Percent of Women Experiencing Unintended Pregnancy within One Year Method | Percentage w/ Typical Use | Percentage w/ Perfect Use | | No protection | 85% | 85% | | Spermicide (foam or film) | 29% | 18% | | Withdrawal | 27% | 4% | | Condom (female) | 21% | 5% | | Cervical cap (in women who have never given birth) | 16% | 9% | | Sponge (in women who have never given birth) | 16% | 9% | | Diaphragm | 16% | 6% | | Condom (male) | 15% | 2% | | Oral contraceptives | 8% | 0.3% | | Patch | 8% | 0.3% | | Injectable Contraception | | Depo-Provera | 3% | 0.3% | | Lunelle | 3% | 0.05% | | Intrauterine Contraception | | Copper T IUD | 0.8% | 0.6% | | LNG-IUS | 0.1% | 0.1% | | Implant | 0.05% | 0.05% | | Emergency contraceptive pills: Treatment initiated within 72 hours after unprotected sexual intercourse reduces the risk of pregnancy by at least 75%. | Source: Hatcher RA et al. Contraceptive Technology. 18th rev. edition. New York, NY: Ardent Media, 2004.
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