Association among outcomes in a naturalistic statewide assessment of substance user treatment.

Substance user treatment outcome measurement is important for research and policy questions, yet little literature has addressed the relationships among outcome measures of treatment success. Ideally, treatment outcomes would correlate to at least a moderate degree. The Iowa Department of Public health requires substance user treatment programs receiving public funds to provide client information. Demographic information, "substance abuse" history, current use, arrests, and hospitalizations were ascertained at admission and a 6-month follow-up for 1374 clients (from January 1999 to December 2000). Abstinence, arrests, and hospitalizations were good outcome measures of substance user treatment success. Reduction in frequency of use was negatively associated with arrests, substance use-related hospitalizations, and increased income. Full-time employment at follow-up produced different results depending on the client's sex. However, all associations among outcomes were modest. Specificity may be reasonable in some instances; however, other situations might require a broad-spectrum approach that ideally would produce a wide range of benefits.