It was a very comprehensive study, in the sense that Statistics Canada was able to get a list of everyone who released over the ten-year period from 1996 to 2007. There would be some that were dropped, but for the most part it would be an inclusive list of everyone who was released during that time period, except that we did not include reserves, not because we didn't want to, but because there were problems with the data and information.
On February 14th, 2012. See this statement in context.