Asgharnia 2002.

Methods	Randomised controlled trial.
Participants	120 women in preterm labour between 24‐32 weeks' gestation with intact membranes and cervical dilation ≥ 2 cm. Exclusion criteria: PROM, complete cervical dilatation, severe haemorrhage, chorioamnionitis, high‐order multiple pregnancy (≥ triplets), fetal or placental abnormality or sensitivity to tocolytic drugs.
Interventions	COX group: indomethacin. 25 mg every 6 h (p.o.) up to maximum of 4 doses. Control group: MgSO4. Bolus dose of 4 g (i.v.) followed by 2 g/h (i.v.) given in 5% dextrose at 10‐25 µg/min (i.v.). Both groups: antibiotics as required and 5 mg dexamethasone every 12 h up to 4 doses.
Outcomes	Gestational age, mode of delivery, frequency of uterine contractions, dilatation and effacement and delivery delay.
Notes	This paper was published in a non‐English language and has been translated for the purpose of this review.
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Unclear risk	Unable to determine how randomisation was performed.
Allocation concealment (selection bias)	Unclear risk	Method of allocation concealment not stated.
Blinding of participants and personnel (performance bias) All outcomes	High risk	Not stated, but there is no mention of simultaneous placebo treatment to adjust for differences in drug administration and it is likely that participants and personnel were not blinded.
Blinding of outcome assessment (detection bias) All outcomes	High risk	Not stated, but there is no mention of simultaneous placebo treatment to adjust for differences in drug administration and it is likely that participants and personnel were not blinded.
Incomplete outcome data (attrition bias) All outcomes	Low risk	All randomised women were included in reporting.
Selective reporting (reporting bias)	Unclear risk	Unable to determine.
Other bias	Unclear risk	Unable to determine.