“…Burns and colleagues (2007) cite the failure to control for previous hospital utilization as the main reason for the inconsistency, as ICM appears most effective at reducing hospitalized days among patients with a history of repeated hospitalizations or known to be at high risk of hospitalization (Burns et al, 2000;Mueser, Bond, Drake, & Resnick, 1998;Prince, 2006;Rosen, Bond, & Teesson, 2008;Tyrer, 2000a). ICM is more effective in settings with an ample supply of treatment and support services such as managed care environments (Meyer & Morrissey, 2007). Other possible reasons for the lack of outcome consistency include varying health care contexts, with ICM more effective in countries without global health care coverage (Burns et al, 2007;Burns, Fioritti, Holloway, Malm, & Rossler, 2001).…”