also...
i also found this while i was researching, thought u might find it interesting.
To get a valid comparison between our sample and the U.S. Census Statistical Report, 1999, on the personal demographics of marriage, education, work, and religion, each test-taker had to be 25 years and older because the Census Statistical Report used 25 years or older for those measurements. Our sample of 13,476 men age 25 and older closely matched the U.S. male population on these demographics.
Religious: U.S. males, 93 percent vs. our sample, 93 percent.
http://stopchildmolestation.org/pages/study2.html