Silver Book Fact
An estimated 80% of surgical patients report post-operative pain. Around 10% to 50% of those patients develop persistent pain, and for 2% to 10% of them the persistent pain is severe.
Apfelbaum, Jeffrey L, Connie Chen, Shilpa S Mehta, and Tong J Gan. Postoperative Pain Experience: Results from a national survey suggest postoperative pain continues to be undermanaged. Anesth Analg. 2002; 97(2): 534-40. http://www.anesthesia-analgesia.org/content/97/2/534.full