Costs measure
mental illness
We considered all direct and indirect healthcare costs in relation with care management during the follow-up. Resource use data were retrieved from two sources: hospital-based administrative databases and patients’ self-reported measures. Resource use for each collaborative hospital was retrieved for all randomized patients. To measure ambulatory and community care, and at the margin to supplement hospital registry data, interview grids were built to assist participants in reporting individual and prospective resource use, based on previous studies of service use among people with mental illness (Latimer Unit costs for hospital resources were estimated using data from the French National Hospital Database (