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Birth ControlWithdrawal as a birth control methodIn this method, also called coitus interruptus, the man withdraws his penis from the vagina before ejaculation. Fertilization is prevented because the large quantity of sperm in the ejaculate, isn't released in the vagina.Effectiveness depends on the male's ability to withdraw before ejaculation and the pre-ejaculatory fluid having too few sperm to make fertilization likely. Failure rates vary from 4-19%, depending on the man's ability to fully withdraw from the vagina before the ejaculate is released. Also, withdrawal doesn't provide protection from sexually transmitted diseases (STDs), including HIV. Infectious diseases can be transmitted by direct contact with surface lesions and by pre-ejaculatory fluid.
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