NCT05700539

Brief Summary

Attention deficit hyperactivity disorder (ADHD) is a disorder characterized by lack of attention, hyperactivity, and impulsivity. It can have major impact on everyday life and result in negative consequences for one's personal, academic, and work situation. For individuals with symptoms of ADHD, increased levels of anxiety and depression are common, and an overall reduction of quality of life is often present. This study protocol describes a clinical trial of internet-based cognitive behavioral therapy (iCBT), using a randomized controlled study design, with the primary aim to increase quality of life, as well as to reduce symptoms of ADHD, anxiety, depression, and stress. A second aim is to investigate, by qualitative means, what aspects of treatment were perceived as helpful and hindering when it comes to completing iCBT. Two hundred participants with symptoms of ADHD will be included and randomized to two conditions (treatment and wait-list control). The treatment period is comprised of ten weeks, with two mandatory modules and ten modules from which the participants can choose freely. Self-report measures are completed by the participants at baseline and end of treatment, as well as at a six-month follow-up. The treatment is guided by therapists and consists of weekly correspondence with the participants. The study will utilize an intention to treat design, with ANOVAs and Reliable Change Index to evaluate treatment effects. The qualitative part of the project will be interview-based and employ thematic analysis. Lastly, a psychometric evaluation of a common instrument for determining ADHD-symptoms will also be made. The results will hopefully contribute to the evidence base for iCBT for individuals with symptoms of ADHD and help disseminate potentially effective interventions.

Trial Health

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Monitor

Trial Health Score

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

Trial has exceeded expected completion date
Enrollment
200

participants targeted

Target at P75+ for not_applicable

Timeline
Completed

Started Jan 2023

Typical duration for not_applicable

Geographic Reach
1 country

1 active site

Status
recruiting

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

December 21, 2022

Completed
1 month until next milestone

Study Start

First participant enrolled

January 25, 2023

Completed
1 day until next milestone

First Posted

Study publicly available on registry

January 26, 2023

Completed
2.8 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

November 1, 2025

Completed
2 months until next milestone

Study Completion

Last participant's last visit for all outcomes

December 31, 2025

Completed
Last Updated

September 2, 2025

Status Verified

August 1, 2025

Enrollment Period

2.8 years

First QC Date

December 21, 2022

Last Update Submit

August 25, 2025

Conditions

Outcome Measures

Primary Outcomes (4)

  • Adult Attention-deficit/hyperactivity disorder Quality-of-Life scale (AAQoL)

    The AAQoL (Brod et al., 2015; Brod, Johnston, Able, \& Swindle, 2006) is a disease-specific quality of life measure for adults with ADHD. The instrument measures quality of life-consequences of ADHD in four domains using and consists of 29 items. The instrument has excellent internal consistency (Cronbach's α = .93 for the overall measure). One example of an item is "In the last two weeks, how hard has it been for you to remember important things?", scored on a five-point Likert-like scale from "Not at all/Never" (1) to "Extremely/Very Often" (5). The scale ranges from 0 to 145.

    Change in quality of life from baseline to 10 week (i.e., post-treatment)

  • Adult Attention-deficit/hyperactivity disorder Quality-of-Life scale (AAQoL)

    The AAQoL (Brod et al., 2015; Brod, Johnston, Able, \& Swindle, 2006) is a disease-specific quality of life measure for adults with ADHD. The instrument measures quality of life-consequences of ADHD in four domains using and consists of 29 items. The instrument has excellent internal consistency (Cronbach's α = .93 for the overall measure). One example of an item is "In the last two weeks, how hard has it been for you to remember important things?", scored on a five-point Likert-like scale from "Not at all/Never" (1) to "Extremely/Very Often" (5). The scale ranges from 0 to 145.

    Change in quality of life from baseline six-month follow-up

  • Adult ADHD Self-Report Scale-V1.1 (ASRS-V1.1) Symptoms Checklist (ASRS)

    The ASRS is an instrument that measures ADHD-symptoms (Kessler et al., 2005). The instrument consists of 18 items that correspond to the 18 symptom-criteria for ADHD found in the DSM-IV-TR (Association, 2000). Of these 18 questions, six have been identified as most predictive of ADHD-symptoms. The overall range of the entire measure is 0 to 72. However, there are separate items focusing on attention and hyperactivity.

    Change in ADHD symptoms from baseline to 10 week (i.e., post-treatment)

  • Adult ADHD Self-Report Scale-V1.1 (ASRS-V1.1) Symptoms Checklist (ASRS)

    The ASRS is an instrument that measures ADHD-symptoms (Kessler et al., 2005). The instrument consists of 18 items that correspond to the 18 symptom-criteria for ADHD found in the DSM-IV-TR (Association, 2000). Of these 18 questions, six have been identified as most predictive of ADHD-symptoms. The overall range of the entire measure is 0 to 72. However, there are separate items focusing on attention and hyperactivity.

    Change in ADHD symptoms from baseline to six-month follow-up

Secondary Outcomes (7)

  • Generalized Anxiety Disorder - 7 Items (GAD-7)

    Change in anxiety symptoms from baseline to 10 week (i.e., post-treatment)

  • Generalized Anxiety Disorder - 7 Items (GAD-7)

    Change in anxiety symptoms from baseline to six-month follow-up

  • Patient Health Questionnaire - 9 Items (PHQ-9)

    Change in depressive symptoms from baseline to 10 week (i.e., post-treatment)

  • Patient Health Questionnaire - 9 Items (PHQ-9)

    Change in depressive symptoms from baseline to six-month follow-up

  • Perceived Stress scale (PSS)

    Change in stress symptoms from baseline to 10 week (i.e., post-treatment)

  • +2 more secondary outcomes

Study Arms (2)

Internet-based cognitive behavioral therapy

EXPERIMENTAL
Behavioral: Internet-based cognitive behavioral therapy

Wait-list control

NO INTERVENTION

Interventions

A ten-week treatment based on cognitive behavioral therapy for ADHD, including two mandatory modules and at least four self-selected modules (out of ten available modules). The treatment consists of reading material and exercises to be completed each week.

Internet-based cognitive behavioral therapy

Eligibility Criteria

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

You may qualify if:

  • Over 18 years old of age.
  • Can read and write in Swedish.
  • Have access to a computer, tablet, or smartphone with an Internet connection.
  • Have previously been diagnosed with ADHD.
  • Are studying at a university or college in Sweden or working at least 50% of a full time-employment.

You may not qualify if:

  • Shows elevated symptoms of depression or risk of suicide, i.e., a total score on the Patient Health Questionnaire - 9 items (PHQ-9; Kroenke, K., Spitzer, R. L., \& Williams, J. B. (2001)), \> 15 points, or scores \> 2 points on question i) concerning suicidality.
  • Has started or changed their medication for any psychiatric diagnosis in the last three months.
  • Exhibits another form of psychiatric diagnosis that requires more specialized care, for example substance abuse syndrome, anorexia nervosa, bipolar disorder, psychotic symptoms, or schizophrenia, as assessed with the MINI (Sheehan et al., 1998).

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

Uppsala University

Uppsala, 751 42, Sweden

RECRUITING

MeSH Terms

Conditions

Attention Deficit Disorder with Hyperactivity

Condition Hierarchy (Ancestors)

Attention Deficit and Disruptive Behavior DisordersNeurodevelopmental DisordersMental Disorders

Study Officials

  • David Forsström, PhD

    Uppsala University

    PRINCIPAL INVESTIGATOR

Central Study Contacts

Alexander Rozental, PhD

CONTACT

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
NONE
Purpose
TREATMENT
Intervention Model
PARALLEL
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Principal Investigator

Study Record Dates

First Submitted

December 21, 2022

First Posted

January 26, 2023

Study Start

January 25, 2023

Primary Completion

November 1, 2025

Study Completion

December 31, 2025

Last Updated

September 2, 2025

Record last verified: 2025-08

Data Sharing

IPD Sharing
Will not share

Locations