Su 2005.

Methods	Random allocation; computer‐generated schedule randomisation; numbered, sealed, opaque envelope; envelopes were drawn in consecutive order.
Participants	125 pregnant women (group I: 61, group II: 64) Inclusion criteria: 12‐24 weeks gestation. Exclusion criteria: multiple pregnancies, ≥ 2 previous cesarean sections, missed abortion, oligohydramnios, severe asthma, allergy to prostaglandins.
Interventions	Group I: vaginal misoprostol 400 μg /3h, max 5d in 24 hrs. Group II: intra amniotic PGF2α 1,5mg, max 5d in 24 hrs.
Outcomes	Primary outcome: induction to abortion interval. Secondary outcomes: abortion within 24 and 48 hours, the need for repeat course of medications, evacuation of uterus, adverse effects.
Notes	Definition of abortion: expulsion of the fetus. Evacuation of the uterus was not performed routinely. 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 parity.