"Overall, lower levels of acquisitive offending and high-cost offending were recorded at follow-up. Among those who continued to offend, improvements in offending behaviour at follow-up, in terms of a decrease in its volume and/ or the costs associated with it, were observed. Crack users, injecting users, users with high SDS [Severity of Dependence Scores] scores, and those with previous treatment experience were more likely to offend than others at any point.
"The Drug Treatment Outcomes Research Study (DTORS) was one example of European research with encouraging results regarding employment (Jones et al., 2009). This study investigated drug use, health and psychosocial outcomes in 1 796 English drug users attending a range of different types of treatment service. Follow-up interviews were conducted between 3 and 13 months after baseline (soon after initial treatment entry).