Westergaard 1983.

Methods	Allocation: sealed envelopes. Blinding: None described. Study period: 24 months, specific dates not stated.
Participants	Inclusion criteria: women admitted for induction of labor with single live fetus in cephalic position and membranes intact. Setting: University hospital, Odense, Denmark.
Interventions	Women with unfavorable cervix (n = 264): oral PGE2 0.5 mg increasing to 1.5 mg per hour if needed (n = 133) vs demoxytocin 50 IU every 1/2 hour (n = 131). Women with favorable cervix underwent amniotomy (n = 259 of which 136 progressed into labour within 4 hours without medication). The remaining 123 women received oral PGE2 as above (n = 48) vs demoxytocin as above (n = 75).
Outcomes	Induction failure (defined as lack of regular contractions and cervical dilatation of 5 cm within 48 hours or 8 hours of spontaneous or artificial rupture of membranes). Treatment time. Duration of labor. Apgar score < 7. Mode of delivery. Gastrointestinal side‐effects. Uterine hypertonus.
Notes
Risk of bias
Bias	Authors' judgement	Support for judgement
Allocation concealment (selection bias)	Low risk	A ‐ Adequate