Relative and Interactive Associations of Psychosocial Intervention and Alcoholics Anonymous Attendance With Alcohol Use Disorder Outcomes.

Psychosocial intervention and Alcoholics Anonymous (AA)/mutual help organization attendance are both associated with alcohol use disorder (AUD) outcomes. However, no research has explored the relative or interactive associations of psychosocial intervention and AA attendance with AUD outcomes. This was a secondary analysis of data from the Project MATCH (Matching Alcoholism Treatments to Client Heterogeneity) outpatient arm participants ( When accounting for AA attendance and other variables, attending more psychosocial intervention sessions was consistently associated with fewer drinking days and heavy drinking days after intervention. AA attendance was consistently associated with a lower percentage of drinking days at 1 and 3 years after intervention, when accounting for psychosocial intervention attendance and other variables. Analyses failed to identify an interaction between psychosocial intervention attendance and AA attendance with AUD outcomes. Psychosocial intervention and AA attendance are robustly associated with better AUD outcomes. Replication studies comprising samples of individuals who attend AA more than once per week are needed to further test the interactive association of psychosocial intervention attendance and AA attendance with AUD outcomes.