“…This was true even when controlling for other predictors of treatment engagement, including homelessness, being on parole, and long-term drug use (Millery et al, 2002). Further, a belief that treatment is efficacious – or the converse, that one will relapse without it – is associated with a desire to stay in treatment longer for patients already in BUP or MMT maintenance treatment (Bentzley, Barth, Back, Aronson, & Book, 2015; Winstock, Lintzeris, & Lea, 2011), as well as with actual retention in MMT (Kayman, Goldstein, Deren, & Rosenblum, 2006). …”