Disorder-specific psychotherapy for persistent depression: evaluation of Cognitive Behavioral Analysis System of Psychotherapy (CBASP) in group setting

Potijk, MR, aan het Rot, M, Parlevliet, FM, Schoevers, RA, Eldering, MJ

 

Submission type

Oral only

Scheduled

Poster, Beurs van Berlage , Grote Zaal

Kernwoorden

chronic depression CBASP late onset-patients

Onderzoeksgebied

Anxiety and depression

Introductie

Cognitive Behavioral Analysis System of Psychotherapy (CBASP) has shown to be an effective disorder-specific treatment for persistent depressive disorder. However, evidence for effectiveness of group treatment (Group-CBASP) is limited. Therefore, our aim was to evaluate the efficacy of Group-CBASP. Based on literature, we examined age of depression-onset as a potential moderator.

Materiaal en methodes

We conducted a retrospective study (November 2011-March 2017) evaluating treatment efficacy in 54 patients (29 late-onset, 25 early-onset). All patients were previously treated for depression but did not achieve long-term recovery. Group-CBASP involved 24 weekly group sessions and was followed by 6 months of individual CBASP. We evaluated outcomes on the Inventory of Depressive Symptoms – Self-Report (IDS-SR) at baseline and after 3, 6, and 12 months.

Resultaten

Mean IDS-SR scores decreased from 39.83 (SD 9.42) to 33.78 (SD 14.61; t = 3.62, p =.001) after 24 group sessions. Effect size was nearly medium (Cohen’s d=0.49). The late-onset group showed a larger effect size (d=0.62) than the early-onset group (d=0.36).

Conclusie

Severity of depressive symptoms declined from severe to moderate after completion of Group-CBASP, with effect sizes comparable to individual CBASP. In contrast to our expectations, late-onset was correlated with better treatment response, which may be explained by higher rates of comorbidity and single family status in early-onset patients.

Auteurs