(Portland, OR) -- Portland State University researchers have released a new report on Portland Street Response. It reviews the first six months after expanding the program citywide. PSR responded to over 32-hundred calls, which is a 700-percent increase from the same period last year when it was operating in a single neighborhood. 64-percent of calls involved someone who was homeless. The calls taken by PSR reduced calls to the police by three-percent. No PSR calls resulted in arrests. The program currently operates seven days a week from 10 a.m. to 10 p.m. Next summer it will expand to around-the-clock operations.