Bleeding patterns after immediate initiation of an oral compared with a vaginal hormonal contraceptive.

@article{Westhoff2005BleedingPA,
  title={Bleeding patterns after immediate initiation of an oral compared with a vaginal hormonal contraceptive.},
  author={Carolyn Westhoff and Lauren M. Osborne and Julie E. Schafer and Chelsea Morroni},
  journal={Obstetrics and gynecology},
  year={2005},
  volume={106 1},
  pages={
          89-96
        }
}
OBJECTIVE This study compared 84-day bleeding patterns after immediate initiation of a triphasic oral contraceptive with a 25-mug daily dose of ethinyl estradiol (E2) compared with the contraceptive vaginal ring, which has a 15-mug daily dose of ethinyl E2. METHODS This was an open-label controlled trial. We randomly assigned 201 women to immediate start of a contraceptive pill or immediate start of the ring in a 1:1 allocation ratio. Our primary outcome was difference in mean bleeding… CONTINUE READING

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