WHO 2000 M400po.

Methods	computer generated random numbers,
Participants	multicentre trial: Beijing, Havana, Helsinki, Ho Chi Min City, Hong Kong, Ljubljana, Melbourne, Moscow, Mumbai, Shanghai, Stockholm, St Petersburg, Szeged, Tbilisi, Tianjin, Tunis, Yerevan, 1589 women ≤ 63 days of amenorrhoea, with positive pregnancy test and uterine size consistent with menstrual history exclusion criteria: contraindications for study drug use, history of thromboembolism, liver disease, regular use of prescription drugs, intrauterine device, suspected ectopic pregnancy, heavy cigarette smoking, breastfeeding, irregular menses
Interventions	group 1: mifepristone 200 mg/po group 2: mifepristone 600 mg/po both groups received misoprostol 400 mcg/po after 48 hours
Outcomes	complete/incomplete/missed/unclassified failed abortion, side effects
Notes	identical placebos, identical pill bottles; power calculation (90% 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