A multicenter clinical investigation employing ethinyl estradiol combined with dl-norgestrel as a postcoital contraceptive agent

A. A. Yuzpe, R. P. Smith, A. W. Rademaker

Research output: Contribution to journalArticlepeer-review

132 Scopus citations

Abstract

692 women were enrolled in a multicenter clinical trial to evaluate a combination of ethinyl estradiol and dl-norgestrel as a postcoital contraceptive. When compared with various formulas predicting the probability of pregnancy in this group, the number of pregnancies observed appears to be reduced to approximately 84%. The combination of 200 μg of ethinyl estradiol and 2 mg of dl-norgestrel seems to be effective as a postcoital contraceptive with several advantages over estrogens alone.

Original languageEnglish (US)
Pages (from-to)508-513
Number of pages6
JournalFertility and Sterility
Volume37
Issue number4
StatePublished - Jan 1 1982

ASJC Scopus subject areas

  • Reproductive Medicine
  • Obstetrics and Gynecology

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