This report documents the key findings from a mixed-methods, longitudinal study of service users at Coolmine Therapeutic Community (CTC), a drug and alcohol treatment centre in Dublin.

Chapter 1 provides an introduction to Coolmine Therapeutic Community and the therapeutic community (TC) treatment model. Here, an overview of TC outcomes is reviewed, along with the literature on treatment entry and treatment processes.

Chapter 2 outlines the research design, methodology, and administration procedures. Quantitative and qualitative approaches are discussed and the participant profiles of both streams are presented.

Chapters 3, 4, and 5 present the key quantitative and qualitative findings in three sections: pathways into treatment, the treatment process, and life after treatment.

Chapter 6 concludes the report by discussing the key findings, placing them in the broader context of national and international drug and alcohol treatment outcomes, and summarises key messages for therapeutic communities.