Perhaps having a severe mental illness is somehow important for you but I still don't see how is it relevant in this context other than it shows that the fracti

Perhaps having a severe mental illness is somehow important for you but I still don't see how is it relevant in this context other than it shows that the fraction of homeless with it is ~4x bigger than in regular population so it's likely the rest of them are suffering with less than severe mental illness (not even taking drug addiction into account).