Uninsured persons accounted for nearly one-fifth of the 120 million hospital-based emergency department visits in 2006, according to data released by the Agency for Healthcare Research and Quality (AHRQ) from the Nationwide Emergency Department Sample. This database contains 26 million records from emergency department visits from approximately 1,000 community hospitals nationwide, representing 20 percent of all U.S. hospital emergency departments.
Read the AHRQ press release.