“…Rapp, 2006;Vanderplasschen, Rapp, Wolf, & Broekaert, 2007). Over the many years in which the impact of case management in substance abuse treatment has been assessed, the positive contribution of this service to engagement and retention remains the most robust finding to date (Kim et al, 2011;Krupski, Campbell Rapp et al, 2014;Sosin & Durkin, 2007;Vanderplasschen et al, 2004Vanderplasschen et al, , 2007Winn et al, 2013). In a recent meta-analysis, R. Rapp and associates (2014) noted the impact of case management on treatment tasks, in particular activities that link clients to a range of needed services, as well as treatment retention.…”