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. 2014 Jul 28;2014(7):CD001777. doi: 10.1002/14651858.CD001777.pub4

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]