Pregnancy rates for birth control methods
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The following table provides estimates of the percent of women likely to become pregnant while using a particular contraceptive method for one year. These estimates are based on a variety of studies.
| Method | Typical Use Rate of Pregnancy | Lowest Expected Rate of Pregnancy |
|---|---|---|
| Sterilization: | ||
| Male Sterilization | 0.15% | 0.1% |
| Female Sterilization | 0.5% | 0.5% |
| Hormonal Methods: | ||
| Implant (Norplant) | 0.09% | 0.09% |
| Hormone Shot (Depo-Provera) | 0.3% | 0.3% |
| Combined Pill (Estrogen/Progestin) | 5% | 0.1% |
| Minipill (Progestin only) | 5% | 0.5% |
| Intrauterine Devices (IUDs): | ||
| Copper T | 0.8% | 0.6% |
| Progesterone T | 2% | 1.5% |
| Barrier Methods: | ||
| Male Latex Condom1 | 14% | 3% |
| Diaphragm2 | 20% | 6% |
| Vaginal Sponge (no previous births)3 | 20% | 9% |
| Vaginal Sponge (previous births)3 | 40% | 20% |
| Cervical Cap (no previous births)2 | 20% | 9% |
| Cervical Cap (previous births)2 | 40% | 26% |
| Female Condom | 21% | 5% |
| Spermicide: (gel, foam, suppository, film) | 26% | 6% |
| Natural Methods: | ||
| Withdrawal | 19% | 4% |
| Natural Family
Planning
(calendar, temperature, cervical mucus) |
25% | 1-9% |
| No Method: | 85% | 85% |
1 Used Without Spermicide
2 Used With Spermicide
3 Contains Spermicide
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