By: Maria E. Pagano Ph.D., William L. White M.A., John F. Kelly Ph.D., Robert L. Stout Ph.D., Rebecca R. Carter B.A. & J. Scott Tonigan Ph.D
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.
INTRODUCTION
Alcoholics Anonymous (AA) has distinguished itself within the alcohol problems arena through its membership size and geographical dispersion (more than 2.1 million members and 100,766 groups in 150 countries), its influence on the modern treatment of alcohol use disorders, and through the volume and growing methodological rigor of research studies on the effects of AA participation (1-3).-analytic reviews of the effects of AA involvement report a positive association between AA participation and abstinence across diverse populations as well as reductions in substance-related health care costs (4-8). Efforts to date to isolate the active ingredients of AA participation have focused primarily on meeting attendance, step-work, and service (9,10).Meeting attendance has been associated with abstinence and a higher number of sober friends (11-13). More step-work at a 3-year follow-up has been associated with decreased alcohol consumption at a 10-year follow-up (14) AA-related helping activities (AAH) are associated with greater abstinence at 1-year and 3-year follow-ups and reduced depression (15-20).
There are several theoretical interpretations of the evolution of service within the 12-step program. First, AAH can be viewed as an application of Riesman’s “helper therapy principle (HTP)”; one’s own problems diminish through the process of helping others (21). AAH applies the long “wounded healer” tradition whereby survivors of a life-altering disorder or experience develop special sensitivities, insights, and skills to be uniquely helpful to others with the same condition (22,23) —a process AA’s co-founder Bill Wilson characterized as “the sublime paradox of strength coming out of weakness”(24). Second, just as an evolutionarily adaptive gene may promote the replication and survival of a particular species (25), AA’s primary purpose, to stay sober and help other alcoholics, may have evolved to sustain the program’s survival. Service positions such as chairperson or secretary further ongoing AA group functioning. Third, AAH can also be understood within AA’s posited theory of self-centeredness as a central factor in the development and maintenance of alcoholism. AA’s main textbook is filled with admonitions of the dangers of selfishness, self-centeredness, self-absorption, self-justification, self-pity, and self-deception. The collective experience of AA’s original 100 members acknowledges self-knowledge, self-reliance, self-control, and self-sufficiency as failed paths to sustaining sobriety (26). Whereas mutual aid alcoholic societies in the 19th century viewed self-assertion as liberating the alcoholic from the disease (27,28), AA’s founders characterized the illness as stemming from the “bondage of self” (26) which could only be broken by personal surrender and self-transcendence.
AA’s main textbook emphasizes key exercises for ego reduction, which others reference as the foundation of recovery (29,30).The AA recovery process involves: a) surrender–admission of powerlessness and personal limitations (Step 1) (“…we had to quit playing God”); b) transcendence of self via reliance on a power greater than self (Step 2); c) witnessed confession of wrongs done to others (Step 5); d) repair of family and social relationships through making amends (Step 9); e) carrying a message of hope to other alcoholics (Step 12), which is often done in ritualized storytelling within a community of recovering people; and f) personal anonymity as a spiritual principle–a metaphoric and literal shedding of self (Tradition 4) (31). Seen in this light, AA is not a “self-help” program but a mutual-help program that rests on the premonition that sustained sobriety cannot be achieved alone (32). AAH enacts many of these exercises designed to increase other-orientation and self-transcendence which occurs quickly for some and slowly for others.
Long-term, prospective study of the course of AA participation across major programmatic activities and impact on behavior is limited. Of the few studies with 5-years or more follow-up post-treatment, Kaskutas and colleagues (33) delineated four long-term patterns regarding AA meeting attendance: 1) low, 2) medium, 3) descending, and 4) high, with highest meeting attendance occurring in the first year following treatment. Long-term participation patterns in other program activities such as step-work and AAH are less clear. While higher meeting attendance in the initial post-treatment period is associated with more improved drinking outcomes (7,34-49), few have studied the long-term influence of other major components on decreased substance use. Further, long-term alcohol investigations of AA’s impact on clinical outcomes beyond drinking are rare. A handful of early studies considered the potential effect of AA participation on a transformation from self-centeredness to increased other-orientation (29,50).Reinert and colleagues (51,52) hypothesized a decline in self orientation with increased years in recovery, but did not find such declines over short periods of time in a sample of AA members.However, increased other-regard, if it occurs through such mechanisms as step-work or AAH, may span years of AA participation.
This paper builds upon prior prospective AAH research to explore the course and impact of AA participation across three major programmatic activities: meeting attendance, step-work, and AAH. In this study, we examine: 1) the 10-year course of AA participation, drinking, and other-oriented behavior, 2) the influence of 12-step facilitated treatment (TSF) on AA programmatic activities and outcomes over time, and 3) the influence of time-varying participation in AA programmatic activities on subsequent drinking and other-oriented behavior.
MEASURES
Background characteristics were assessed at baseline. Time-varying variables (percent days abstinent, 3 indices of AA participation, other-oriented interest) were assessed at baseline, 3-, 15-, 39-, and 120-months post-randomization.
Background Characteristics. Baseline demographic and clinical characteristics included gender, race, marital status, full-time employment status, age, years of education, anti-social personality disorder (ASPD), chemical dependency treatment history, and receipt of Twelve-step Facilitation (TSF). Receipt of TSF versus no TSF (Cognitive Behavioral Therapy, Motivational Enhancement Therapy) was ascertained from Project MATCH’s randomized treatment assignment (42).
Alcohol Use. Alcohol use was defined as percent days abstinent (PDA) using the semi-structured Form 90 (59). The Form 90 is a calendar-based daily drinking estimation method that incorporates a grid-averaging approach to provide a comprehensive and efficient assessment of a person’s drinking over a designated period of time (90 days in this study). It has demonstrated test-retest reliability for treatment-seeking alcoholics (60) and problem use of illicit drugs (61). Given the negatively skewed distribution, PDA variables received an arcsine transformation, as was done in the primary MATCH outcome analyses (54).
AA Participation. Three indices of AA participation variables were measured: 1) AAH, 2) AA meeting attendance (MTG), and 3) step-work. AAH was assessed with the 13-item Alcoholics Anonymous Involvement (AAI) questionnaire (62), a well-validated measure of AA affiliation developed for use in Project MATCH (62). Using criterion from prior work (9), AAH was defined by endorsement of two AAI items: being a sponsor and/or completion of the 12th step in the last 90 days.MTG was assessed from one item on the Form 90, “How many AA meetings have you attended in the past 90 days?” and converted into percent of days attending AA (number of days attending AA/ number of days in the assessment period), for a score ranging from .00-1.00. Because of a positively skewed distribution, MTG was log transformed. Step-work was measured from the continuous AAI item ascertaining completed steps (0-11) in the assessment period, and summed. Using Cohen’s effect size r estimates (63), there was a small correlation between AAH and MTG at any assessment (r = .18-.24, P < .001), a moderate correlation between AAH and step-work (r = .26-.43, P < .001), and a moderate correlation between MTG and step-work (r = .42-.60, P < .001).
Other-Oriented Interest (OOI). One item from the Beck Depression Inventory (BDI;64) was used as an index of AA’s espoused behavior towards others (i.e., “…trying each day to be a little more thoughtful and considerate to those with whom we came in contact” (65; p356). With regard to interest in others in the past week, participants rated the OOI item from 0 (no loss of interest) to 3 (lost all interest). Similar single-item measures have been used in other alcohol investigations (66,67).
DISCUSSION
This study provides a snapshot of what can be expected of outpatients’ AA participation in the decade following their index treatment and highlights the importance of meeting attendance and AAH to long-term behavioral change. Meeting attendance during treatment and in the following decade parallels patterns reported in other prospective 12-step investigations (76,77) meeting attendance was highest during treatment and steadily declined thereafter. In contrast, a relatively stable rate of AAH (9%) and low levels of step-work were observed during and following treatment. Despite a lowered rate of AAH at the 15-month assessment, AAH participants did more step-work and attended more meetings than non-AAH participants at any study interval. TSF treatment significantly boosted AAH participation and step-work relative to the other treatment conditions, but effects were lost after the initial year post-treatment. Extended effects of TSF beyond the initial year post-treatment may be seen with coordination of other 12-step facilitation approaches such as “Bridging the Gap” (78,79), or periodic booster sessions post-treatment, such as Case Monitoring (R01 AA009907; 80).
We next explored the relationship between participation in 3 AA programmatic activities on subsequent drinking and other-oriented behavior over time. Consistent with prior work (6-8,15,16,62), results showed direct effects of meeting attendance and AAH on greater abstinence across time, but not differential benefit of TSF. Controlling for pretreatment levels of OOI, those engaged in AAH were significantly more likely to report higher interest in others. These findings suggest the importance of meeting attendance to abstinence as a newcomer and in long-term recovery, and support AA’s suggestion to help others as way to stave off an urge to drink and increase interest in others.
There are several limitations of this study that warrant attention. This outpatient sample was representative of other outpatient sites in Project MATCH with exception to age and education. Findings may not generalize to non treatment-seeking populations or those with more severe addiction. However, alcohol consumption patterns were similar to 10-year course patterns observed in other samples of problem drinkers (34). Second, treatment effects in this study are limited to the randomized index treatment. Third, our estimates of AAH and OOI are likely to be on the low end of true rates given their 1-2 item assessments.
Limitations aside, this study is the first to explore the 10-year course of meeting attendance, step-work, and AAH and their concurrent influence on long-term outcomes. Psychometrically sound measures employed in Project MATCH were consistently collected at each study interval, with 10-years of month-to-month estimates of drinking outcomes reliably assessed with the Form-90. Other strengths of this study include: a high representation of Hispanic problem drinkers seeking outpatient treatment; an 82% retention rate at 10-years post-treatment; and advanced statistical techniques including multiple imputation that produced robust parameter estimates. The HLM methods employed controlled for all stable measured and unmeasured characteristics of subjects correlated with model covariates (69), thereby eliminating potentially large sources of bias.
Treatment provides a time-limited opportunity during which patients may be receptive to professional input and advice. The significant correlation in our study between worse alcohol outcomes and less interest in others suggests that clients may benefit from increasing other-oriented behaviors as part of their recovery program. The current practice of encouraging meeting attendance could be honed by encouraging service involvement at meetings that do not require extended sobriety time (e.g. helping setup chairs, tables, or coffee). Step-work activity during and following treatment was low; on average, two out of three alcoholics worked no steps during treatment and in the decade following. Formal step-work exercises, a common practice of treatment programs, may require more clinician guidance to increase clients’ understanding of steps worked and their completion. Future studies are warranted to explore the impact of working all 12-steps on behavioral change as well as sequencing of AAH activities in relation to length of time sober.
ACKNOWLEDGEMENTS
We would like to thank Stefan Padfield for his helpful comments regarding this manuscript.The authors acknowledge that the reported results are, in whole or in part, based on analyses of the Project MATCH Public Data Set and 10-year outcomes collected by an outpatient site in Project MATCH.These data were collected as part of a multisite clinical trial of alcoholism treatments, which was supported by a series of grants from NIAAA, and were made available to the authors by the Project MATCH Research Group.This paper was not reviewed or endorsed by the Project MATCH Research Group and does not necessarily represent the opinions of its members, who are not responsible for the contents.
This research was funded in part by a John Templeton Foundation grant awarded to Dr. Pagano, and National Institute on Alcohol Abuse and Alcoholism (NIAAA) grants awarded to Drs. Pagano (K01 AA015137), Stout and Kelly (R21 AA016762), and Tonigan (K02 AA00326).
REFERENCES
1. Humphreys K. Circles of recovery : Self-help organizations for addictions . Cambridge, UK : Cambridge University Press ; 2004 .
2. Kelly J F , Yeterian J . Mutual-help groups. In: O’Donohue W, Cunningham JR, eds. Evidence-based adjunctive treatments . New York : Elsevier ; 2008 : 61 – 106 .
3. White W . Peer-based Addiction Recovery Support : History, Theory, Practice, and Scientific Evaluation . Chicago, IL : Great Lakes Addiction Technology Transfer Center and Philadelphia Department of Behavioral Health and Mental Retardation Services ; 2009 .
4. Emrick C D , Tonigan J S , Montgomery H A , Little L . Alcoholics Anonymous: what is currently known? . In: McCrady B S , Miller W R , eds. Research on Alcoholics Anonymous: Opportunities and alternatives . Piscataway, NJ , Rutgers Center of Alcohol Studies : 1993 : 41 – 76 .
5. Forcehimes A , Tonigan J S . Self-efficacy to remain abstinent and substance abuse: a meta-analysis . Alcoholism Treatment Quarterly. 2008 ; 26 : 48 – 489 .
6. Kelly J , Stout R L , Zywiak W , Schneider R . A 3-year study of addiction mutual-help group participation following intensive outpatient treatment. Alcoholism: Clinical and Experimental Research . 2006 ; 30 : 1381 – 1392 .
7. Moos R H , Moos B S . Participation in treatment and Alcoholics Anonymous: a 16-year follow-up of initially untreated individuals . Journal of Clinical Psychology . 2006 ; 65 : 383 – 391 .
8. Tonigan J S , Toscova R , Miller W R . Meta analysis of the literature on Alcoholics Anonymous: sample and study characteristics with moderate findings . Journal of Studies on Alcohol and Drugs . 1996 ; 57 : 65 – 72 . [PubMed], [Web of Science ®], [CSA]
9. Moos R H. Active ingredients of substance use-focused self-help groups . Addiction. 2008 ; 103 : 387 – 396 . [CrossRef], [PubMed], [Web of Science ®]
10. Morgenstern J , Bux D A , Labouvie E , Morgan T , Blanchard K A , Muench F . Examining mechanisms of action in 12-Step community outpatient treatment . Drug and Alcohol Dependence . 2003 ; 72 : 237 – 247 . [CrossRef], [PubMed], [Web of Science ®]
11. Humphreys K , Mankowski E S , Moos R H , Finney J W . Do enhanced friendship networks and active coping mediate the self-help groups on substance abuse? Annals of Behavioral Medicine . 1999 ; 21 : 54 – 60 . [CrossRef], [PubMed], [Web of Science ®]
12. Morgenstern J , Kahler C W , Frey R M , Labouvie E . Modeling therapeutic response to 12-step treatment: optimal responders, nonresponders, and partial responders . Journal of Substance Abuse . 1996 ; 8 : 45 – 59 . [CrossRef], [PubMed], [CSA]
13. Zemore S E , Kaskutas L A . Helping, spirituality, and Alcoholics Anonymous in recovery . Journal of Studies on Alcohol and Drugs . 2004 ; 65 : 383 – 391 . [PubMed], [Web of Science ®]
14. Tonigan J S , Miller W R . AA practicing subtypes: are there multiple AA fellowships [abstract]? Alcoholism : Clinical and Experimental Research . 2005 ; 29 : 384 .
15. Pagano M E , Friend K B , Tonigan J S , Stout R L . Helping other alcoholics in Alcoholics Anonymous and drinking outcomes: findings from Project MATCH . Journal of Studies on Alcohol and Drugs . 2004 ; 65 : 766 – 773 . [PubMed], [Web of Science ®]
16. Pagano M E , Zemore S E , Onder C C , Stout R L . Predictors of initial AA-related helping: findings from Project MATCH . Journal of Studies on Alcohol and Drugs . 2009 ; 70 : 117 – 125 . [PubMed], [Web of Science ®]
17. Tonigan J S , Rice S L . Is it beneficial to have an alcoholics anonymous sponsor? Psychology of Addictive Behaviors . 2010 ; 24 : 397 – 403 . [CrossRef], [Web of Science ®]
18. Zemore S E. Helping as healing among recovering alcoholics . Southern Medical Journal. 2007 ; 100 : 447 – 450 . [CrossRef], [PubMed], [Web of Science ®]
19. Zemore S E , Kaskutas L E , Ammon L N . In 12-Step groups, helping helps the helper . Addiction. 2004 ; 99 : 1015 – 1023 . [CrossRef], [PubMed], [Web of Science ®]
20. Pagano M E , Krentzman A R , Onder C C , et al. Service to Others in Sobriety (SOS) . Alcoholism Treatment Quarterly. 2010 ; 28 : 111 – 127 . [Taylor & Francis Online], [PubMed]
21. Riessman F. The ‘helper’ therapy principle . Social Work. 1965 ; 10 : 27 – 32 . [Web of Science ®]
22. Jackson S W. The wounded healer . Bulletin of the History of Medicine. 2001 ; 75 : 1 – 36 . [CrossRef], [PubMed], [Web of Science ®]
23. White W . The History of Recovered People as Wounded Healers: from native America to the rise of the modern alcoholism movement . Alcoholism Treatment Quarterly. 2000 ; 18 : 1 – 23 . [Taylor & Francis Online], [CSA]
24. Wilson W . The fellowship of Alcoholics Anonymous . In: Yale University, Laboratory of Applied Physiology, School of Alcohol Studies, ed. Alcohol, Science and Society: Twenty-nine Lectures with Discussions as Given at the Yale Summer School of Alcohol Studies . New Haven, NY : Quarterly Journal of Studies on Alcohol ; 945 : 461 – 473 .
25. Dawkins R. The Selfish Gene . New York City : Oxford University Press ; 1976 .
26. Alcoholics Anonymous . Alcoholics Anonymous: The Story of How More Than One Hundred Men Have Recovered from Alcoholism . New York : Works Publishing Company ; 1939 .
27. White W . Pathways from the Culture of Addiction to the Culture of Recovery: A Travel Guide for Addiction Professionals . 2nd ed. Center City, MN : Hazelden ; 1996 .
28. White W. Pre-AA alcoholic mutual aid societies . Alcoholism Treatment Quarterly. 2001 ; 19 : 1 – 21 . [Taylor & Francis Online], [CSA]
29. Tiebout H M . Alcoholics Anonymous: an experiment of nature . Quarterly Journal of Studies on Alcohol. 1961 ; 22 : 52 – 68 . [PubMed]
30. Reinart D F. Effects of participation in alcohol self-help groups on surrender and narcissism among adult male [doctoral dissertation] . Dissertation Abstracts International. 1992 ; 53 : 3827B . [CSA]
31. Alcoholics Anonymous . Twelve steps and twelve traditions . New York : Alcoholics Anonymous World Services, Inc .; 2002 .
32. Miller W , Kurtz E . Models of alcoholism used in treatment: contrasting AA and other perspectives with which it is often confused . Journal of Studies on Alcohol. 1994 ; 55 : 159 – 166 . [PubMed], [Web of Science ®], [CSA]
33. Kaskutas L A , Bond J , Avalos L A . 7-year trajectories of Alcoholics Anonymous attendance and associations with treatment . Addictive Behaviors. 2009 ; 34 : 1029 – 1035 . [CrossRef], [Web of Science ®]
34. Delucchi K L , Kaskutas L A . Following problem drinkers over eleven years: understanding changes in alcohol consumption . Journal of Studies on Alcohol and Drugs. 2010 ; 71 : 831 – 836 . [Web of Science ®]
35. Gossop M , Stewart D , Marsden J . Attendance at Narcotics Anonymous and Alcoholics Anonymous meetings, frequency of attendance and substance use outcomes after residential treatment for drug dependence: a 5-year follow-up study . Addiction. 2007 ; 103 : 199 – 225 .
36. Moos R H , Moos B S . Help-seeking careers: connections between participation in professional treatment and Alcoholics Anonymous . Journal of Substance Abuse Treatment . 2004 ; 26 : 167 – 173 . [CrossRef], [PubMed], [Web of Science ®]
37. Moos R H , Moos B S . Long-term influence of duration and frequency of participation in Alcoholics Anonymous on individuals with alcohol use disorders . Journal of Consulting and Clinical Psychology . 2004 ; 72 : 81 – 90 . [CrossRef], [PubMed], [Web of Science ®]
38. Moos R H , Moos B S . Paths of entry into Alcoholics Anonymous: consequences for participation and remission. Alcoholism : Clinical and Experimental Research . 2005 ; 29 : 1858 – 1868 . [CrossRef], [PubMed], [Web of Science ®]
39. Moos R H , Moos B S . The interplay between help-seeking and alcohol-related outcomes: divergent processes for professional treatment and self-help groups . Drug and Alcohol Dependence . 2004 ; 75 : 155 – 164 . [CrossRef], [Web of Science ®]
40. Moos R H , Moos B S . Sixteen-year changes and stable remission among treated and untreated individuals with alcohol use disorders . Drug and Alcohol Dependence . 2005 ; 80 : 337 – 347 . [CrossRef], [PubMed], [Web of Science ®]
41. Moos R H , Moos B S . Protective resources and long-term recovery from alcohol use disorders . Drug and Alcohol Dependence. 2007 ; 86 : 46 – 54 . [CrossRef], [PubMed], [Web of Science ®]
42. Moos R H , Moos B S . Gender, treatment and self-help in remission from alcohol use disorders . Clinical Medicine & Research. 2006 ; 3 : 163 – 174 . [CrossRef]
43. Kelly J , Brown S , Abrantes A , Kahler C , Myers M G . Social recovery model: an 8-year investigation of adolescent 12-step group involvement following inpatient treatment . Alcoholism: Clinical and Experimental Research. 2008 ; 32 : 1468 – 1478 . [CrossRef], [PubMed], [Web of Science ®]
44. Ritsher J B , McKeller J D , Finney J W , Otilingam P G , Moos R H . Psychiatric comorbidity, continuing care and mutual help as predictors of five-year remission from substance use disorders . Journal of Studies on Alcohol and Drugs. 2002 ; 63 : 709 – 715 . [PubMed], [Web of Science ®], [CSA]
45. Timko C , DeBennedetti A , Moos B S , Moos R H . Predictors of 16-year mortality among individuals initiating help-seeking for an alcoholic use disorder . Alcoholism: Clinical and Experimental Research . 2006 ; 30 : 1171 – 1720 . [CrossRef]
46. Timko C , Moos R H , Finney J W , Lesar M D . Long-term outcomes of alcohol use disorders: Comparing untreated individuals with those in Alcoholics Anonymous and formal treatment. Journal of Studies on Alcohol and Drugs . 2000 ; 61 : 529 – 540 . [PubMed], [Web of Science ®], [CSA]
47. Vaillant G E. What can long-term follow-up teach us about relapse and prevention of relapse in addiction? . British Journal of Addiction. 1988 ; 83 : 1147 – 1157 . [CrossRef], [PubMed]
48. Vaillant G E. A 60-year follow-up of alcoholic men . Addiction. 2003 ; 98 : 1043 – 1051 . [CrossRef], [PubMed], [Web of Science ®], [CSA]
49. Vaillant G E , Clark W , Cyrus C . et al. Prospective study of alcoholism treatment: eight-year follow-up . American Journal of Medicine. 1983 ; 75 : 455 – 463 . [CrossRef], [PubMed], [Web of Science ®]
50. Turnbull L . Narcissism and the potential for self-transformation in the Twelve Steps . Health. 1997 ; 1 : 149 – 165 . [CSA]
51. Reinert D F , Allen J P , Fenzel L M , Estadt , B K . Alcohol recovery in self-help groups: surrender and narcissism . Journal of Religion and Health. 1993 ; 32 : 299 – 308 . [CrossRef], [Web of Science ®]
52. Reinert D F , Estadt B K , Fenzel L M , Allen J P , Gilroy F D . Relationship of surrender and narcissim to involvement in alcohol recovery . Alcoholism Treatment Quarterly. 1995 ; 12 : 49 – 58 . [Taylor & Francis Online]
53. Longabaugh R , Wirtz P . Project MATCH hypotheses: results on causal change analyses . Bethesda, MD : National Institute on Alcohol Abuse and Alcoholism ; 2001 .
54. Project MATCH Research Group. Matching alcoholism treatments to client heterogeneity: Project MATCH posttreatment drinking outcomes . Journal of Studies on Alcohol and Drugs. 1997 ; 58 : 7 – 29 . [PubMed], [Web of Science ®], [CSA]
55. Project MATCH Research Group. Matching alcoholism treatments to client heterogeneity: Project MATCH three year drinking outcomes. Alcoholism : Clinical and Experimental Research . 1998 ; 22 : 1300 – 1311 . [CrossRef], [PubMed], [Web of Science ®]
56. Del Boca F K , Mattson M E , Fuller R , Babor T F . Planning a multisite matching trial: organization structure and research design , in: Babor T F , Boca F K D , eds. Treating matching in alcoholism . New York : Cambridge University Press ; 2003 : 15 – 28 .
57. Project MATCH Research Group. Project MATCH: Rationale and methods for a multisite clinical trial matching patients to alcoholism treatment . Alcoholism: Clinical and Experimental Research . 1993 ; 17 : 1130 – 1145 . [CrossRef], [PubMed], [Web of Science ®]
58. Miller W R , Zweben A , DiClemente C C , Rychtarik R G . Motivational enhancement therapy manual: a clinical research guide for therapists treating individuals with alcohol abuse and dependence . Rockville, MD : National Institute on Alcohol Abuse and Alcoholism ; 1992 .
59. Miller W R . Form 90: a structured assessment interview of drinking and related behaviors . Washington, DC : Government Printing Office ; 1996 .
60. Tonigan J S , Miller W R , Brown J M. The reliability of Form 90: an instrument for assessing alcohol treatment outcome . Journal of Studies on Alcohol and Drugs . 1997 ; 58 : 358 – 364 . [PubMed], [Web of Science ®], [CSA]
61. Westerberg V S , Tonigan J S , Miller W R . Reliability of Form 90D: an instrument for quantifying drug use . Substance Abuse: Research and Treatment . 1998 ; 19 : 179 – 189 . [Taylor & Francis Online], [PubMed]
62. Tonigan J S , Connors G J , Miller W R . The Alcoholics Anonymous Involvement (AAI) scale: reliability and norms . Psychology of Addictive Behaviors . 1996 ; 10 : 75 – 80 . [CrossRef], [Web of Science ®], [CSA]
63. Cohen J. Statistical power analysis for the behavioral sciences . Mawah, NJ : Lawrence Erlbaum ; 1988 .
64. Beck A T , Ward C H , Mendelson M , Mock J , Erbaugh J . An inventory for measuring depression . Archives of General Psychiatry . 1961 ; 4 : 561 – 571 . [CrossRef], [PubMed], [Web of Science ®]
65. Alcoholics Anonymous . Alcoholics Anonymous: The Story of how Many Thousands of Men and Women have Recovered from Alcoholism. 4th ed . New York : Alcoholics Anonymous World Services, Inc .; 2001 .
66. Pagano M E , Phillips K A , Stout R L , Menard W , Piliavin J A . The impact of helping behaviors on the course of substance use disorders in individuals with body dysmorphic disorder . Journal of Studies on Alcohol and Drugs . 2007 ; 68 : 291 – 295 . [PubMed], [Web of Science ®]
67. Pagano M E , Murphy J M , Pedersen M . et al. Screening for psychosocial problems in 4-5 year olds during routine EPSDT examinations; validity and reliability in a Mexican-American sample . Clinical Pediatrics. 1996 ; 35 : 139 – 146 . [CrossRef], [Web of Science ®], [CSA]
68. Aiken L S , West S G . Multiple Regression: Testing and interpreting interactions . Newbury Park, CA : Sage ; 1991 .
69. Allison P . Logistic regression using SAS: theory and application . Cary, NC : SAS Institute ; 1999 .
70. Pedhazur E J. Multiple regression in behavioral research: Explanation and prediction . Fort Worth, TX: Harcourt Brace College Publishers ; 1997 : 207
71. Gilks W R , Richardson S , Speigelhalter D J . Markov Chain Monte Carlo in practice: interdisciplinary statistics . London : Chapman and Hall ; 1996 .
72. Little R J A , Rubin D B . Statistical analysis with missing data . Hoboken, NJ : Wiley & Sons ; 2002 .
73. Kelly J , Stout R , Tonigan J S , Magill M , Pagano M E . Negative affect, relapse, and Alcoholics Anonymous: does AA work by reducing anger? Journal of Studies on Alcohol and Drugs . 2010 ; 71 : 434 – 444 . [Web of Science ®]
74. Barnard J , Rubin D B . Small-sample degrees of freedom with multiple imputation . Biometrika. 1999 ; 86 : 948 – 955 . [CrossRef], [Web of Science ®]
75. Babor T F , Del Boca F K . Treatment matching in alcoholism . Cambridge, UK : Cambridge University Press ; 2003 .
76. Timko C , Moos R H , Finney J W , Connell E G . Gender differences in help-utilization and the 8-year course of alcohol abuse . Addiction. 2002 ; 97 : 887 – 889 . [CrossRef]
77. Blonigen D M , Timko C , Moos B S , Moos R H . Treatment, Alcoholics Anonymous, and 16-year changes in impulsivity and legal problems among men and women with alcohol use disorders . Journal of Studies on Alcohol and Drugs . 2009 ; 70 : 714 . [Web of Science ®]
78. Caldwell P E . Fostering client connections with Alcoholics Anonymous: A framework for social workers in various practice settings . Social Work Health Care. 1999 ; 28 : 45 – 61 . [Taylor & Francis Online], [PubMed], [Web of Science ®], [CSA]
79. Alcoholics Anonymous . Bridging the gap between treatment and A.A. through temporary contact programs . New York : Alcoholics Anonymous World Services, Inc .; 1991 .
80. Zweben A , Rose S J , Stout R L , Zywiak W H . Case monitoring and motivational style brief interventions . In: Hester R K , Miller W R , eds. Handbook of Alcoholism Treatment Approaches: Effective Alternatives. 3rd ed . Boston, MA : Allyn & Bacon ; 2003 : 113 – 130 .