O4 The levonorgestrel vs. copper intrauterine device for emergency contraception: A non-inferiority randomized controlled trial

      Objectives: In the United States, more intrauterine contraceptive users select the levonorgestrel than the copper IUD. However, clinicians only offer the copper IUD for emergency contraception (EC) because no data assess the efficacy of the levonorgestrel IUD for EC. We compared pregnancy risk with the levonorgestrel and copper IUD for EC.
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