Distress and anhedonia as predictors of depression treatment outcome: A secondary analysis of a randomized clinical trial. (February 2020)

• Record Type: Journal Article
• Authors: Khazanov, Gabriela K.; Xu, Colin; Dunn, Barnaby D.; Cohen, Zachary D.; DeRubeis, Robert J.; Hollon, Steven D.
• Is Part Of: Behaviour research and therapy. Volume 125(2020)
• Publication Date: 2020-02
• Subjects: Distress -- Anhedonia -- MASQ -- Depression -- Treatment outcome; Cognitive therapy -- Periodicals; Psychotherapy -- Periodicals; 616.891
• DOI: 10.1016/j.brat.2019.103507
• Languages: English
• ISSNs: 0005-7967

Abstract

Abstract: Two core features of depression include depressed mood (heightened distress) and anhedonia (reduced pleasure). Despite their centrality to depression, studies have not examined their contribution to treatment outcomes in a randomized clinical trial providing mainstream treatments like antidepressant medications (ADM) and cognitive therapy (CT). We used baseline distress and anhedonia derived from a factor analysis of the Mood and Anxiety Symptom Questionnaire to predict remission and recovery in 433 individuals with recurrent/chronic major depressive disorder. Patients were provided with only ADM or both ADM and CT. Overall, higher baseline distress and anhedonia predicted longer times to remission within one year and recovery within three years. When controlling for treatment condition, distress improved prediction of outcomes over and above anhedonia, while anhedonia did not improve prediction of outcomes over and above distress. Interactions with treatment condition demonstrated that individuals with higher distress and anhedonia benefited from receiving CT in addition to ADM, whereas there was no added benefit of CT for individuals with lower distress and anhedonia. Assessing distress and anhedonia prior to treatment may help select patients who will benefit most from CT in addition to ADM. For the treatments and outcome measures tested, utilizing distress to guide treatment planning may yield the greatest benefit. Trial registration: clinicaltrials.gov Identifier: NCT00057577. Highlights: Elevated distress and anhedonia predicted treatment outcomes in depressed persons. Elevations predicted longer times to remission and recovery for up to 3 years. Elevations predicted greater benefit from cognitive therapy in addition to medications. Distress improved predictions of outcomes over and above anhedonia. Anhedonia did not improve predictions of outcomes over and above distress.