Great graph Lukster.

Sincerely appreciated it.
Anyway Sandy, my only point originally was that you can tell teens that if they choose to be sexually active then they can expect that at least 1 in 5 of them will end up with an STD, and then even point out that those odds are actually worse than the 1 in 6 chance you have playing Russian Roulette and yet it will probably not impact their decision.
In counseling I've found that if the kid has no
real ethical/religious convictions regarding pre-marital sex, that they either dismiss the possibility of an STD entirely or blindly assume that they will be one of the other 4 individuals who dodges the bullet. Of course none of this addresses the long term emotional damage done to young females in particular. As one female counselor down here pointed out to a distraught girl she was counseling,
"Honey, when are you going to realize there's no such thing as a contraceptive to protect your heart?" Fathers used to understand that and worked hard to protect their daughters from the scads of young cads who come sniffing around. A few still do, I wish there were more.