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Published in: BMC Psychiatry 1/2016

Open Access 01-12-2016 | Study protocol

Investigating the (cost-) effectiveness of attention bias modification (ABM) for outpatients with major depressive disorder (MDD): a randomized controlled trial protocol

Authors: Gina R. A. Ferrari, Eni S. Becker, Filip Smit, Mike Rinck, Jan Spijker

Published in: BMC Psychiatry | Issue 1/2016

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Abstract

Background

Despite the range of available, evidence-based treatment options for Major Depressive Disorder (MDD), the rather low response and remission rates suggest that treatment is not optimal, yet. Computerized attention bias modification (ABM) trainings may have the potential to be provided as cost-effective intervention as adjunct to usual care (UC), by speeding up recovery and bringing more patients into remission. Research suggests, that a selective attention for negative information contributes to development and maintenance of depression and that reducing this negative bias might be of therapeutic value. Previous ABM studies in depression, however, have been limited by small sample sizes, lack of long-term follow-up measures or focus on sub-clinical samples. This study aims at evaluating the long-term (cost-) effectiveness of internet-based ABM, as add-on treatment to UC in adult outpatients with MDD, in a specialized mental health care setting.

Methods/design

This study presents a double-blind randomized controlled trial in two parallel groups with follow-ups at 1, 6, and 12 months, combined with an economic evaluation. One hundred twenty six patients, diagnosed with MDD, who are registered for specialized outpatient services at a mental health care organization in the Netherlands, are randomized into either a positive training (towards positive and away from negative stimuli) or a sham training, as control condition (continuous attentional bias assessment). Patients complete eight training sessions (seven at home) during a period of two weeks (four weekly sessions). Primary outcome measures are change in attentional bias (pre- to post-test), mood response to stress (at post-test) and long-term effects on depressive symptoms (up to 1-year follow-up). Secondary outcome measures include rumination, resilience, positive and negative affect, and transfer to other cognitive measures (i.e., attentional bias for verbal stimuli, cognitive control, positive mental imagery), as well as quality of life and costs.

Discussion

This is the first study investigating the long-term effects of ABM in adult outpatients with MDD, alongside an economic evaluation. Next to exploring the mechanism underlying ABM effects, this study provides first insight into the effects of combining ABM and UC and the potential implementation of ABM in clinical practice.

Trial registration

Trialregister.nl, NTR5285. Registered 20 July 2015.
Footnotes
1
The DSM-IV-TR is still used for diagnostic purposes at mental health care institutions in the Netherlands until 2017. Therefore, the inclusion criteria in this study are still based on this former DSM version, instead of on the DSM-V. As the main criterion symptoms applied to the diagnosis of a major depressive episode and the requisite that these symptoms have to be present for at least two weeks do not differ between the two versions of the DSM [87], relying on the DSM-IV-TR for inclusion is not considered problematic.
 
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Metadata
Title
Investigating the (cost-) effectiveness of attention bias modification (ABM) for outpatients with major depressive disorder (MDD): a randomized controlled trial protocol
Authors
Gina R. A. Ferrari
Eni S. Becker
Filip Smit
Mike Rinck
Jan Spijker
Publication date
01-12-2016
Publisher
BioMed Central
Published in
BMC Psychiatry / Issue 1/2016
Electronic ISSN: 1471-244X
DOI
https://doi.org/10.1186/s12888-016-1085-1

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