“…This figure is also similar to rates of abstinence following residential rehabilitation (Gossop, Green, Phillips, & Bradley, 1989;Smyth et al, 2005) and 12-week retention rates in substitute maintenance programs (National Treatment Agency for Substance Misuse, 2005). Adherence to medication in this study is thus consistent with others across a range of substance misuse, medical, and psychiatric conditions, and may reflect universal factors such as patient beliefs and attitudes to medical treatment, irrespective of the disorder requiring treatment.…”