediate delivery Exclusion criteria Not described State of cervix: Not reported
Interventions	Induction group (n = not reported): induction versus EM group (n = not reported): women were seen twice weekly.
Outcomes	Mother: length of stay in hospital; analgesia; caesarean birth; meconium‐stained liquor Baby: neonatal admission for meconium aspiration; birthweight; Apgar scores; umbilical cord vein pH
Notes	Abstract only. No data included in meta‐analyses Funding: not reported Declaration of interests: not reported
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Unclear risk	" A prospective randomised study". The method of sequence generation was not reported.
Allocation concealment (selection bias)	Unclear risk	The method of allocation concealment was not reported.
Blinding of participants and personnel (performance bias) All outcomes	High risk	Blinding was not feasible.
Blinding of outcome assessment (detection bias) All outcomes	Unclear risk	Blinded outcome assessment was not mentioned.
Incomplete outcome data (attrition bias) All outcomes	Unclear risk	No information on losses to follow‐up or exclusions
Selective reporting (reporting bias)	Unclear risk	Abstract only
Other bias	Unclear risk	Abstract only. Baseline characteristics were not described.