197
Participants
Start Date
January 31, 2005
Primary Completion Date
June 30, 2008
Study Completion Date
June 30, 2008
Combined estrogen-progestin pill
1 mg norethindrone and .035 mg ethinyl estradiol orally for 21 days followed by 7 days of placebo
Progestin-only pill
.35 mg norethindrone once a day orally
American College of Obstetricians and Gynecologists
OTHER
University of New Mexico
OTHER