Key clinical point: Depression in patients with chronic pain remained fairly stable between 2011 and 2015, but a significant upward trend was found among black patients, patients aged 65 to 84 years, Medicaid patients, and those from areas with the lowest levels of annual household income.

Major finding: The adjusted hospitalization cost for patients with depression increased from $43,585 in 2011 to $49,923 in 2015.

Study details: The data come from an observational study of 10.3 million adults with chronic pain the United States identified between 2011 and 2015.

Disclosures: The researchers disclosed no financial conflicts.