The only hard data that has been made public by any denomination comes from John Jay College's study of Catholic priests, which was authorized and is being paid for by the U.S. Conference of Catholic Bishops following the public outcry over the 2002 scandals. Limiting their study to plausible accusations made between 1950 and 1992, John Jay researchers reported that about 4 percent of the 110,000 priests active during those years had been accused of sexual misconduct involving children. Specifically, 4,392 complaints (ranging from "sexual talk" to rape) were made against priests by 10,667 victims. (Reports made after 2002, including those of incidents that occurred years earlier, are released as part of the church's annual audits.)Experts disagree on the rate of sexual abuse among the general American male population, but Allen says a conservative estimate is one in 10. Margaret Leland Smith, a researcher at the John Jay College of Criminal Justice, says her review of the numbers indicates it's closer to one in 5. But in either case, the rate of abuse by Catholic priests is not higher than these national estimates. The public also doesn't realize how "profoundly prevalent" child sexual abuse is, adds Smith. Even those numbers may be low; research suggests that only a third of abuse cases are ever reported (making it the most underreported crime). "However you slice it, it's a very common experience," Smith says.
I think that in order to claim that one in five American males is a sexual abuser of children, the definition of "abuse" would have to include "sexual talk aimed at teenage girls who are demonstrating sexual availability" by "males" who are just enough older than the girls to trip over a statute.
We can't have a culture of rampant fornication and also have a culture that (legally) treats postpubescent youth as if they were 3-year-olds, without plunging into absurdity.