Contraception Clinical Trial
Official title:
A Phase III, Randomized, Open-label, Active-controlled, Multicenter Trial to Study the Contraceptive Efficacy and Safety of the Commercial Batch of Oral Tablets of MK-8175A (Nomegestrol Acetate - 17ß-estradiol) in Healthy, Sexually-active Women Aged 18-50 Years
The purpose of this study was to assess the contraceptive efficacy of a nomegestrol acetate + 17ß-estradiol (NOMAC-E2) combined oral contraceptive (COC) in healthy, sexually-active American women at risk for pregnancy. Vaginal bleeding patterns of women taking NOMAC-E2 were assessed and compared to those of women taking a norethisterone acetate + ethinyl estradiol (NETA-EE) COC. The safety of NOMAC-E2 was also assessed. Participants were randomized to receive either NOMAC-E2 or NETA-EE in a 3:1 ratio. As of Amendment 1 (which increased the sample size of the NOMAC-E2 group), the randomization ratio was adapted accordingly for participants randomized after the sample size increase.
This study was terminated early. The decision to terminate the study was based upon difficulties encountered with data collection (related to incomplete e-Diary entries) in concert with business considerations. The decision was not related to any new or unexpected safety or efficacy findings with NOMAC-E2. As a result of this early termination, none of the pre-specified efficacy endpoints were analyzed. ;
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