The 10 Year Course of AA Participation and Long-Term Outcomes: A Follow-up Study of Outpatient Subjects in Project MATCH DOI: 10.1080/08897077.2012.691450 Maria E. Pagano Ph.D. a , William L. White M.A. b , John F. Kelly Ph.D. c , Robert L. Stout Ph.D. d , Rebecca R. Carter B.A. e & J. Scott Tonigan Ph.D f Accepted author version posted online: 23 May 2012 ABSTRACT This study investigates the 10-year course and impact of AA-related helping (AAH), step-work, and meeting attendance on long-term outcomes. Data were derived from 226 treatment-seeking alcoholics recruited from an outpatient site in Project MATCH and followed for 10 years post-treatment. Alcohol consumption, AA participation, and other- oriented behavior were assessed at baseline, end of the 3-month treatment period, and one year, three years, and 10 years post-treatment. Controlling for explanatory baseline and time-varying variables, results showed significant direct effects of AAH and meeting attendance on reduced alcohol outcomes and a direct effect of AAH on improved other- oriented interest. Keywords: Alcoholics Anonymous , Project MATCH , Meeting Attendance , Step-work , AA-related helping Disclaimer As a service to authors and researchers we are providing this version of an accepted manuscript (AM). Copyediting, typesetting, and review of the resulting proofs will be undertaken on this manuscript before final publication of the Version of Record (VoR). During production and pre-press, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal relate to these versions also. Author affiliations a Case Western Reserve University School of Medicine, Department of Psychiatry, Division of Child Psychiatry, WO Walker Building, 10524 Euclid Ave., Cleveland, OH, 44106 b Chestnut Health Systems, 3329 Sunset Key Circle #203, Punta Gorda, FL, 33955 c Department of Psychiatry, Harvard Medical School, Center for Addiction Medicine, 60 Staniford St., 02114, Boston, MA d Decision Sciences Institute, Pacific Institute for Research Evaluation, 1005 Main Street, Pawtucket, RI, 02860 e Case Western Reserve University School of Medicine, Department of Psychiatry, Division of Child Psychiatry, WO Walker Building, 1052 4Euclid Ave., Cleveland, OH, 44106 f The University of New Mexico, Center on Alcoholism, Substance Abuse, and Addiction, 2650 Yale SE, Albuquerque, NM, 87106