Comparison 1. combined regimen mifepristone/prostaglandin: dose of mifepristone.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 failure to achieve complete abortion	6		Risk Ratio (M‐H, Fixed, 95% CI)	Subtotals only
1.1 all	6	6841	Risk Ratio (M‐H, Fixed, 95% CI)	0.90 [0.77, 1.05]
1.2 600mg vs 200mg	4	3494	Risk Ratio (M‐H, Fixed, 95% CI)	1.07 [0.87, 1.32]
1.3 200mg vs 100 mg (>49 days)	1	1182	Risk Ratio (M‐H, Fixed, 95% CI)	0.89 [0.61, 1.29]
1.4 600mg vs 200mg with gemeprost 1mg/pv	2	1685	Risk Ratio (M‐H, Fixed, 95% CI)	1.02 [0.72, 1.45]
1.5 200mg vs 100 mg (</=49 days)	1	941	Risk Ratio (M‐H, Fixed, 95% CI)	0.79 [0.47, 1.33]
2 side effects	2		Risk Ratio (M‐H, Fixed, 95% CI)	Totals not selected
2.1 nausea	2		Risk Ratio (M‐H, Fixed, 95% CI)	0.0 [0.0, 0.0]
2.2 vomiting	1		Risk Ratio (M‐H, Fixed, 95% CI)	0.0 [0.0, 0.0]
2.3 diarrhoea	1		Risk Ratio (M‐H, Fixed, 95% CI)	0.0 [0.0, 0.0]
3 time until passing of conceptus > 3‐6 hours	2	1116	Risk Ratio (M‐H, Fixed, 95% CI)	0.89 [0.74, 1.07]
4 ongoing pregnancy	5		Risk Ratio (M‐H, Fixed, 95% CI)	Subtotals only
5 surgical evacuation	1		Risk Ratio (M‐H, Fixed, 95% CI)	Subtotals only