NCT03278756

Brief Summary

This study evaluates the effectiveness of an internet-delivered cognitive control training as a preventive intervention for remitted depressed patients. Half of the participants will receive a cognitive control training, while the other half will receive a low cognitive load training that acts as an active control condition.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
68

participants targeted

Target at P50-P75 for not_applicable

Timeline
Completed

Started Sep 2017

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

First Submitted

Initial submission to the registry

August 18, 2017

Completed
14 days until next milestone

Study Start

First participant enrolled

September 1, 2017

Completed
11 days until next milestone

First Posted

Study publicly available on registry

September 12, 2017

Completed
1.5 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

March 13, 2019

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

March 13, 2019

Completed
Last Updated

November 9, 2022

Status Verified

November 1, 2022

Enrollment Period

1.5 years

First QC Date

August 18, 2017

Last Update Submit

November 8, 2022

Conditions

Keywords

DepressionRemissionRelapse preventionCognitive control trainingInternet intervention

Outcome Measures

Primary Outcomes (3)

  • Change in depressive symptomatology

    Measured by the Beck Depression Inventory - II (BDI-II)

    Assessed at pre-training assessment and at 6 months follow-up

  • Change in depressive symptomatology

    Measured by the Depression Anxiety Stress Scales (DASS)

    Assessed at pre-training assessment, at post-training assessment (within 1 week of completing the training), at 3 months follow-up and at 6 months follow-up

  • Change in depressive rumination (brooding)

    Measured by the Ruminative Response Scale (RRS), especially the brooding subscale

    Assessed at pre- and post-training assessment (within 1 week of completing the training) and at 3 and 6 months follow-up

Secondary Outcomes (4)

  • Change in cognitive emotion regulation strategies

    Assessed at pre- and post-training assessment (within 1 week of completing the training) and at 3 and 6 months follow-up

  • Change in quality of life

    Assessed at pre- and post-training assessment (within 1 week of completing the training) and at 3 and 6 months follow-up

  • Remission from depression

    Assessed at pre- and post-training assessment (within 1 week of completing the training) and at 3 and 6 months follow-up

  • Resilience

    Assessed at pre- and post-training assessment (within 1 week of completing the training) and at 3 and 6 months follow-up

Other Outcomes (5)

  • User engagement

    Assessed at post-training assessment (within 1 week of completing the training) and at 3 months follow-up

  • Threatening experiences

    Assessed at pre- and post-training assessment (within 1 week of completing the training) and at 3 and 6 months follow-up

  • Effortful control

    Assessed at pre-training assessment and at 6 months follow-up

  • +2 more other outcomes

Study Arms (2)

Cognitive Control Training

EXPERIMENTAL

A cognitive control training, consisting of 10 sessions of 15 minutes each, will be administered. The task in this training is an adaptive paced auditory serial addition task, where participants need to click on the sum of the last two heard digits.

Behavioral: Cognitive control training

Active Control Training

ACTIVE COMPARATOR

An active control training, consisting of 10 sessions of 15 minutes each, will be administered. The task in this training is an adaptive low load cognitive task, where participants need to click on the last heard digit.

Behavioral: Active control training

Interventions

10 sessions of an adaptive paced auditory serial addition task, each lasting 15 minutes, over the course of two weeks.

Cognitive Control Training

10 sessions of an low cognitive load task, each lasting 15 minutes, over the course of two weeks.

Active Control Training

Eligibility Criteria

Age18 Years - 65 Years
Sexall
Healthy VolunteersYes
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • History of ≥ 1 depressive episodes (major or bipolar)
  • Currently in stable full or partial remission (≥ 3 months)

You may not qualify if:

  • Major depressive disorder (current or less than 3 months in remission)
  • Bipolar disorder (current or less than 3 months in remission)
  • Psychotic disorder (current and/or previous)
  • Neurological impairments (current and/or previous)
  • Excessive substance abuse (current and/or previous)
  • No ongoing psychotherapeutic treatment (maintenance treatment is allowed, but with a frequency of less than once every three weeks)
  • Use of antidepressant medication is allowed if kept at a constant level

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Ghent University

Ghent, Oost-Vlaanderen, 9000, Belgium

Location

MeSH Terms

Conditions

Depression

Condition Hierarchy (Ancestors)

Behavioral SymptomsBehavior

Study Officials

  • Ernst HW Koster, PhD

    University Ghent

    PRINCIPAL INVESTIGATOR

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
QUADRUPLE
Who Masked
PARTICIPANT, CARE PROVIDER, INVESTIGATOR, OUTCOMES ASSESSOR
Purpose
PREVENTION
Intervention Model
PARALLEL
Model Details: Between subjects-design with two training conditions. The training condition is the only difference between the two groups during the study.
Sponsor Type
OTHER
Responsible Party
SPONSOR

Study Record Dates

First Submitted

August 18, 2017

First Posted

September 12, 2017

Study Start

September 1, 2017

Primary Completion

March 13, 2019

Study Completion

March 13, 2019

Last Updated

November 9, 2022

Record last verified: 2022-11

Locations