Wing 2005.

Methods	Computer‐generated, random‐number sequence in sealed, opaque envelopes. Participants randomly allocated to sequential study number to get either mifepristone or standard regimen of intravenous oxytocin.
Participants	65 women with spontaneous prelabour rupture of membranes beyond 36 weeks of gestation, and cervical dilatation < 3 cm.
Interventions	Single dose of 200 mg mifepristone (N = 33) or IV oxytocin (N = 32). If labour has not started within 18 hours, labour was induced with oxytocin IV in the mifepristone group.
Outcomes	Obstetric, neonatal.
Notes	Previous CS excluded.
Risk of bias
Bias	Authors' judgement	Support for judgement
Adequate sequence generation?	Low risk	Adequate: "randomly allocated to the computer generated random number sequence".
Allocation concealment?	Low risk	Adequate: "treatment assignments were placed in opaque, concealed and sequentially numbered envelopes".
Blinding? All outcomes	High risk	Neither the participants or the personnel were blinded to the treatment received.
Incomplete outcome data addressed? All outcomes	Low risk	Adequate as all participants completed the study and none were excluded in data analysis.
Free of selective reporting?	Low risk	Adequate as all outcomes were reported.
Free of other bias?	Low risk	Study completed.

CS: caesarean section 
 h: hours 
 IUGR: intrauterine growth retardation 
 IV: intravenous