Silver Book Fact
A study of people with persistent pain found that they were 2.5 times more likely to think about suicide than those without pain, 3.5 times more likely to plan suicide, and 6.2 times more likely to have attempted suicide in the previous 12 months.
Illgen M, Zivin K, McCammon R, Valenstein M. Pain and Suicidal Thoughts, Plans, and Attempts in the United States. Gen Hosp Psychiatry. 2008; 30(6): 521-7. http://www.sciencedirect.com/science/article/pii/S0163834308001643