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Copper T380A intrauterine device for emergency contraception: a prospective, multicentre, cohort clinical trial
1National Research Institute for Family Planning, Beijing, China.
Objective:
To determine the effectiveness of the Copper T380A (CuT380A) intrauterine device (IUD) as an emergency contraceptive in women.
Design:
Prospective, multicentre, cohort clinical trial.
Setting:
Eighteen family planning clinics in China.
Sample:
A cohort of 1963 women, aged 18-44 years, requesting emergency contraception within 120 hours of unprotected sexual intercourse.
Methods:
Women requesting emergency contraception were followed at 1, 3 and 12 months after the insertion of CuT380A.
Main Outcome Measures:
Efficacy of CuT380A as emergency contraception and for up to 12 months of postinsertion use. Insertion complication rates, reported side-effects and continuation rates at 12 months were also recorded.
Results:
No pregnancies occurred prior to or at the first follow-up visit, making CuT380A 100% effective as emergency contraception in this study. The pregnancy rate over the 12-month period was 0.23 per 100 women. In all, 29 (1.5%) women experienced a difficult IUD insertion process, requiring local anaesthesia or prophylactic antibiotics. No uterine perforations occurred. The main side-effects were increased menstrual bleeding and menstrual disturbances. The 12-month postinsertion continuation rate was 94.0 per 100 woman-years.
Conclusions:
CuT380A is a safe and effective method for emergency contraception. The advantages of CuT380A include its ability to provide effective, long-term contraception.
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