I used today the figure of 13%, and I have the precise wording, in fact, of the questions that were posed.
Those who were 14- to 15-year-olds were asked whether they had ever had sexual intercourse; 12- to 13-years-olds we asked whether they had sexual intercourse with a boyfriend or girlfriend, and so forth. It is a specific measure of a specific type of sexual activity. I can't really speak to whether the other data to which you are referring has a broader definition, but the 13% specifically refers to that question.