Ok, I took the few seconds (lazy me!!!) to look it up. From
http://www.medicalnewstoday.com/releases/21606.php ...
Although teenagers who take "virginity pledges" begin engaging in vaginal intercourse later than teens who have not committed to remain abstinent until marriage, they also are more likely to engage in oral or anal sex than nonpledging virgin teens and less likely to use condoms once they become sexually active