Here is an article quoted from the Detroit Free Press (published 2008) that might help you locate Michigan-specific info:
1/08 CCW In Michigan Up, Crime Down - Gun Owners Of America
"John Lott, a visiting professor at the University of Maryland who has done extensive research on the role of firearms in American society, said the results in Michigan since the law changed don't surprise him.
Academic studies of concealed weapons laws that generally allow citizens to obtain permits have shown different results, Lott said. About two-thirds of the studies suggest the laws reduce crime; the rest show no net effect, he said.
But no peer-reviewed study has ever shown that crime increases when jurisdictions enact changes like those put in place by the Legislature and then-Gov. John Engler in 2000, Lott said."
In Michigan, according to Michigan State Police data, since greater access to concealed carry licenses was approved by voters in 2001 (and Michigan became a "shall issue" state), violent crimes have diminished by 14% - a fact that some "experts" try to say cannot be conclusively tied to the increase in CCWs issued. But those same "experts" point to the gun free school zone act and absolutely wet themselves with joy because school-related incidents are supposedly down by a whole 2% since the GFSZA was first enacted in 1990 - something they claim is a direct result of the GFSZA. As they say, figures never lie, but.....
