AI Article Synopsis
- Time-limited psychotherapy for depression, specifically cognitive-behavioral therapy (CBT) and short-term psychodynamic supportive psychotherapy (SPSP), shows effectiveness but is negatively impacted by comorbid personality disorders.
- This study analyzed data from a clinical trial involving 196 patients to compare the effectiveness of CBT and SPSP on depression outcomes, focusing on how the presence of personality disorders affected results.
- While both treatments improved depressive symptoms and interpersonal problems, individuals with comorbid personality disorders exhibited poorer depression outcomes initially and at follow-up, although no significant differences were found in social functioning or quality of life across treatment modalities.
Article Abstract
Background: Time-limited psychotherapy for depression is effective. However, comorbid personality disorders affect therapy outcomes negatively. Studies of follow-up effects and results relating to the influence of comorbid personality disorder and treatment modality are scarce.
Aims: To determine the influence of comorbid personality disorder and treatment modality on outcomes after cognitive-behavioural therapy (CBT) or short-term psychodynamic supportive psychotherapy (SPSP) for depression.
Method: This study draws on data from a previously published randomised clinical trial contrasting SPSP and CBT for depression (both 16 sessions). We compared the effectiveness of these psychotherapies for patients with and without personality disorder (n = 196). The primary measure was depression outcome; the secondary measurements were interpersonal functioning and quality of life. Collected data were analysed using multilevel analysis. Trial registration: ISRCTN31263312 (http://www.controlled-trials.com).
Results: Although participants with and without comorbid personality disorder improved at treatment termination (d = 1.04, 95% CI 0.77-1.31 and d = 1.36, 95% CI 0.97-1.76, respectively) and at follow-up (d = 1.15, 95% CI 0.87-1.43 and d = 2.12, 95% CI 1.65-2.59 respectively), personality disorder had a negative effect on depression outcome at both measurement points (P < 0.05). A similar negative effect on interpersonal functioning was no longer apparent at follow-up. Comorbid personality disorder had no influence on social functioning or quality of life outcomes, irrespective of treatment modality.
Conclusions: CBT and SPSP contribute to the improvement of depressive symptoms and interpersonal problems in depressed patients with and without comorbid personality disorder. Both treatments are an effective first step in a stepped care approach, but - given remaining levels of depression in patients with personality disorder - they are probably inadequate for large numbers of patients with this comorbidity.
Declaration Of Interest: None.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6646965 | PMC |
| http://dx.doi.org/10.1192/bjo.2019.47 | DOI Listing |
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