TY - JOUR AU - Ackerberg,Daniel A. AU - Machado,Matilde P. AU - Riordan,Michael H. TI - Measuring the Relative Performance of Providers of a Health Service JF - National Bureau of Economic Research Working Paper Series VL - No. 8385 PY - 2001 Y2 - July 2001 UR - http://www.nber.org/papers/w8385 L1 - http://www.nber.org/papers/w8385.pdf N1 - Author contact info: Daniel Ackerberg Department of Economics University of Michigan Lorch Hall Ann Arbor, MI 48109 E-Mail: ackerber@econ.ucla.edu Michael Riordan Columbia Business School 608 Uris Hall 3022 Broadway New York, NY 10027 Tel: (212) 854-9152 E-Mail: mhr21@columbia.edu AB - A methodology is developed and applied to compare the performance of publicly funded agencies providing treatment for alcohol abuse in Maine. The methodology estimates a Wiener process that determines the duration of completed treatments, while allowing for agency differences in the effectiveness of treatment, standards for completion of treatment, patient attrition, and the characteristics of patient populations. Notably, the Wiener process model separately identifies agency fixed effects that describe differences in the effectiveness of treatment ('treatment effects'), and effects that describe differences in the unobservable characteristics of patients ('population effects'). The estimated model enables hypothetical comparisons of how different agencies would treat the same populations. The policy experiment of transferring the treatment practices of more cost-effective agencies suggests that Maine could have significantly reduced treatment costs without compromising health outcomes by identifying and transferring best practices. ER -