| Methods | Lowest observed failure rate (%) | Failure rate intypical user (%) | |
|---|---|---|---|
| Tubal sterilization | 0.3 | 0.3 | |
| Vasectomy | 0.4 | 0.4 | |
| Injectable progestin (DEPO) | 0.3 | 0.3 | |
| Progestin implant (Norplant) | 0.09 | 0.09 | |
| Combined oral contraceptive pill | 0.1 | 3 | |
| Progestin-only pill | 0.5 | 3 | |
| Copper T-380A intrauterine device | 0.6 | 0.8 | |
| Condom | |||
| Male | 3 | 12 | |
| Female | 5 | 21 | |
| Diaphragm (with spermicide) | 6 | 18 | |
| Patch | 1 | 3 | |
| Ring | 0.7 | 3 | |
| Cervical cap | 11.5 | 18 | |
| Foams, creams, etc. | 6 | 21 | |
| Coitus interruptus (withdrawal) | 16 | 23 | |
| Fertility awareness techniques (e.g., rhythm) | 2 | 24 | |
| Douche | — | 40 | |
| Chance (no method of birth control) | 85 | 85 | |