A substantial body of evidence for Collaborative Care has emerged since its development at the University of Washington in the 1990s. Beginning with the seminal IMPACT Trial published in 2002, more than 90 randomized controlled trials and several meta-analyses have shown the Collaborative Care model (CoCM) to be more effective than usual care for patients with depression, anxiety, and other behavioral health conditions.
A review of 79 randomized controlled trials and 24,308 patients worldwide comparing collaborative care with routine care or alternative treatments (such as consultation-liaison) for depression and anxiety.
This handout shows the differences between the two types of care given in the IMPACT trial, usual care and collaborative care.
A meta-analysis of the evidence for collaborative depression care examining 37 randomized controlled trials with 12,355 total patients.