Conventional Birth Control: Method and User Effectiveness Rates
| Method | Women with Unintended Pregnancy Within 1 Year of Use (%) | Women Continuing Use at 1 Year (%) | |
|---|---|---|---|
| Typical Use | Perfect Use | ||
| None | 85 | 85 | |
| Spermicide | 29 | 18 | 42 |
| Withdrawal | 27 | 4 | 43 |
| Cervical cap | |||
| Parous | 32 | 26 | 46 |
| Nulliparous | 16 | 9 | 57 |
| Sponge | |||
| Parous | 32 | 20 | 46 |
| Nulliparous | 16 | 9 | 57 |
| Diaphragm | 16 | 6 | 57 |
| Condom | |||
| Male | 15 | 2 | 53 |
| Female | 21 | 5 | 49 |
| Combined pill and minipill | 8 | 0.3 | 68 |
| Evra patch | 8 | 0.3 | 68 |
| NuvaRing | 8 | 0.3 | 68 |
| Depo-Provera | 3 | 0.3 | 56 |
| Lunelle | 3 | 0.05 | 56 |
| Intrauterine device | |||
| Copper T | 0.8 | 0.6 | 78 |
| Mirena | 0.1 | 0.1 | 81 |
| Norplant and Norplant-2 | 0.05 | 0.05 | 84 |
| Female sterilization | 0.5 | 0.5 | 100 |
| Male sterilization | 0.15 | 0.10 | 100 |
Reproduced with permission from Hatcher R, Trussell J, Stewart F, et al. Contraceptive Technology 18th ed. Ardent Media, Inc, New York, NY, 2004.4