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

Andersen 1990.

Methods RCT.
Participants 88 women. Cephalic, live fetus, ruptured membranes, Bishops score < 6, no evidence of infection.
Interventions IV oxytocin 
 vs 
 vaginal PGE2 tablets.
Outcomes C/S, cervix unfavourable after 24/48 hours, instrumental vaginal delivery, Apgar scores, maternal side effects, postpartum haemorrhage.
Notes No mention of randomisation or allocation technique.
Risk of bias
Bias Authors' judgement Support for judgement
Adequate sequence generation? Unclear risk No information provided.
Allocation concealment? Unclear risk Not stated.
Blinding? 
 Women High risk Not feasible. Vaginal tablets were compared with IV oxytocin (no placebo).
Blinding? 
 clinical staff High risk  
Blinding? 
 outcome assessor High risk  
Free of selective reporting? Low risk