What do you think?

I was pulling the news wires today when I came across a study by Texas Tech University that found a  correlation between multiple tattoos or piercings and "deviant behavior."
The group surveyed 1,753 students at four colleges and found they engage in more promiscuity, more drug use, more binge drinking, more arrests and more cheating on academics than their peers.
The correlation with deviant behavior came among the 4 percent of students who had four or more tattoos, seven or more piercings, or one "intimate piercing," researchers said.
If you write YA, are you using piercings and tattoos in your character descriptions? Have you thought about what this says about your character? Interesting stuff. What do you think?