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

Herabutya 1991.

Methods RCT.
Participants 47 women PROM, term pregnancy, primips, Bishop score < 5.
Interventions IV oxytocin, immediate. 2 mU per minute increasing by 2 mU per minute every 30 minutes up to 24 mU per minute 
 vs 
 vaginal PGE2 3.0 mg, then IV oxytocin 4 hrs later.
Outcomes C/S, instrumental vaginal delivery, Apgar score < 7 at 5 minutes, maternal nausea, maternal vomiting, maternal diarrhoea.
Notes No mention of randomisation technique or allocation concealment.
Risk of bias
Bias Authors' judgement Support for judgement
Adequate sequence generation? Unclear risk No information given.
Allocation concealment? Unclear risk Not described.
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 No post‐randomisation exclusions apparent.
Free of selective reporting? Low risk  
Free of other bias? Unclear risk Small study without powere to detect differences in outcomes.