Abstinence education and statistics

Whether it might have worked in someone's case or not, this is the where the statistical evidence comes down on pledges and abstinence education. Has anyone discovered a bias in this research?

Jim Jordan on Virginity Pledges

I think this is right on target.

I have nothing against advocating abstinence. But first, I doubt that the public school curriculum is the best place to do that. (People who won't give any other domestic job to "gummint" want to give this one to the government?) Further, the definition of an abstinence program seems to be one that denies contraceptive information to teenagers. If I were a rebellious teenager I certainly would resent the fact that important information was being withheld from me, that I wasn't being told the whole truth.

Sadly enough, if there are any guys out there like some of the ones I grew up with, wearing a chastity ring is tantamount to putting the logo of a certain discount store on one's back. The one with the red circles, you know.