Literature Collection

Randomized controlled trials have demonstrated that the collaborative care model for depression in primary care is more effective than usual care, but little is known about the effectiveness of this approach in real-world settings. We used patient-reported outcome data from 11,303 patients receiving collaborative care for depression in 135 primary care clinics to examine variations in depression outcomes. The average treatment response across this large sample of clinics was substantially lower than response rates reported in randomized controlled trials, and substantial outcome variation was observed. Patient factors such as initial depression severity, clinic factors such as the number of years of collaborative care practice, and the degree of implementation support received were associated with depression outcomes at follow-up. Our findings suggest that the level of implementation support could be an important influence on the effectiveness of collaborative care model programs.

Aiming to increase care access, the national Primary Care-Mental Health Integration (PC-MHI) initiative of the Veterans Health Administration (VHA) embedded specialists, care managers, or both in primary care clinics to collaboratively care for veterans with psychiatric illness. The initiative's effects on health care use and cost patterns were examined among 5.4 million primary care patients in 396 VHA clinics in 2013-16. The median rate of patients who saw a PC-MHI provider was 6.3 percent. Each percentage-point increase in the proportion of clinic patients seen by these providers was associated with 11 percent more mental health and 40 percent more primary care visits but also with 9 percent higher average total costs per patient per year. At the mean, 2.5 integrated care visits substituted for each specialty-based mental health visit that did not occur. PC-MHI was associated with improved access to outpatient care, albeit at increased total cost to the VHA. Successful implementation of integrated care necessitates significant investment and multidisciplinary partnership within health systems.

Substance use and illicit drug use are a growing problem in the United States. SUDs occur when the recurrent use of alcohol or drugs causes significant impairment, such as health problems. The veteran population has been particularly at risk. Veterans are 1.5 times more likely to die from opioid overdose than the general population, according to VA and Centers for Disease Control and Prevention data. Furthermore, veterans live in rural areas at a higher rate than the general population, which may affect their ability to access SUD services. VA is the largest integrated health care system in the United States, providing care to about 6.2 million veterans. VA provides SUD services through outpatient, inpatient, and residential care settings and offers various treatment options, including individual and group therapy, medication-assisted treatment, and naloxone kits to reverse overdoses. This report describes (1) trends in the number of and expenditures for veterans receiving SUD services, including specialty SUD services; and (2) any differences between veterans' use of SUD services in rural and urban areas, and the issues affecting access to those services in rural areas.; Background. -- Number of veterans receiving, and expenditures for, VHA specialty SUD services have remained unchanged in recent years, community care SUD services have increased. -- Veterans' usage differed between urban and rural areas for some specialty SUD services; VHA is taking steps to address access issues in rural areas. -- Agency comments. -- Appendices.