“…As such, acute-care models oriented around isolated treatment episodes or focused on core treatment activities to the exclusion of ancillary needs and environmental triggers of relapse are likely to be inappropriate in treating these disorders (McLellan, 2002). The effectiveness of case management in addiction treatment is well established, and other studies, which demonstrate the effectiveness of comprehensive service provision to these populations, suggest that programs that facilitate referral to such services are likely to realize superior client outcomes (McLellan et al, 1998(McLellan et al, , 1999Pringle et al, 2002). Moreover, the results of the Drug Abuse Treatment Outcome Study point to the importance of treatment retention in predicting successful posttreatment outcomes (Hubbard, Craddock, Flynn, Anderson, & Etheridge, 1997).…”