Analysis of three interventions for substance abuse treatment of severely mentally ill people.

Severely mentally ill people with co-occurring substance abuse disorders are difficult to treat and the course of their psychiatric treatment is worsened by substance abuse. Despite increased attention to the problem, few studies of specialized treatment are reported in the literature and most lack detail about the specialized interventions employed. Qualitative data, gathered as part of a larger study of the cost-effectiveness of three substance abuse interventions for severely mentally ill people, are presented which describe the interventions, their implementation in four community mental health centers over 18 months of the study, and their relationship to the quantitative outcomes. Illustrated is the difficulty of implementing innovative programs and the need for vigilance concerning program fidelity.