ROBERT SIEGEL: Shocking, tragic and indefensible - that's how one church official described allegations of child sexual abuse leveled at Australia's Catholic Church. A Royal Commission in Australia has been examining thousands of claims of abuse. And according to data they released this week, 7 percent of priests in Australia's Catholic Church were accused of child sexual abuse. That's over the course of more than 60 years between 1950 and 2015.

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SIEGEL: Now that figure of 7 percent, as disturbing as it is, is as I understand it an average. There were orders according to the Royal Commission where the number of brothers accused of pedophilia was 20 percent, in one case 40 percent. Are those orders still operating in Australia?

RACHEL BROWNE: Yes, they are. They're operating worldwide. You know, these are large religious orders. And John of God was the order where 40 percent of the members were allegedly offenders. So that is really a breathtaking number. It's not a huge order in Australia. There's only just over a hundred members, but larger orders would be the Christian Brothers. They're a very big order in Australia. They run a lot of schools. The other large order which is - also had a very high proportion of alleged perpetrators is the Marist Brothers. And one of the things that they're looking at in the Royal Commission is why these orders had such a high proportion of alleged perpetrators. So we'll find out more about that as the hearing continues.