A new study by the Duke University Medical Center reports that 31 percent of women, between the ages of 15 and 24, use the ineffective and archaic "withdrawal" method of contraception.
Not surprisingly, 21 percent of those women had an unintentional pregnancy. The surprising study will be published in the September issue of Obstetrics and Gynecology.
Withdrawal is a method from decades ago before contraceptives were available in the U.S.
The study was comprised of 2,220 women between 2006 and 2008, notes the Daily Mail.
"Our study showed that use of withdrawal for contraception is very common, but it doesn't work as well as other methods," said study author Dr. Annie Dude.
"My overall take is that doctors think this is such an antiquated method of birth control that they don't really think to address it with their patients. Doctors think this is such an antiquated method of birth control that they don't really think to address it with their patients."
However, that may be understandable as the U.S. spends billions of dollars each year in sex education on the web, TV, radio and billboards.
Source: Daily Mail