Comparisons are actually quite difficult to do, because parole sometimes is decided by the courts and in some jurisdictions it's decided by the correctional authorities. I'm more than happy to share with the committee the 1999 study, as well as the 2005 update. I think the researcher may already have it, but I'm more than happy to share it. It may give you a bit of additional information on this matter.
On November 18th, 2010. See this statement in context.