Comparison 27. Copper intrauterine device versus mifepristone (all doses).

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Observed number of pregnancies (all women)	2	395	Risk Ratio (M‐H, Fixed, 95% CI)	0.33 [0.04, 2.74]
2 Any side effect	1	285	Risk Ratio (M‐H, Fixed, 95% CI)	0.06 [0.00, 0.99]
3 Specific side effects	1		Risk Ratio (M‐H, Fixed, 95% CI)	Subtotals only
3.1 Lower abdominal pain	1	285	Risk Ratio (M‐H, Fixed, 95% CI)	73.61 [4.48, 1208.50]
4 Menses	1		Risk Ratio (M‐H, Fixed, 95% CI)	Subtotals only
4.1 Delay	1	284	Risk Ratio (M‐H, Fixed, 95% CI)	0.23 [0.09, 0.64]