Number of outpatient-surgery centers in Pennsylvania up

The number of outpatient-surgery centers rose in Pennsylvania in 2007, according to a report from the Pennsylvania Health Care Cost Containment Council. Total margins for the ambulatory-surgery centers rose from 20.85% in fiscal 2006 to 24.74% in fiscal 2007. Their margins have increased an average of 2.2 percentage points per year since fiscal 2001.