Substance use health services research

This report provides an introduction to substance use health services resea rch based upon the conceptual model of Andersen and Aday and demonstrates h ow the subsequent papers provide important insights into issues raised in t his conceptual model. These issues include access and barriers to health ca re, needs for care, health care utilization, outcomes of care, and costs of care. We show how these issues are also expanded beyond more traditional d efinitions. We conclude by indicating some broad areas for further research .