A comparative, process-effectiveness evaluation of VA substance abuse treatment

Over 3,000 patients from 15 VA inpatient, substance abuse treatment programs showed considerable improvement from intake to a one-year follow-up. Patients in 12-step programs, as opposed to cognitive-behavioral (CB) or eclectic programs, and those with more extended continuing outpatient mental health care and 12-step self-help group involvement, were more likely to be abstinent and free of substance use problems at follow-up. Consistent with their better one-year outcomes, patients in 12-step programs improved more between intake and discharge than CB patients on proximal outcomes assumed to be specific to 12-step treatment (e.g., disease model beliefs) and as much or more on CB proximal outcomes. Proximal outcomes assessed at treatment discharge and follow-up were, at best, modestly related to one-year substance use and other outcomes. No evidence was found that CB or 12-step treatment is more beneficial for certain types of patients.