Pain Management - Data - 1999 - 2-20-10

According to a public opinion poll released in 1999, "It is estimated that 9% of the U.S. adult population suffer from moderate to severe non-cancer related chronic pain."

Source

Roper Starch Worldwide, Inc., "Chronic Pain In America: Roadblocks To Relief," research conducted for the American Pain Society, the American Academy of Pain Medicine and Janssen Pharmaceutica, Jan. 1999.