Contraception

Contraceptive choice is often made based on how well the method prevents pregnancy. The effectiveness of each contraceptive method depends, in part, on how consistently and correctly it is used. Use can either be perfect (consistent and correct) or typical (which usually applies to the average person because it is sometimes difficult to always and reliably use contraception correctly). The information above gives more information on different types of contraceptives and compares the percentage of women who will get pregnant during the first year of use when the method is used perfectly and when it is used typically.

When no contraception is used, 85 out of 100 women having sex will get pregnant in the first year.

All the figures quoted are from:
Trussell J. Contraceptive efficacy. In Hatcher RA, Trussell J, Stewart F, Nelson A, Cates W, Guest F, Kowal D. Contraceptive Technology: Eighteenth Revised Edition. New York NY: Ardent Media, 2004.