Differential responses to psychotherapy versus pharmacotherapy in patients with chronic forms of major depression and childhood trauma

TLDR

Major depressive disorder causes significant morbidity, disability, and suicide risk, yet predictors of treatment response remain poorly understood. The study randomized 681 patients with chronic major depression to nefazodone, CBASP psychotherapy, or their combination. Results showed that antidepressant and psychotherapy monotherapies were equally ineffective compared to combination therapy, and among patients with early childhood trauma, psychotherapy alone outperformed antidepressant alone while combination offered only marginal additional benefit, indicating psychotherapy is crucial for this subgroup.

Abstract

Major depressive disorder is associated with considerable morbidity, disability, and risk for suicide. Treatments for depression most commonly include antidepressants, psychotherapy, or the combination. Little is known about predictors of treatment response for depression. In this study, 681 patients with chronic forms of major depression were treated with an antidepressant (nefazodone), Cognitive Behavioral Analysis System of Psychotherapy (CBASP), or the combination. Overall, the effects of the antidepressant alone and psychotherapy alone were equal and significantly less effective than combination treatment. Among those with a history of early childhood trauma (loss of parents at an early age, physical or sexual abuse, or neglect), psychotherapy alone was superior to antidepressant monotherapy. Moreover, the combination of psychotherapy and pharmacotherapy was only marginally superior to psychotherapy alone among the childhood abuse cohort. Our results suggest that psychotherapy may be an essential element in the treatment of patients with chronic forms of major depression and a history of childhood trauma.