Generalized Anxiety DisorderNCT02552108
A Single-Component CBT for GAD
A study testing Behavioural experiments for intolerance of uncertainty (BE-IU) in people with Generalized Anxiety Disorder, run by Universite du Quebec en Outaouais at 1 site in Canada.
Trial summary
Generalized Anxiety Disorder (GAD) is a chronic condition that is characterized by excessive and uncontrollable worry and anxiety. In Canada, 3 to 4% of the population suffer from GAD at any point in time. Read more about this study
- Who is it for?
- Ages 18 years and olderHealthy volunteers can take part
- Conditions the study is for
- Generalized Anxiety Disorder
- What is being tested?
- Behavioural experiments for intolerance of uncertainty (BE-IU)
- Type of treatment
- Lifestyle or therapy programme
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 60 participants
- Where
- 1 siteCanada
- Study dates
- Oct 2015to Oct 2018
- Phase
- Interventional
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- All sexes
- Healthy volunteers accepted
- Adult, Older adult
Who may be able to join
- 1) at least 18 years of age; 2) principal diagnosis of GAD; 3) no change in medication type or dose in 4 to 12 weeks before study entry (4 weeks for benzodiazepines, 12 weeks for antidepressants and hypnotics); 4) willingness to keep medication status stable while participating in the study; 5) no use of herbal products known to have CNS effects in the 2 weeks before study entry; 6) no evidence of suicidal intent (based on clinical judgement); 7) no evidence of current substance abuse, current or past schizophrenia, bipolar disorder or organic mental disorder; 8) no current participation in other trials; 9) no concurrent psychotherapy during treatment phase of trial; 10) no evidence of anxiety symptoms due to a general medical condition based on clinical judgement (e.g., clinical hyperthyroidism, hypoglycaemia, anaemia).
Who cannot join
- -
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Behavioural Experiments for Intolerance of Uncertainty: A Single-Component Treatment for Generalized Anxiety Disorder
Generalized Anxiety Disorder (GAD) is a chronic condition that is characterized by excessive and uncontrollable worry and anxiety. In Canada, 3 to 4% of the population suffer from GAD at any point in time. These individuals have a lowered quality of life and are at risk for many medical conditions such as coronary heart disease and cancer. Research suggests that both pharmacological and psychological approaches are effective for treating GAD in the short-term; however, psychological treatments appear to offer the greatest long-term benefits. There exist a number of effective psychological treatments for GAD, most of which fall into the category of cognitive-behavioural therapy or CBT. In the 1990s, a group of Canadian investigators developed a CBT protocol for GAD that included four components. Data from five clinical trials suggest that one of the four components is particularly important for treatment success: experiencing uncertainty rather than avoiding it in everyday life. Stated differently, learning to tolerate and deal with uncertainty appears to be the key to decreasing worry and anxiety. Given this finding, the investigators have developed a new treatment that exclusively targets intolerance of uncertainty: Behavioural Experiments for Intolerance of Uncertainty or BE-IU. The goal of the current proposal is to test the efficacy of BE-IU by comparing it to a Waiting List (WL) control condition. A total of 50 participants with a primary diagnosis of GAD will be randomly assigned to either BE-IU or WL and will be assessed at 5 time points ranging from pre-treatment to 12-month follow-up. The conditions will be compared in terms of treatment efficacy and mechanisms. The investigators will also examine the predictors of change during the 12-months following treatment. The proposed study will produce data on the efficacy and mechanisms of a treatment for GAD that is less costly, less complex and easier to disseminate than treatments that are currently available.
- Conditions
- Generalized Anxiety Disorder
- Being tested
- Behavioural experiments for intolerance of uncertainty (BE-IU)
- Keywords
- Cognitive-behavioural therapy
- Medical subject headings
- Generalized Anxiety Disorder
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Behavioural experiments for intolerance of uncertainty (BE-IU)Behavioural
Also called CBT
| Study group | Role | What they receive |
|---|---|---|
| Behavioural experiments (CBT) | Experimental | Behavioural experiments involve selecting a specific thought to be tested (e.g., "uncertainty makes me unable to act") and designing a detailed experiment to test out the thought. Receives: Behavioral: Behavioural experiments for intolerance of uncertainty (BE-IU) |
| Waiting list | No intervention | 12 week wait (with assessments) before being transferred to the experimental condition. |
What is being measured
The primary outcome is the main question the study is designed to answer.
Clinician's Severity Rating (CSR) of Anxiety Disorders Interview Schedule (ADIS)
Structured diagnostic interview
Measured: 12 weeks
Secondary outcomes (4)
Penn State Worry Questionnaire (PSWQ)
Self-report questionnaire
Measured: 12 weeks
Worry and Anxiety Questionnaire (WAQ)
Self-report questionnaire
Measured: 12 weeks
Beck Anxiety Inventory (BAI)
Self-report questionnaire
Measured: 12 weeks
Beck Depression Inventory-II (BDI-II)
Self-report questionnaire
Measured: 14 weeks
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted16 Sep 2015 (estimated)
- Study startOct 2015
- Primary completionOct 2018
- Study completionOct 2018
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (1)Papers the sponsor has linked to this study.
- Other trials for Generalized Anxiety DisorderStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Single blind
- Who is masked
- Outcomes assessor
- Enrolment
- 60 participants (actual)
Sponsor and investigators
- Lead sponsor
- Universite du Quebec en Outaouais
- Sponsor type
- University, hospital or other
- Collaborators
- Canadian Institutes of Health Research (CIHR), Concordia University, Montreal, University College, London
- Responsible party
- Principal investigator, Michel Dugas, Ph.D., Universite du Quebec en Outaouais
- Investigators
- Michel J Dugas, Ph.D., Principal investigator, Université du Québec en Outaouais
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT02552108
- Sponsor's protocol ID
- UQuebecOutaouais
- Status last verified
- Jun 2020
- First submitted
- 15 Sep 2015
- Last updated
- 5 Jun 2020
- Results posted
- No
- Data monitoring committee
- No
Publications
Dugas MJ, Sexton KA, Hebert EA, Bouchard S, Gouin JP, Shafran R. Behavioral Experiments for Intolerance of Uncertainty: A Randomized Clinical Trial for Adults With Generalized Anxiety Disorder. Behav Ther. 2022 Nov;53(6):1147-1160. doi: 10.1016/j.beth.2022.05.003. Epub 2022 May 27.
PubMed 36229113
Study at a glance
From the registry record, last updated by the sponsor on 5 Jun 2020. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Behavioural Experiments for Intolerance of Uncertainty: A Single-Component Treatment for Generalized Anxiety Disorder
- ClinicalTrials.gov ID
- NCT02552108
- Acronym / sponsor ID
- UQuebecOutaouais
- Conditions
- Generalized Anxiety Disorder
- Keywords
- Cognitive-behavioural therapy
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 60 participants (actual)
- Lead sponsor
- Universite du Quebec en OutaouaisUniversity, hospital or other
- Collaborators
- Canadian Institutes of Health Research (CIHR), Concordia University, Montreal, University College, London
- Study start
- Oct 2015 (actual)
- Primary completion
- Oct 2018 (actual)
- Study completion
- Oct 2018 (actual)
- First posted
- 16 Sep 2015 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Generalized Anxiety Disorder (GAD) is a chronic condition that is characterized by excessive and uncontrollable worry and anxiety. In Canada, 3 to 4% of the population suffer from GAD at any point in time. These individuals have a lowered quality of life and are at risk for many medical conditions such as coronary heart disease and cancer. Research suggests that both pharmacological and psychological approaches are effective for treating GAD in the short-term; however, psychological treatments appear to offer the greatest long-term benefits. There exist a number of effective psychological treatments for GAD, most of which fall into the category of cognitive-behavioural therapy or CBT. In the 1990s, a group of Canadian investigators developed a CBT protocol for GAD that included four components. Data from five clinical trials suggest that one of the four components is particularly important for treatment success: experiencing uncertainty rather than avoiding it in everyday life. Stated differently, learning to tolerate and deal with uncertainty appears to be the key to decreasing worry and anxiety. Given this finding, the investigators have developed a new treatment that exclusively targets intolerance of uncertainty: Behavioural Experiments for Intolerance of Uncertainty or BE-IU. The goal of the current proposal is to test the efficacy of BE-IU by comparing it to a Waiting List (WL) control condition. A total of 50 participants with a primary diagnosis of GAD will be randomly assigned to either BE-IU or WL and will be assessed at 5 time points ranging from pre-treatment to 12-month follow-up. The conditions will be compared in terms of treatment efficacy and mechanisms. The investigators will also examine the predictors of change during the 12-months following treatment. The proposed study will produce data on the efficacy and mechanisms of a treatment for GAD that is less costly, less complex and easier to disseminate than treatments that are currently available.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Single blind (outcomes assessor)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Behavioural experiments (CBT) | Experimental | Behavioral: Behavioural experiments for intolerance of uncertainty (BE-IU)Behavioural experiments involve selecting a specific thought to be tested (e.g., "uncertainty makes me unable to act") and designing a detailed experiment to test out the thought. |
| Waiting list | No intervention | –12 week wait (with assessments) before being transferred to the experimental condition. |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (1 listed)
- 1) at least 18 years of age; 2) principal diagnosis of GAD; 3) no change in medication type or dose in 4 to 12 weeks before study entry (4 weeks for benzodiazepines, 12 weeks for antidepressants and hypnotics); 4) willingness to keep medication status stable while participating in the study; 5) no use of herbal products known to have CNS effects in the 2 weeks before study entry; 6) no evidence of suicidal intent (based on clinical judgement); 7) no evidence of current substance abuse, current or past schizophrenia, bipolar disorder or organic mental disorder; 8) no current participation in other trials; 9) no concurrent psychotherapy during treatment phase of trial; 10) no evidence of anxiety symptoms due to a general medical condition based on clinical judgement (e.g., clinical hyperthyroidism, hypoglycaemia, anaemia).
Key exclusion criteria (1 listed)
- -
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Behavioural experiments for intolerance of uncertainty (BE-IU)Also: CBT | Behavioural | Behavioural experiments (CBT) |
Primary outcome
Clinician's Severity Rating (CSR) of Anxiety Disorders Interview Schedule (ADIS)
Time frame: 12 weeks
Structured diagnostic interview
4 secondary outcomes
Penn State Worry Questionnaire (PSWQ)
Time frame: 12 weeks
Worry and Anxiety Questionnaire (WAQ)
Time frame: 12 weeks
Beck Anxiety Inventory (BAI)
Time frame: 12 weeks
Beck Depression Inventory-II (BDI-II)
Time frame: 14 weeks
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 5 Jun 2020.
- Derived from this study: PubMed 36229113Dugas MJ, Sexton KA, Hebert EA, Bouchard S, Gouin JP, Shafran R. Behavioral Experiments for Intolerance of Uncertainty: A Randomized Clinical Trial for Adults With Generalized Anxiety Disorder. Behav Ther. 2022 Nov;53(6):1147-1160. doi: 10.1016/j.beth.2022.05.003. Epub 2022 May 27.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Michel J Dugas, Ph.D. principal investigator
Université du Québec en Outaouais
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A study testing Behavioural experiments for intolerance of uncertainty (BE-IU) in people with Generalized Anxiety Disorder, run by Universite du Quebec en Outaouais at 1 site in Canada.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 1 inclusion and 1 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 5 Jun 2020. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Canada. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Clinician's Severity Rating (CSR) of Anxiety Disorders Interview Schedule (ADIS) (time frame: 12 weeks). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT02552108, which also lists 1 linked publication.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 5 Jun 2020.