Do client attributes moderate the effectiveness of a group cognitive behavioral therapy for depression in addiction treatment?

摘要

The study goal was to determine whether client attributes were associated with outcomes from group cognitive behavioral therapy for depression (GCBT-D) as delivered in community-based addiction treatment settings. Data from 299 depressed residential clients assigned to receive either usual care (N=159) or usual care plus GCBT-D (N=140) were examined. Potential moderators included gender, race/ethnicity, education, referral status, and problem substance use. Study outcomes at six months post-baseline included changes in depressive symptoms, mental health functioning, negative consequences from substance use and percentage of days abstinent. Initial examination indicated that non-Hispanic Whites had significantly better outcomes than other racial/ethnic groups on two of the four outcomes. After correcting for multiple testing, none of the examined client attributes moderated the treatment effect. GCBT-D appears effective, however the magnitude and consistency of treatment effects indicate that it may be less helpful among members of racial/ethnic minority groups and is worthy of future study.