RT Journal A1 Berkowitz SA, Katz MH T1 THinking our way to better treatments of chronic pain JF Archives of Internal Medicine JO Archives of Internal Medicine YR 2012 FD January 9 VO 172 IS 1 SP 10 OP 11 DO 10.1001/archinternmed.2011.547 UL http://dx.doi.org/10.1001/archinternmed.2011.547 AB Pain is common in the adult population, with 20% to 40% of adults reporting chronic pain.1 In primary care settings, up to 20% of visits generate an opioid prescription,1 and in the United States overall, 4 million adults are prescribed a long-acting opioid each year.2 As these prescriptions have increased, so have consequences, such as impairment, overdose, diversion, and dependence.2