The most conservative numbers I've seen are 1 in 20 boys along with 1 in 5 girls. Back in the fifties it was something like 1 in 1,000,000 so either things have taken a considerable turn for the worse or survivors started finding their voice : P Now, if we take into account the incredible amount of pressure placed upon boys not to "tell" (to themselves and others) it starts to paint a picture of why that number is so low. Unfortunately, society really really really doesn't want to deal with the issue of child sex abuse. Preventative education in schools? Don't infringe upon parents rights to teach their kids (even though 7 out of 10 victims are abused by family members)! Improve national mental health infrastructure? Not enough resources to go around (even though many physiological, economic, sociological, etc. problems could be curtailed by early intervention/de-stigmatization/ongoing care)! As to Still's points I think those allude to some very good questions as well so why not put some money and effort towards that research too so we can fight this thing at its roots. Sadly, the day we decide to do all or some of these things the first thing that's going to happen is the above numbers will "go up" (due to increased reporting) but that's only a prelude to their eventual decline as we successfully implement socially healthy procedures and cultural norms.