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birth control by the use of devices or drugs or surgery


100, not having sex

birth control pill

92-99, mechanical, a pill used to prevent pregnancy


99, chemical, insertion on upper arm to prevent pregnancy


97-99, chemicals put into body to prevent pregnancy

contraceptive patch

99, mechanical, patch put on body with chemicals to prevent preg

vaginal ring

99, chemical, ring placed inside vagina that prevents sperm from reaching egg

intrauterine device

98, chemical, t or copper t, inside vag

male condom

85-98, mechanical, latex placed over penis

female condom

79-95, mechanical, latex "cap" placed inside vagina

diaphragm or cervical cap

84-91, mechanical, inserted in vagina


71-85, chemical, kills sperm

withdrawal/coitus interuptus

effectiveness varies, pull out of sex before orgasm

fertility awareness methods

75-99, have sex based on calendar which shows when it is safe and when its not

no method

15, use nothing

vasectomy or tubal ligation

99, surgical prevention

emergency contraception

effectiveness varies, Use of high-dose contraceptives after unprotected sex to prevent pregnancy

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