Ho 1996.

Methods	Randomisation schedule was prepared as described by Meinert. Sealed envelopes with serial numbers on the front and containing the group to which the woman was randomised were opened at recruitment.
Participants	50 pregnant women (group I: 25, group II: 25) Inclusion criteria: 14‐20 weeks gestation. Exclusion criteria: regular use of prescription drugs, IUD in utero, nursing mothers, multiple pregnancies, heavy smokers.
Interventions	All: 200mg mifepristone orally (36‐48 hours later): Group I: 400 μg misoprostol orally, every 3 h, max 5 doses; Group II: 1mg gemeprost vaginally, every 6 hours, max 4 doses. The patient was reassessed after 24h. If there were no signs or symptoms suggestive of imminent abortion, the pregnancy was terminated with 1 mg gemeprost every 3 hours.
Outcomes	Primary outcome: induction of abortion interval, abortion within 24 hours. Secondary outcomes: side‐effects, uterine contractions, blood pressure, pulse rate.
Notes	Definition of abortion: not specified. If the placenta was incomplete, an evacuation of the uterus was carried out. No major complications reported.
Risk of bias
Bias	Authors' judgement	Support for judgement
Allocation concealment?	Low risk	A ‐ adequate
Blinding? All outcomes	High risk
Free of other bias?	Low risk	No statistically significant differences between the groups in terms of maternal age, gestational age and gravidity.