Journal
FERTILITY AND STERILITY
Volume 106, Issue 1, Pages 151-+Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.fertnstert.2016.02.036
Keywords
LNG-IUS; etonogestrel implant; contraception; discontinuation; LARC
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Funding
- Bayer Pharma AG
- Bayer HealthCare Pharmaceuticals
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Objective: To compare the levonorgestrel intrauterine system (LNG-IUS 8), which has an average levonorgestrel release rate of similar to 8 mu g/24 hours during the first year (total levonorgestrel content 13.5 mg; Jaydess/Skyla), with the etonogestrel (ENG) subdermal implant (total content, 68 mg) with regard to the 12-month discontinuation rate (primary outcome). Design: Randomized, open-label, phase III study. Setting: Thirty-eight centers in six European countries. Patient(s): Study population of 766 healthy nulliparous and parous women aged 18-35 years. Intervention(s): The LNG-IUS 8 or the ENG implant. Main Outcome Measure(s): Discontinuation rate, by treatment group, at Month 12. Result(s): The 12-month discontinuation rates were 19.6% and 26.8% in the LNG-IUS 8 and ENG implant groups, respectively. The -7.2% difference was statistically significant (95% confidence interval -13.2%, -1.2%). Fewer women in the LNG-IUS 8 group than in the ENG implant group discontinued because of increased bleeding (3.2% vs. 11.3%) or adverse events (14.3% vs. 21.8%). At 12 months, more women in the LNG-IUS 8 group than in the ENG implant group were very/somewhat satisfied'' with their bleeding pattern (60.9% vs. 33.6%) and reported a preference to use their study treatment after study completion (70.1% vs. 58.5%). Conclusion(s): The LNG-IUS 8 was associated with a significantly lower 12-month discontinuation rate compared with the ENG implant; mainly because ENG implant users frequently discontinued due to increased bleeding. More LNG-IUS 8 users than ENG implant users reported being very/somewhat satisfied'' with their bleeding pattern, and reported a preference to continue using their study treatment after the study. (C) 2016 by American Society for Reproductive Medicine.
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