- Withdrawal (coitus interruptus)
- Man withdraws his penis from his partner’s vagina, and ejaculates outside the vagina, keeping semen away from her external genital
- Tries to keep sperm out of the woman’s body, preventing fertilization
- 73% effective. One of the least effective methods, because proper timing of withdrawal is often difficult to determine
- Fertility awareness methods (natural family planning or periodic abstinence)
- Calendar-based methods: keep track of days of the menstrual cycle to identify the start and end of the fertile time. Include Standard Days Method and calendar rhythm method.
- Symptom-based methods: monitoring cervical mucus and body temperature. Includes TwoDay Method, Basal body temperature (BBT) method, Ovulation method and Symptothermal method.
- The couple prevents pregnancy by avoiding unprotected vaginal sex during most fertile days, usually by abstaining or by using condoms
- 75% effective.
Source: WHO, 2011