Pregnancy rate (percent) during first year of use of contraceptives
| Typical use | Correct use | |
| Condom | ||
| Male | 18 | 2 |
| Female | 21 | 5 |
| Diaphragm | 12 | 6 |
| Sponge | ||
| Previous births | 24 | 20 |
| No previous births | 12 | 9 |
| Fertility awareness-based methods | ||
| Cervical mucus or ovulation | 24 | 3 |
| Symptothermal | 24 | 0.4 |
| TwoDay | 24 | 4 |
| Standard days | 24 | 5 |
| Withdrawal | 22 | 4 |
| Depo-provera (DMPA) injection | 6 | <1 |
| Intrauterine device | ||
| Copper T or Mirena | <1 | <1 |
| Contraceptive patch | 9 | <1 |
| Contraceptive pills | ||
| Progestin only or combination estrogen-progestin | 9 | <1 |
| Contraceptive vaginal ring | 9 | <1 |
| Female sterilization | <1 | <1 |
| Vasectomy | <1 | <1 |
| Etonogestrel implant | <1 | <1 |
| Spermicides | 28 | 18 |
| No method | 85 | 85 |
Data refer to number of pregnancies per 100 women during first year of use.
Typical use: refers to failure rates for women and men whose use is not consistent or always correct.
Correct use: refers to failure rates for those whose use is consistent and always correct.
Typical use: refers to failure rates for women and men whose use is not consistent or always correct.
Correct use: refers to failure rates for those whose use is consistent and always correct.
* Rate reflects cumulative pregnancy rate in the first six months following birth.
Data adapted from: Contraceptive Technology, 20th edition, 2011 and Trussell J. Contraceptive failure in the United States. Contraception 2011; 83:397.