What is the efficacy of coitus interruptus contraception?

Updated: Oct 06, 2020
  • Author: Frances E Casey, MD, MPH; Chief Editor: Richard Scott Lucidi, MD, FACOG  more...
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Effectiveness depends largely on the man's capability to withdraw prior to ejaculation. The failure rate is estimated to be approximately 4% in the first year of perfect use. In typical use, the rate is approximately 22% during the first year of use.

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