The following blog argues that there is sloppy accounting in the claimed 90+% reduction of homelessness.
"Although overall homelessness has actually increased slightly over the past decade in Utah, such a large reduction in chronic homelessness is still an impressive achievement. But is it real?
Unfortunately, no. I spent some time studying Utah’s data and found that the miraculous 91 percent reduction in chronic homelessness appears to be driven by changes in how people were counted, rather than by how many there were."
"Although overall homelessness has actually increased slightly over the past decade in Utah, such a large reduction in chronic homelessness is still an impressive achievement. But is it real?
Unfortunately, no. I spent some time studying Utah’s data and found that the miraculous 91 percent reduction in chronic homelessness appears to be driven by changes in how people were counted, rather than by how many there were."
http://m.huffpost.com/us/entry/9380860