As reported in the Journal of the American Medical Association
October 20, 1999- Vol.282, No. 15, 1405-1407.

Implant 2.4%
Pill 9%
Diaphragm & cervical cap 13%
Male Condom 15%
Withdrawal 26%
Spermicides 28%

“Failures are highest among cohabiting and other unmarried women, among low income, African-American and Hispanic women, among adolescents and women in their 20s. For example, adolescent women who are not married but cohabiting (living with boyfriend) experience a failure rate of about 47% in the first year of contraceptive use, while the 12 month failure rate among married women 30 and older is only 8%.”*

Data taken from the 1995 National Survey of Family Growth (NSFG) and the 1994-1995 Abortion Patient Survey (APS)

* It should be noted that except for the condom, none of these birth control methods provide any reduction in infection with sexually transmitted diseases (STDs), some of which can lead to infertility (inability to bear children), birth defects, and premature death. Condoms provide partial risk reduction for some STDs, but not others.