Alcoholics Anonymous and other 12-step programs for alcohol use disorder.
Level 1 - systematic review of randomized trials
Systematic review and meta-analysis of randomized controlled trials and non-randomized studies
PubMed 32159228 · doi:10.1002/14651858.CD012880.pub2
What was done
This Cochrane systematic review searched literature up to August 2019 across multiple databases (CENTRAL, PubMed, Embase, CINAHL, PsycINFO, and trial registries) for randomized controlled trials (RCTs), quasi-RCTs, and non-randomized studies evaluating Alcoholics Anonymous (AA) or Twelve-Step Facilitation (TSF) interventions in non-coerced adults with alcohol use disorder (AUD). Studies comparing AA/TSF to alternative clinical interventions (such as cognitive behavioral therapy [CBT] or motivational enhancement therapy [MET]), variant TSF programs, or no treatment were synthesized via random-effects meta-analyses.
What was found
The review analyzed 27 studies (21 RCTs/quasi-RCTs, 5 non-randomized, 1 economic) totaling 10,565 participants. For manualized AA/TSF versus other clinical treatments: - Continuous abstinence was higher with AA/TSF at 12 months (RR 1.21, 95% CI 1.03 to 1.42; 2 RCTs, n = 1,936; high-certainty evidence), remaining consistent at 24 and 36 months. - Percent days abstinent (PDA) showed no clear difference at 12 months (MD 3.03%, 95% CI -4.36 to 10.43; 4 RCTs, n = 1,999; very low certainty), but favored AA/TSF at 24 months (MD 12.91%, 95% CI 7.55 to 18.29; 2 RCTs, n = 302; low certainty) and 36 months (MD 6.64%, 95% CI 1.54 to 11.75; 1 RCT, n = 806; low certainty). - Longest period of abstinence at 6 months showed no significant difference (MD 0.60 months, 95% CI -0.30 to 1.50; 2 RCTs, n = 136; low certainty). - Drinks per drinking day at 12 months showed no significant difference (MD -0.17, 95% CI -1.11 to 0.77; 1 RCT, n = 1,516; moderate certainty), nor did percent days heavy drinking (MD -5.51%, 95% CI -14.15 to 3.13; 1 RCT, n = 91; low certainty). - Alcohol-related consequences at 12 months did not significantly differ (MD -2.88, 95% CI -6.81 to 1.04; 3 RCTs, n = 1,762; moderate certainty).
Why it matters
This review demonstrates that manualized 12-step facilitation interventions perform as well as or better than standard psychotherapy modalities like CBT for sustained abstinence in AUD, establishing rigorous empirical support for AA-based approaches.
Limits
Selection bias was high in 11 of 27 studies, and attrition bias was high in 9 studies (chiefly due to attrition rates exceeding 20%). Researcher blinding was unclear in 22 studies. Multiple secondary outcomes and non-manualized comparisons relied on single, small trials resulting in low or very low certainty ratings.