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. 2009 Oct 7;2009(4):CD003246. doi: 10.1002/14651858.CD003246.pub2

Macer 1984.

Methods RCT.
Participants 85 women. Singleton, cephalic, Bishop score > 4.
Interventions IV oxytocin 
 vs 
 vaginal PGE2 3 mg x1, then IV oxytocin 4hrs later if still not in labour.
Outcomes C/S, serious maternal morbidity or death, cervix unfavourable after 12‐24 hrs, uterine hyperstimulation without FHR changes, instrumental vaginal delivery, Apgar score < 7 at 5 minutes, maternal side effects, postpartum haemorrhage.
Notes No mention of randomisation technique or allocation concealment.
Risk of bias
Bias Authors' judgement Support for judgement
Adequate sequence generation? High risk  
Allocation concealment? Unclear risk Not clear whether allocation could be anticipated by those recruiting women to the study.
Blinding? 
 Women High risk Different treatment regimes.
Blinding? 
 clinical staff High risk  
Blinding? 
 outcome assessor High risk  
Incomplete outcome data addressed? 
 All outcomes Low risk  
Free of selective reporting? Low risk