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Published in: BMC Psychiatry 1/2019

Open Access 01-12-2019 | Affective Disorder | Research article

Cognitive behavioral treatment for depressed adolescents: results from a cluster randomized controlled trial of a group course

Authors: Thormod Idsoe, Serap Keles, Asgeir Røyrhus Olseth, Terje Ogden

Published in: BMC Psychiatry | Issue 1/2019

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Abstract

Background

The group-based CBT intervention, the Adolescent Coping with Depression Course (ACDC), has previously been evaluated within a quasi-experimental design, showing reduction in depressive symptoms compared to a benchmark of similar studies. The aim of our study was to investigate the effectiveness of ACDC within a randomized controlled (RCT) design.

Method

Thirty-five course/control leaders randomly assigned to provide ACDC or usual care (UC) recruited 133 adolescents allocated to ACDC and 95 to UC. ACDC participants received eight weekly sessions and two follow-up sessions about 3 and 6 weeks after the last session. UC participants received usual care as implemented at the different sites. Depressive symptoms were measured with the Center for Epidemiologic Studies Depression Scale for adolescents (CES-D), perfectionism with the revised version of the Dysfunctional Attitude Scale (DAS), and rumination with the revised version of the Ruminative Responses Scale (RRS). Attrition was considered missing at random (MAR) and handled with a full information maximum likelihood (FIML) procedure.

Results

Intention to treat analysis (ITT), including baseline scores and predictors of missing data as control or auxiliary variables, showed a small to medium reduction in depressive symptoms for the ACDC group compared to UC (d = −.31). Changes in perfectionism and rumination in favor of the intervention were also significant. Sensitivity analyses confirmed the findings from the ITT analyses.

Conclusions

The current study supports the effectiveness of this group-based CBT intervention. The intervention can hopefully result in clinically significant reductions in symptoms associated with depression among adolescents.

Trial registration

ISRCTN registry ISRCTN19700389. Registered 6 October 2015.
Appendix
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Metadata
Title
Cognitive behavioral treatment for depressed adolescents: results from a cluster randomized controlled trial of a group course
Authors
Thormod Idsoe
Serap Keles
Asgeir Røyrhus Olseth
Terje Ogden
Publication date
01-12-2019
Publisher
BioMed Central
Published in
BMC Psychiatry / Issue 1/2019
Electronic ISSN: 1471-244X
DOI
https://doi.org/10.1186/s12888-019-2134-3

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