The prevalence of treated depression in the United States rose by 20.5% between 2007 and 2015, from 2.88 per 100 in 2007 to 3.47 per 100 in 2015. During this period, the share of treatment covered by Medicaid rose from 19% in 2007 to 36% in 2015. These findings were reported in “Trends in Treatment and Spending for Patients Receiving Outpatient Treatment of Depression in the United States, 1998-2015” by Jason M. Hockenberry, Ph.D.; Peter Joski, MS; Courtney Yarbrough, Ph.D.; et al. The researchers analyzed data from the 1998, 2007, and 2015 Medical Expenditure . . .