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Birth Control Failure Rates

Percentage of Women With Accidental Pregnancy in the First Year of Use
 

Method

Typical Use

Perfect Use

Male Condom
14
3
Female Condom
21
5
Diaphragm (with spermicide)
20
6
Cervical cap (with spermicide)
20 to 40
9 to 26
Sponge
20 to 40
9 to 20
Spermicide only
26
6
Both the cervical cap and the diaphragm are much more likely to fail when used by women who have given birth before. The lower failure rates provided are for women who have never given birth; the higher rates are for women who have previously given birth.
Last reviewed by: Kristi Monson, PharmD
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