| Popis: |
The long-term contraceptive effectiveness of subdermal silastic implants containing 30-40 mg of the progestin R-2323 (13-ethyl-17 alpha ethinyl-17 hydroxy-gona-4, 9,11-trien-3-one), was studied in 531 women. 98 women received 2 capsules (Group A), 180 received 3 capsules (Group B), 181 received 4 capsules (Group C) and 68 received 5 capsules (Group D). There were 5 pregnancies reported for Group A over 610 months of use, 3 pregnancies for 2124 months of use in Group B, 4 pregnancies for 2128 months of use in Group C, and Group D had 3 pregnancies over 732 months of use. All of the pregnancies in Group A occurred in the first 4 months while pregnancies in the other 3 groups generally occurred between Months 6-12 of use. Amenorrhea was most frequent during Months 2-6. The frequency of spotting and breakthrough bleeding was minimal. |
