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. 2011 Nov 9;2011(11):CD002855. doi: 10.1002/14651858.CD002855.pub4

Koopersmith 1996.

Methods randomisation into 3 groups 
 randomisation procedure not stated
Participants 58 women, pregnant ≤ 10 weeks, confirmed by ultrasound, University Hospital Los Angeles, USA 
 Exclusion criteria: uterine infection, prior uterine bleeding, cervical dilatation, anaemia, cardiovascular or cerebral disease, allergy to misoprostol
Interventions group A: misoprostol 100mcg/vaginally/ 8 hourly to a maximum of 6 doses 
 group B: misoprostol 100mcg/vaginally/ 8 hourly to a maximum of 6 doses and tamoxifen 10mg/orally after the first dose of misoprostol 
 group C: misoprostol 100mcg/vaginally/ 8 hourly to a maximum of 6 doses and laminaria/intracervical immediately before the first dose of misoprostol 
 the dose of misoprostol was increased after the success rate was unsatisfactory after the first 26 women
Outcomes complete abortion, failure rate, side effects, mean number of doses of misoprostol used, time until passing of conceptus
Notes no mentioning of major complications
Risk of bias
Bias Authors' judgement Support for judgement
Allocation concealment (selection bias) Unclear risk B ‐ Unclear