Abstract | OBJECTIVE: METHODS: We asked 120 women who had been treated with the regimen to keep daily bleeding diaries for 9 weeks. We compared bleeding patterns observed after treatment with usual patterns reported by the participants and with patterns observed in a prior study on women who had not taken ECPs. RESULTS: Treatment in the first 3 weeks of the menstrual cycle significantly shortened that cycle as compared both with the usual cycle length and with the cycle duration in a comparison group. The magnitude of this effect was greater the earlier the pills were taken. In contrast, the duration of the first menstrual period after treatment increased significantly with cycle week of treatment and was longer in women who used the treatment than in those who did not. Intermenstrual bleeding occurred in only 5% of women in the first cycle after treatment. CONCLUSIONS:
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Authors | Elizabeth G Raymond, Alisa Goldberg, James Trussell, Melissa Hays, Elizabeth Roach, Douglas Taylor |
Journal | Contraception
(Contraception)
Vol. 73
Issue 4
Pg. 376-81
(Apr 2006)
ISSN: 0010-7824 [Print] United States |
PMID | 16531171
(Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
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Chemical References |
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Topics |
- Adult
- Contraception, Postcoital
(adverse effects)
- Female
- Humans
- Levonorgestrel
(administration & dosage, adverse effects)
- Menstrual Cycle
(drug effects)
- Time Factors
- Uterine Hemorrhage
(epidemiology)
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