The whole article (from Newsweek, posted at AQ) is worth reading, but these are the three paragraphs which I would highlight:
Since the mid-1980s, insurance companies have offered sexual misconduct coverage as a rider on liability insurance, and their own studies indicate that Catholic churches are not higher risk than other congregations. Insurance companies that cover all denominations, such as Guide One Center for Risk Management, which has more than 40,000 church clients, does not charge Catholic churches higher premiums. "We don't see vast difference in the incidence rate between one denomination and another," says Sarah Buckley, assistant vice president of corporate communications. "It's pretty even across the denominations." It's been that way for decades. While the company saw an uptick in these claims by all types of churches around the time of the 2002 U.S. Catholic sex-abuse scandal, Eric Spacick, Guide One's senior church-risk manager, says "it's been pretty steady since." On average, the company says 80 percent of the sexual misconduct claims they get from all denominations involve sexual abuse of children. As a result, the more children's programs a church has, the more expensive its insurance, officials at Guide One said.
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.