1. Outcomes of Acceptance and Commitment Therapy for depression and predictors of treatment response in Veterans Health Administration patients.
- Author
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Grau PP, Sripada RK, Ganoczy D, Weinstein JH, and Pfeiffer PN
- Subjects
- Humans, Depression therapy, Veterans Health, Treatment Outcome, Acceptance and Commitment Therapy, Veterans psychology, Stress Disorders, Post-Traumatic therapy, Stress Disorders, Post-Traumatic complications
- Abstract
Background: Acceptance and Commitment Therapy for depression (ACT-D) is a promising depression treatment which has not been evaluated on a large scale within VA. This study aimed to evaluate ACT-D's effectiveness in a national, treatment-seeking sample of Veterans., Methods: The sample comprised 831 Veterans who received a primary depression diagnosis and received at least two sessions of ACT-D during fiscal years 2015-2020. We used GLM to measure predictors of symptom change, treatment response (50 % reduction in PHQ-9 and AAQ-II scores), subthreshold depression symptoms (PHQ-9 < 10; AAQ-II < 27), and treatment completion., Results: Veterans experienced an average reduction of 3.39 points on the PHQ-9 (Cohen's d = 0.56) and 3.76 points on the AAQ-II (Cohen's d = 0.43). On the PHQ-9, 40 % achieved subthreshold depression symptoms. On the AAQ-II, 36 % of Veterans achieved subthreshold psychological inflexibility scores. Service-connected disability rating for depression and higher levels of medical comorbidity were both related to lower levels of overall depression symptom change and treatment response. Substance use disorder and bipolar/psychosis diagnoses were associated with greater reductions in psychological inflexibility., Limitations: This is an observational study without a control group, so we were unable to compare the effectiveness of ACT-D to other usual care for depression. We were also unable to assess variables that can influence treatment success, such as therapist fidelity and patient engagement., Conclusions: ACT-D achieved similar improvements in depression as reported in controlled trials. Adaptations to ACT-D may be needed to improve outcomes for Veterans with depression and comorbid PTSD., Competing Interests: Conflict of interest The authors declare no relevant competing interests., (Published by Elsevier B.V.)
- Published
- 2023
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