CBT for Anxiety Sensitivity vs. Disorder-specific CBT: An RCT

Comparing the Efficacy of CBT for Anxiety Sensitivity to Disorder-specific CBT in Reducing Mental Health Symptoms: A Randomized Controlled Trial

Adults with high anxiety sensitivity (AS) and a mental health diagnosis of anxiety, depression, or posttraumatic stress will be recruited and will be randomly assigned to either transdiagnostic cognitive behavioural therapy (CBT) for AS or disorder-specific CBT for their primary mental health problem. The study outcomes - AS, anxiety, mood, and substance use symptoms, and functional impairment - will be assessed at pre-and post-treatment and 6 and 12 months post-treatment via standardized self-report measures completed by participants and a standardized diagnostic interview.

Study Overview

• Status: Unknown
• Conditions: Major Depression; Social Anxiety; Panic Disorder; Generalized Anxiety; Stress Disorder, Posttraumatic
• Intervention / Treatment: Behavioral: Cognitive Behavioural Therapy

Detailed Description

While our previous work has provided some evidence that cognitive behavioural therapy (CBT) for anxiety sensitivity(AS) reduces mental health symptoms, the current study aims to determine whether this treatment works as well as traditional disorder-specific CBT (which aims to treat the specific disorder a person presents with, such as CBT for panic disorder for someone with panic disorder) in treating anxiety and depression. This will be the first study to have looked at this question.

Our objectives are to determine:

1. if there is a difference in the extent to which CBT for AS vs. disorder-specific CBT reduces, in the short- and long-term, a) AS, b) symptoms of a person's primary and secondary mental health problems, and c) functional disability (i.e., a person's ability to function in day-to-day life);
2. if the two treatments lead to differences in the number of participants who no longer meet the requirements for a diagnosis (of their primary or secondary mental health problems) in the short- and long-term; and
3. if the treatments are seen as similarly satisfactory by participants.

Eligible participants will be randomly assigned (via online random number generator) to either transdiagnostic CBT for AS or disorder-specific CBT for their primary mental health problem. Both CBT interventions are evidence-based, guided by treatment manuals/workbooks (provided to participants), and involve 12 weekly therapy sessions. The AS intervention will also involve a physical exercise component (i.e., running/brisk walking 3x/week starting on week 5) and participants will be provided with a wearable fitness device designed to provide physiological indices of arousal and track physical activity. The study outcomes - AS, anxiety, mood, and substance use symptoms, and functional impairment - will be assessed at pre-and post-treatment and 6 and 12 months post-treatment via standardized self-report measures completed by participants and a standardized diagnostic interview.

• Study Type: Interventional
• Enrollment (Anticipated): 136
• Phase: Not Applicable

Contacts and Locations

• Study Contact: Name: Sherry Stewart, PhD; Phone Number: 9024943793; Email: sherry.stewart@dal.ca
• Study Contact Backup: Name: Jennifer Swansburg, BSc; Phone Number: 9024943793; Email: jennifer.swansburg@dal.ca

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 19 years and older (Adult, Older Adult)
• Accepts Healthy Volunteers: Yes
• Genders Eligible for Study: All

Description

Inclusion Criteria:

• Literate
• High Anxiety Sensitivity (high AS, participants must score ≥23 on the Anxiety Sensitivity Index - 3)
• Live in the surrounding area of Halifax, Nova Scotia or Fredericton, New Brunswick
• Must have a primary diagnosis of one of Agoraphobia, Generalized Anxiety Disorder (GAD), Social Anxiety Disorder (SAD), Panic Disorder (PD), Other Specified Anxiety Disorder, Major Depressive Disorder (MDD), Posttraumatic Stress Disorder (PTSD), or Illness Anxiety Disorder (IAD) according to the Diagnostic and Statistical Manual of Mental Disorders, 5th edition (DSM-5; APA, 2013) as determined by a Structured Clinical Interview for DSM-5 Disorders

Exclusion Criteria:

• Must not have any contraindications to physical exercise
• Must not be engaged in another current psychotherapy as it may interfere with the treatment under investigation
• Need to be able to attend intervention sessions at Dalhousie University or the University of New Brunswick
• Must not have current Bipolar Disorder and psychosis nor current suicidal intent

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: Single

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Anxiety Sensitivity Cognitive Therapy; Participants in the Cognitive Behavioural Therapy for AS condition will complete 8 weekly 50-minute therapy sessions and will be asked to continue with some parts of the intervention (i.e., interoceptive exposure) independently for the next 4 weeks, with short weekly check-ins by phone with their therapist.	Behavioral: Cognitive Behavioural Therapy; A type of talk therapy called cognitive behaviour therapy (CBT) will be delivered to both groups.
Active Comparator: Disorder specific Cognitive Therapy; Participants in the disorder-specific Cognitive Behavioural Therapy intervention will receive 12 weekly 50-minute therapy sessions following established, evidence-based protocols for each of the disorders included in the study.	Behavioral: Cognitive Behavioural Therapy; A type of talk therapy called cognitive behaviour therapy (CBT) will be delivered to both groups.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Change in anxiety sensitivity: the Anxiety Sensitivity Index - 3 (ASI-3)	The ASI-3 is an 18-item self-report measure that indexes the amount of fear an individual experiences with respect to anxiety-related body sensations. Participants indicate the extent to which they agree or disagree with each item (e.g., "It scares me when my heart beats rapidly") on a 5-point Likert-type scale.	baseline (i.e., start of study), 12 weeks, 6 months, and 12 months follow-up.
Change in primary diagnosis (e.g., anxiety disorder or depression) symptoms	Primary diagnosis (e.g., anxiety disorder or depression) symptoms, as measured by a standardized score on one of the Panic Attack Questionnaire - IV, the Fear Questionnaire, the Generalized Anxiety Disorder - 7-item, the Liebowitz Social Anxiety Scale, the PTSD Checklist for DSM-5, the Pain Anxiety Symptom Scale - 20-item, or the Patient Health Questionnaire - 9-item.	baseline (i.e., start of study), 12 weeks, 6 months, and 12 months follow-up
Change in comorbid diagnosis (e.g., anxiety disorders or depression) symptoms	Comorbid diagnosis (e.g., anxiety disorder or depression) symptoms, as measured by a standardized score on one of the Panic Attack Questionnaire - IV, the Fear Questionnaire, the Generalized Anxiety Disorder - 7-item, the Liebowitz Social Anxiety Scale, the PTSD Checklist for DSM-5, the Pain Anxiety Symptom Scale - 20-item, or the Patient Health Questionnaire - 9-item.	baseline (i.e., start of study), 12 weeks, 6 months, and 12 months follow-up.

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Diagnostic status as measured by the Structured Clinical Interview for DSM-5 (SCID-5)	Administered by a trained researcher blind to treatment condition. The SCID-5 has been widely used in numerous research studies and is well empirically validated. At each time point, we will assess participants' primary and secondary diagnoses as well as the overall number of diagnoses for which they qualify.	baseline (i.e., start of study), 12 weeks, 6 months, and 12 months follow-up
General distress as measured by the Depression Anxiety Stress Scale (DASS-21)	The Depression Anxiety Stress Scales - 21. The DASS-21 is a shortened version of the 42-item DASS and is composed of three subscales: Depression, Anxiety, and Stress. Individuals indicate the extent to which a particular negative emotional state (e.g., "I found it difficult to relax") has applied to them over the past week on a 4-point Likert-type scale (0 = Did not apply to me at all to 3 = Applied to me very much or most of the time).	baseline (i.e., start of study), 12 weeks, 6 months, and 12 months follow-up
General distress as measured by the Clinical Outcomes in Routine Evaluation measure (CORE-10)	Clinical Outcomes in Routine Evaluation (CORE-10) is a brief, 10-item self-report measure designed to assess common presentations of symptoms of psychological distress. Participants are asked to indicate how often in the past week they have felt a series of symptoms (e.g., "I have felt tense, anxious, or nervous") on a 5-point Likert-type scale.	baseline (i.e., start of study), 12 weeks, 6 months, and 12 months follow-up
Functional disability as measured by the Sheehan Disability Scale (SDS)	The Sheehan Disability Scale will be used to measure functional impairment in three domains: work/school, family life, and social. Using a 10-point visual analogue scale, participants rate the extent to which their general mental health symptoms disrupt their work/school, family life/responsibilities, and social life. Participants also indicate the number of days their mental health symptoms caused them to miss school/work as well as the number of days their symptoms had caused their performance to be reduced during the past week. The SDS is well-validated and widely used with a range of populations.	baseline (i.e., start of study), 12 weeks, 6 months, and 12 months follow-up
Drinking Motives as measured by the Modified Drinking Motives Questionnaire - Revised (MDMQ-R)	The MDMQ-R measures drinking motives. Respondents estimate how often they drink for the reason specified in each item on a 5-point Likert-type scale.	baseline (i.e., start of study), 12 weeks, 6 months, and 12 months follow-up
Hazardous alcohol use as measured by the Alcohol Use Disorders Identification Test (AUDIT)	Despite being designed as a screening tool, the AUDIT is commonly used to assess alcohol use problems pre- and post-treatment. The AUDIT is a 10-item self-report measure that asks participants to report on their frequency of alcohol use, binge drinking, and alcohol-dependent behaviours. Responses are scored on 5-point Likert-type scales. Finally, participants report if they have experienced problems caused by alcohol use on a 3-point Likert-type scale.	baseline (i.e., start of study), 12 weeks, 6 months, and 12 months follow-up
Alcohol-related problems as measured by the Short Inventory of Problems (SIP-2R)	The SIP-2R consists of the three items from each of five subscales. Participants are asked to indicate the frequency with which they have experienced each of 15 drinking-related problems on a 4-point Likert-type scale.	baseline (i.e., start of study), 12 weeks, 6 months, and 12 months follow-up
Treatment alliance as measured by the Working Alliance Inventory - Short-form (WAI-SR)	The WAI-SR is a 12-item self-report questionnaire comprised of three subscales: Goals, or agreement on the goals of therapy, Tasks, or agreement on the tasks of therapy, and Bonds, or the bond between the therapist and the client. Participants indicate the extent to which each of these statements reflects their experience on a 5-point Likert-type scale.	Only at 12 weeks
Treatment satisfaction as measured by several short researcher-generated questions	In order to assess satisfaction with the different components of treatment, participants will answer a series of open-ended questions about their experience (e.g., "Was the treatment convenient for you to engage in?"; "Did you find the telephone therapy sessions helpful?") after all parts of treatment are completed (i.e., at 12 weeks).	Only at 12 weeks

Collaborators and Investigators

• Sponsor: Sherry Stewart
• Collaborators: Canadian Institutes of Health Research (CIHR); Dalhousie University; University of New Brunswick
• Investigators: Principal Investigator: Margo Watt, PhD, St. Francis Xavier University; Principal Investigator: Janine Olthuis, PhD, University of New Brunswick

Study record dates

Study Major Dates

• Study Start: January 1, 2017
• Primary Completion (Anticipated): August 1, 2019
• Study Completion (Anticipated): August 1, 2019

Study Registration Dates

• First Submitted: December 19, 2016
• First Submitted That Met QC Criteria: January 6, 2017
• First Posted (Estimate): January 10, 2017

Study Record Updates

• Last Update Posted (Estimate): January 10, 2017
• Last Update Submitted That Met QC Criteria: January 6, 2017
• Last Verified: January 1, 2017

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Mental Disorders; Pathologic Processes; Trauma and Stressor Related Disorders; Stress Disorders, Traumatic; Disease; Anxiety Disorders; Stress Disorders, Post-Traumatic; Panic Disorder
• Other Study ID Numbers: 1021903

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: NO
• IPD Plan Description: Data will only be shared between investigators at the two study sites once it has been de-identified and entered into a data analytic program in order to protect participants' privacy and confidentiality.