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Short-Term Efficacy and Mechanisms of Change of a Worry Postponement Intervention for Generalized Anxiety Disorder

T

Toronto Metropolitan University

Status

Completed

Conditions

Generalized Anxiety Disorder

Treatments

Behavioral: Worry Monitoring
Behavioral: Worry Postponement

Study type

Interventional

Funder types

Other

Identifiers

NCT02806271
2016 - 143

Details and patient eligibility

About

Worry postponement is a commonly recommended treatment component in cognitive behavioral therapy for Generalized Anxiety Disorder in which people are asked to postpone naturally occurring instances of worry to a designated 30 minute "worry period" later in the day. Despite being commonly recommended, there is little known about the efficacy and mechanisms of worry postponement. The purpose of this study is to determine the efficacy and mechanisms of change of a two-week worry postponement intervention in people with Generalized Anxiety Disorder. Ninety subjects with generalized anxiety disorder will be randomly assigned to two weeks of daily worry postponement, two weeks of worry monitoring, or an assessment only control condition. Changes in worry or associated features will be examined at post intervention and at a 2-week follow up.

Full description

Generalized Anxiety Disorder (GAD) is a disorder characterized by excessive and uncontrollable worry. People with GAD report that worry significantly interferes with their ability to enjoy their life and function effectively in their roles. Worry postponement is a treatment technique developed by Borkovec and colleagues (1983) to reduce excessive worry. In worry postponement, people are instructed to notice naturally occurring episodes of worry and to then disengage from their worry and postpone it to a designated 30 minute "worry period" later in the day. People are instructed to confine their worry to this 30 minute period and to use that period to problem solve concerns they have been having. Worry postponement is a widely recommended technique for treating excessive worry in people with GAD and is often combined with other cognitive-behavioural interventions. Despite being commonly recommended, there are very few studies demonstrating worry postponement's efficacy for reducing worry, and no studies have looked at the effect of this intervention in people with GAD. The present study aims to extend the literature by comparing a two-week worry postponement intervention to worry monitoring alone and to an assessment only control condition. Participants will complete baseline self-report measures of worry and associated symptoms and cognitive processes. They will complete three computer tasks measuring attention control. They will then be randomized to one of three conditions (worry postponement, worry monitoring, assessment only control). Participants will follow instructions corresponding to their condition daily for two weeks. In the worry postponement and worry monitoring conditions this will involve completing brief daily worry questionnaires at home for the two weeks of the intervention. In the assessment only condition participants will not complete any measures during the two weeks after the first session. Subsequent to this, all participants will return to the lab to repeat baseline measures, and will return again two weeks later to complete measures. The entire study will require three lab visits, spanning over four weeks. This study aims to determine what the effects of worry postponement are, relative to worry monitoring and assessment only, on worry, GAD and associated symptoms, and cognitive processes related to worry. A secondary aim of this study is to examine which mechanisms predict change in worry in a worry postponement study. This will be the first study to our knowledge, to examine these questions in a sample of people with GAD. This study will provide important information for optimizing the treatment of worry in people with GAD.

Enrollment

83 patients

Sex

All

Ages

18 to 65 years old

Volunteers

No Healthy Volunteers

Inclusion criteria

  1. Endorse symptoms consistent with a primary diagnosis of Generalized Anxiety Disorder (GAD) as defined by DSM-5 (APA, 2013), with a clinician severity rating (CSR) ≥ 4
  2. If a comorbid diagnosis is present, its associated CSR is at least 1 point lower than that of their GAD diagnosis.

Exclusion criteria

  1. Have a current or past history of psychosis or mania, or endorse symptoms consistent with a diagnosis of a substance use disorder in the past 12 months
  2. Report clinically significant suicidal ideation, intent, or plan
  3. Participants will be excluded if they are currently receiving psychological treatment or counseling (e.g., cognitive behaviour therapy, supportive counseling, etc.), unless this treatment is infrequent (meeting once monthly or less) or the participant has been receiving consistent weekly treatment for 12 weeks and still meets all other eligibility criteria
  4. Are taking psychotropic medications and have had a change in dose in the past 12 weeks. If they have recently discontinued a psychotropic medication, they will be included if it has been at least 1 month since discontinuation, or 3 months if they had been taking fluoxetine/Prozac. If a participant is taking psychotropic medication on an as needed basis (e.g., benzodiazepines), they will be included and their use of this medication will be noted in order to assess whether it has a moderating effect on intervention outcome.

Trial design

Primary purpose

Treatment

Allocation

Randomized

Interventional model

Parallel Assignment

Masking

Single Blind

83 participants in 3 patient groups

Worry Postponement
Experimental group
Description:
Two weeks of daily worry postponement
Treatment:
Behavioral: Worry Postponement
Behavioral: Worry Monitoring
Worry Monitoring
Active Comparator group
Description:
Two weeks of daily worry monitoring
Treatment:
Behavioral: Worry Monitoring
Assessment Only Control
No Intervention group
Description:
No intervention, participants will complete three assessment time points

Trial contacts and locations

1

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Data sourced from clinicaltrials.gov

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