From the OC Register:
Contrary to popular opinion, a UC Irvine study finds that undocumented immigrants in Orange County use fewer medical services than citizens or legal residents. The biggest reason appears to be lack of health insurance, according to the study using data collected in 2006 through a phone survey. "It's a common misperception that undocumented immigrants overuse medical services and rely primarily on hospital emergency rooms for care," study author and anthropologist Leo Chavez said in a statement.  "Despite what we hear in the public debate, there is not a great deal of social science data on health care for undocumented immigrants."

For the full story, please visit http://www.ocregister.com/articles/undocumented-321817-services-study.html.