Fertility awareness methods require training, commitment, discipline, and determination in order to be effective. Cooperation is necessary by both partners who should be in a stable, monogamous relationship. Some couples choose NFP for religious reasons while others may be allergic to latex options like condoms (although there are latex-free condoms) and diaphragms. Also, woman may prefer this option because they cannot tolerate hormonal contraceptive options. The average effectiveness rate of all the various fertility awareness methods:
- Typical use: 77-88% effective
- Perfect use: 95-98% effective
- Of every 100 women who use one of the NFP methods, 12-23 will become pregnant within the first year (with typical use) and 2-5 will become pregnant with perfect use.
Methods Include: standard days method, calendar method, Billings method, ovulation method, cervical mucus, basal body temperature and symptothermal method

