A prospective, randomised study to compare the effectiveness of the 24 hour versus 12 hour double doses regimen of levonorgestrel for emergency post-coital contraceptio

Completed

• Conditions: Contraception; Pregnancy and Childbirth

• Registration Number: ISRCTN06428555
• Lead Sponsor: World Health Organisation (WHO) (Switzerland)

Brief Summary

Not available

Detailed Description

Not available

Study Timeline

• Study Start: 2004-04-01
• Last Update Posted: 13 January 2015

Recruitment & Eligibility

• Status: Completed
• Sex: Female
• Target Recruitment: 2071

Inclusion Criteria

1. Requesting emergency contraception within 120 hours of unprotected intercourse
2. Only one act of unprotected intercourse during current cycle
3. Willing to abstain from further acts during current cycle
4. Regular menstrual cycles (24 to 42 days)
5. Having at least one spontaneous cycle before current cycle
6. Available for follow-up in the next six weeks
7. Negative pregnancy test
8. Willing to participate
9. Not breastfeeding
10. No use of hormonal contraceptives or of rhythm or natural family planning method of contraception during current cycle
11. Not unsure about the date of last menstrual period

Exclusion Criteria

1. Post-abortion or post-partum patients whose period had not yet returned
2. Regular use of prescription drugs before admission to the study
3. Intercourse during the treatment cycle greater than 120 hours before admission into the study

Study & Design

• Study Type: Interventional
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
Pregnancy rate

Secondary Outcome Measures

Name	Time	Method
1. Delay in onset of next menses<br>2. Incidence of side-effects