http://www.fda.gov/fdac/features/1997/babytabl.html
U.S. Food and Drug Administration
The Food and Drug Administration has approved a number of birth control methods. The choice of birth control depends on factors such as a person's health, frequency of sexual activity, number of sexual partners, and desire to have children in the future. Failure rates, based on statistical estimates, are another key factor. This document presents a comparison of different birth control methods.