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

Creinin 2001.

Methods random number tables in blocs of ten, sealed opaque envelopes prepared by person not involved in the trial
Participants 80 pregnant women, ≤ 49 days pregnant, single pregnancy, confirmed by ultrasound, at the University hospital Pittsburgh, USA; 
 exclusion criteria: contraindication to mifepristone/misoprostol administration, haemoglobin < 10 gm/dL, cardiovascular disease, coagulopathies, IUCD in situ, breast feeding
Interventions mifepristone 100mg (all) 
 after 2 days, home administration: 
 group 1: misoprostol 400mcg oral 
 group 2: misoprostol 800mcg vaginal
Outcomes complete abortion, onset of bleeding &cramping, duration of bleeding, side effects
Notes power calculation power calculation (80% power, significance level of 0.05) 
 no major complications were reported
Risk of bias
Bias Authors' judgement Support for judgement
Allocation concealment (selection bias) Low risk A ‐ Adequate