Yes. Those data come from the Corrections itself and through the correctional investigator. They show a whole range of reasons. Some are mental health reasons. People are engaging in self-harm or are seen as a threat to themselves. It's essentially for their own safety. Sometimes they're in a dispute with another prisoner. They might need it for safety for that reason.
There's a whole range of reasons, but CSC's own reports and literature—I'm looking at one of the reports over the years from the correctional investigator—show that a lot of the placements and security incidents that cause people to be placed in segregation result from poor interactions between staff and prisoners or from limited interactions between staff and prisoners. Research shows that better dynamic security and relationships between prisoners and staff can really radically reduce the number of behaviours that would cause someone to be placed in an isolating situation in the first place.