Comparison 2. Immediate insertion: Lippes Loop versus Copper 7.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Discontinuation due to pregnancy (750 days)	2	2257	Risk Ratio (M‐H, Fixed, 95% CI)	1.12 [0.71, 1.75]
2 Discontinuation due to expulsion (750 days)	2	2257	Risk Ratio (M‐H, Fixed, 95% CI)	1.12 [0.87, 1.44]
3 Discontinuation due to perforation (750 days)	2	2257	Risk Ratio (M‐H, Fixed, 95% CI)	0.67 [0.11, 3.99]
4 Discontinuation due to total medical removals (750 days)	2	2257	Odds Ratio (M‐H, Fixed, 95% CI)	1.30 [1.01, 1.67]
5 Discontinuation due to pelvic inflammatory disease (750 days)	2	2257	Risk Ratio (M‐H, Fixed, 95% CI)	0.41 [0.12, 1.43]