ERIC Number: ED449394
Record Type: RIE
Publication Date: 2000-Mar
Reference Count: 0
Using Case-Mix Adjustment Methods To Measure the Effectiveness of Substance Abuse Treatment: Three Examples Using Client Employment Outcomes.
Koenig, Lane; Fields, Errol L.; Dall, Timothy M.; Ameen, Ansari Z.; Harwood, Henrick J.
This report demonstrates three applications of case-mix methods using regression analysis. The results are used to assess the relative effectiveness of substance abuse treatment providers. The report also examines the ability of providers to improve client employment outcomes, an outcome domain relatively unexamined in the assessment of provider effectiveness. This outcome is measured as the change between the number of days clients were paid for work in the 30 days prior to the intake interview and the 30 days before the follow-up interview. Consistent with previous research, the results confirm the need to use case-mix adjustment methods when assessing provider effectiveness. Although researchers may have long been aware of this finding, it is now crucial that those involved in the assessment of treatment providers recognize the importance of case-mix adjustment. Analyses accounting for differences in client characteristics reduce the risk of drawing inappropriate conclusions regarding the effectiveness of substance abuse treatment, thus limiting the possibility that incorrect treatment and treatment funding decisions are made. In addition, results show that estimates of provider rankings varied little across the three regression models when controlling for case mix, suggesting that provider rankings are not especially sensitive to choice of method. Implications for research, policy, and practice are discussed. (Contains 1 figure, 3 tables, and 27 references.) (MKA)
Publication Type: Reports - Research
Education Level: N/A
Sponsor: Substance Abuse and Mental Health Services Administration (DHHS/PHS), Rockville, MD. Center for Substance Abuse Treatment.
Authoring Institution: Caliber Associates, Fairfax, VA.; National Evaluation Data Services, Rockville, MD.; Lewin Group, Inc., Washington, DC.