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Social Anxiety Disorder (Social Phobia)OPTIMIZENCT04879641

Optimizing Cognitive-behavioral Therapy for Social Anxiety Disorder Using the Factorial Design

A study testing Exposure, Attention Training and Cognitive Restructuring in people with Social Anxiety Disorder (Social Phobia), run by University of Bern at 1 site in Switzerland.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

Social Anxiety Disorder (SAD) is characterized by a marked fear of negative evaluation in social situations. It is the third most common psychiatric disorder and highly disabling (American Psychiatric Association, 2000). Read more about this study

Who is it for?
Ages 18 years and older
Conditions the study is for
Social Anxiety Disorder (Social Phobia)
What is being tested?
Exposure, Attention Training and Cognitive Restructuring
Could I receive a placebo?
No, everyone receives an active treatment
How many people
464 participants
Where
1 siteSwitzerland
Study dates
15 Aug 2021to 29 Feb 2024
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
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • 1. read the study information and sign informed consent;
  • 2. are 18 years or older;
  • 3. have access to the Internet, to a smartphone, PC or tablet;
  • 4. have sufficient knowledge of German;
  • 5. exceed predefined cut-off scores on one of the social anxiety measures (22 points on the Social Phobia Scale or 33 points on the Social Interaction Anxiety Scale; SPS \& SIAS);
  • 6. fulfil the diagnostic criteria of SAD according to the diagnostic telephone interview (the presence of other disorders does not result in exclusion if SAD is the primary diagnosis)
  • 7. in the case of taking psychiatric medication, the treatment is stabilized (over one month)

Who cannot join

  • 1. they score 2 or higher on the suicide item of the PHQ-9 (Spitzer, 1999) or with active suicidal plans in the diagnostic telephone interview.
  • 2. they have other comorbid psychiatric conditions that might be the main focus of clinical attention (e.g., psychotic symptoms, bipolar disorder, or other severe disorder)
  • 3. they undergo another psychological treatment at the beginning of the study.

Trial locations and contacts

1 site in 1 country.

Switzerland1 site
  • Clinical Psychology and Psychotherapy Department, University of Bern

    Bern, 3012

Other trials in Switzerland

About this study

Official title: Optimizing Cognitive-behavioral Therapy for Social Anxiety Disorder Using the Factorial Design: What Works Best and How Does it Work (OPTIMIZE)

Social Anxiety Disorder (SAD) is characterized by a marked fear of negative evaluation in social situations. It is the third most common psychiatric disorder and highly disabling (American Psychiatric Association, 2000). Although effective treatments such as cognitive-behavioral therapy (CBT) are available, most individuals suffering from SAD do not seek and eventually find help, and even in the best available treatments, remission rates are below 50%. The overall aim of the project is to better understand and improve the efficacy of Internet-based CBT (ICBT) that has shown to be efficacious in many trials and that provide broad and low-threshold access to empirically supported treatments. Specifically the objectives of the study are:

  1. to investigate the active ingredients of ICBT for SAD by testing the main effects and interactions for the four main treatment components (i.e., psychoeducation, cognitive restructuring, attention training, and exposure);
  2. to investigate the effects of each treatment component on hypothesized change mechanisms, and to explore whether and which change mechanisms mediate the effect of the treatment components on symptom reduction.
  3. to investigate whether the specific mechanisms mediate the effect of the treatment components on primary and secondary outcomes.
Read the detailed description

Social Anxiety Disorder (SAD) is characterized by a marked fear of negative evaluation in social situations. It is the third most common psychiatric disorder and highly disabling. Although effective treatments such as cognitive-behavioral therapy (CBT) are available, most individuals suffering from SAD do not seek and eventually find help, and even in the best available treatments, remission rates are below 50%. The overall aim of the project is to improve the efficacy of Internet-based CBT (ICBT) that has shown to be efficacious in many trials and that provide broad and low-threshold access to empirically supported treatments. Specifically, the objectives of the study are:

  1. to investigate the active ingredients of ICBT for SAD by testing the main effects and interactions for the four main treatment components (i.e., psychoeducation, cognitive restructuring, attention training, and exposure);
  2. to investigate the effects of each treatment component on hypothesized change mechanisms (change of the knowledge of SAD, change on negative social cognitions, changes on self-focused attention, changes on social avoidance and use of safety behaviors), and to explore whether and which change mechanisms mediate the effect of the treatment components on symptom reduction.
  3. to investigate whether the specific mechanisms mediate the effect of the treatment components on primary and secondary outcomes.

The study is a single-center, factorial trial with four experimental factors (treatment components, i.e., psychoeducation, cognitive restructuring, attention training, and exposure) each evaluated at two levels (presence vs. absence) resulting in 16 conditions.

Recruitment: Participants will be recruited using reports in newspapers, through internet forums, social media (e.g., Facebook), and via our website (https://www.online-therapy.ch/) in German-speaking countries.

Sampling: After checking the inclusion criteria, participants will be randomized with equal probability to one of the 16 conditions. The random allocation will be unknown to the investigators. In order to keep the sample sizes of the 16 conditions similar, the allocation list will be made using randomly permuted blocks. A total of 464 participants with a Diagnostic and Statistical Manual of Mental Disorders diagnosis of SAD will be included, with 29 patients being assigned to each of the 16 conditions.

Assessment procedures: The primary outcome measure is change in symptoms of SAD at post-treatment, i.e., after 8 weeks. Secondary outcomes include sustaining change at follow up (6 months after baseline), changes in depressive symptoms, changes in general anxiety symptoms, changes in quality of life, adherence to treatment, treatment satisfaction, negative effects and changes of diagnosis of SAD. Furthermore, the hypothesized change mechanisms (change of the knowledge of SAD, change on negative social cognitions, changes in self-focused attention, changes in social avoidance and use of safety behaviors) will be assessed. Self-report measures are taken at pre-treatment (baseline), after 4 weeks (mid-treatment), after 8 weeks (post-treatment), and at 6 months after randomization (follow-up). Besides the self-report measures, a diagnostic interview will be conducted by phone at pre-treatment, eight weeks (posttreatment), and six months (follow-up). The structured M.I.N.I. Interview will be used. The interviews will be administered by advanced Master students in clinical psychology and psychotherapy supervised by the study team. Interrater reliability will be assessed on a subset of the cases.

Treatment: The internet-based self-help program ("Shyne", https://selfhelp1.psy.unibe.ch/shyne/) is based on the well-established cognitive-behavioral treatment of social anxiety by Clark and Wells and has been proven efficacious in previous studies. Shyne is accessed through a secure website, with each participant having a password-protected account. It consists of the following four treatment components: (1) psychoeducation (knowledge about SAD and its treatment); (2) cognitive restructuring (challenging dysfunctional social cognitions); (3) attention training (decrease of self-focused attention); and (4) exposure (decrease of avoidance of feared situations and safety behaviors). These treatment components will be offered in 16 different combinations.

Data analysis: Primary analyses will be conducted on the Intention-To-Treat (ITT) sample (i.e., all randomized participants). The analyses are carried out on the basis of the intention-to-treat (ITT) approach using linear mixed models. In addition, but only secondary, completers analysis will be carried out. In order to test for main and interaction effects of treatment components on outcomes and change mechanisms across the time points of assessment, linear mixed models Analysis of Variance (ANOVA) or latent growth curve modelling will be used. Main effects and interactions will be based on aggregates across experimental conditions. Sensitivity analyses will explore the impact of the imputation of missing values. For binary outcome data (i.e., SAD diagnosis), a logistic regression model will be used. Furthermore, mediation analyses will be used to determine whether the hypothesized change mechanisms mediate the effect of the treatment components on primary and secondary outcomes. The mediation will be tested using an approach that allows multiple mediators in one model. In addition, potential moderation of the treatment components by various measured variables such as comorbid disorder, medication, the severity of SAD, age and sex will be investigated. Reporting will follow CONSORT E-Health standards.

Being tested
Exposure, Attention Training, Cognitive Restructuring, Psychoeducation
Medical subject headings
Phobia, Social

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • ExposureBehavioural

    Participants are instructed to plan and track in vivo exposures using an exposure diary. Participants are also instructed to reduce safety behaviors, which are overt or covert acts such as avoiding eye contact or rehearsing sentences to prevent a feared outcome.

  • Attention TrainingBehavioural

    Participants are trained to reduce self-focused and biased attention. Various audio exercises are introduced in which participants learn to intentionally direct the attention away from themselves (i.e., less private self-consciousness), and to be less alert to potentially dangerous external social stimuli (i.e., less public self-consciousness).

  • Cognitive RestructuringBehavioural

    Participants are instructed to identify and modify dysfunctional and negatively biased assumptions. It includes a thought diary to track negative beliefs in daily routine, alongside with exercises to formulate helpful and adaptive thoughts.

  • PsychoeducationBehavioural

    Participants are delivered detailed evidence-based information on SAD with a focus on maintaining processes (e.g., the vicious circle of negative thoughts and emotions, cognitions, and behaviors associated with the maintenance of SAD). Based on the information provided, participants are encouraged to develop an individual model of their social anxiety symptoms.

Study groups in NCT04879641
Study groupRoleWhat they receive
1_Waiting List controlNo interventionRandomized participants will only get the full intervention after study completion period (6 months since the randomization)
2_Exposure onlyExperimentalRandomized participants will only get the Exposure component
Receives: Behavioral: Exposure
3_Attention Training onlyExperimentalRandomized participants will only get the Attention Training component
Receives: Behavioral: Attention Training
4_Exposure + Attention TrainingExperimentalRandomized participants will get Exposure + Attention Training components
Receives: Behavioral: Exposure; Behavioral: Attention Training
5_Cognitive Restructuring onlyExperimentalRandomized participants will only get the Cognitive Restructuring component
Receives: Behavioral: Cognitive Restructuring
6_Cognitive Restructuring + ExposureExperimentalRandomized participants will get Cognitive Restructuring + Exposure components
Receives: Behavioral: Exposure; Behavioral: Cognitive Restructuring
7_Cognitive Restructuring + Attention TrainingExperimentalRandomized participants will get Cognitive Restructuring + Attention Training components
Receives: Behavioral: Attention Training; Behavioral: Cognitive Restructuring
8_Cognitive Restructuring + Attention Training + ExposureExperimentalRandomized participants will get Cognitive Restructuring + Attention Training + Exposure components
Receives: Behavioral: Exposure; Behavioral: Attention Training; Behavioral: Cognitive Restructuring
9_Psychoeducation onlyExperimentalRandomized participants will only get the Psychoeducation component
Receives: Behavioral: Psychoeducation
10_Psychoeducation + ExposureExperimentalRandomized participants will get the Psychoeducation + Exposure components
Receives: Behavioral: Exposure; Behavioral: Psychoeducation
11_Psychoeducation + Attention TrainingExperimentalRandomized participants will get the Psychoeducation + Attention Training components
Receives: Behavioral: Attention Training; Behavioral: Psychoeducation
12_Psychoeducation + Attention Training + ExposureExperimentalRandomized participants will get the Psychoeducation + Attention Training + Exposure components
Receives: Behavioral: Exposure; Behavioral: Attention Training; Behavioral: Psychoeducation
13_Psychoeducation + Cognitive RestructuringExperimentalRandomized participants will get the Psychoeducation + Cognitive Restructuring components
Receives: Behavioral: Cognitive Restructuring; Behavioral: Psychoeducation
14_Psychoeducation + Cognitive Restructuring + ExposureExperimentalRandomized participants will get the Psychoeducation + Cognitive Restructuring + Exposure components
Receives: Behavioral: Exposure; Behavioral: Cognitive Restructuring; Behavioral: Psychoeducation
15_Psychoeducation + Cognitive Restructuring + Attention TrainingExperimentalRandomized participants will get the Psychoeducation + Cognitive Restructuring + Attention Training components
Receives: Behavioral: Attention Training; Behavioral: Cognitive Restructuring; Behavioral: Psychoeducation
16_full version (Psychoeducation + Cognitive Restructuring + Attention Training + Exposure)ExperimentalRandomized participants will get the Psychoeducation + Cognitive Restructuring + Attention Training + Exposure components
Receives: Behavioral: Exposure; Behavioral: Attention Training; Behavioral: Cognitive Restructuring; Behavioral: Psychoeducation

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Change on social anxiety symptoms at post-treatment

    Composite endpoint. Social anxiety symptoms are measured as the combined score of the Social Phobia Scale and the Social Interaction Anxiety Scale (SPS \& SIAS; Mattick \& Clarke, 1998). These instruments are complementary and used as one single measurement. They assess the fear of being judged by others during daily activities (SPS) and more general fears in social interaction (SIAS). The combined scale consists of 40 items and scores range from 0 (no social anxiety symptoms) to 160 (severe social anxiety symptoms).

    Measured: Baseline, Mid-treatment (4 weeks after baseline), Post-treatment (8 weeks after baseline)

Secondary outcomes (7)
  1. Change on social anxiety symptoms at follow-up

    Social anxiety symptoms are measured as the combined score of the Social Phobia Scale and the Social Interaction Anxiety Scale (SPS \& SIAS; Mattick \& Clarke, 1998). These instruments are complementary and used as one measurement. They assess the fear of being judged by others during daily activities (SPS) and more general fears in social interaction (SIAS). The combined scale consists of 40 items and scores range from 0 (no social anxiety symptoms) to 160 (severe social anxiety symptoms).

    Measured: Baseline, Mid-treatment (4 weeks after baseline), Post-treatment (8 weeks after baseline), Follow-up (6 months after baseline)

  2. Change on the severity of depressive symptoms

    Depressive symptoms will be measured by the Patient Health Questionnaire (PHQ-9; Spitzer et al., 1999). Scores range from 0 (no depressive symptoms) to 27 (severe depressive symptoms).

    Measured: Baseline, Mid-treatment (4 weeks after baseline), Post-treatment (8 weeks after baseline), Follow-up (6 months after baseline)

  3. Change on the severity of general anxiety symptoms

    Severity of anxiety symptoms will be measured by the Generalized Anxiety Disorder Scale (GAD-7; Spitzer et al., 2006). Scores range from 0 (no general anxiety symptoms) to 21 (severe general anxiety symptoms)

    Measured: Baseline, Mid-treatment (4 weeks after baseline), Post-treatment (8 weeks after baseline), Follow-up (6 months after baseline)

  4. Change on quality of life

    Quality of life will be measured by the Short-Form Health Survey-12 (SF-12; Ware et al., 1996). Scores range from 12 (high quality of life) to 53 (poor quality of life).

    Measured: Baseline, Mid-treatment (4 weeks after baseline), Post-treatment (8 weeks after baseline), Follow-up (6 months after baseline)

  5. Level of satisfaction with the treatment

    Treatment satisfaction will be measured by the Client Satisfaction Questionnaire (CSQ-8; Attkisson \& Zwick, 1982), adapted to internet-based interventions. Scores range from 0 (not satisfied at all) to 24 (extremely satisfied).

    Measured: Post-treatment (8 weeks after baseline)

  6. Negative effects of the treatment

    Adverse effects on social, intrapersonal or work-related situations and whether they are attributed to the intervention will be measured on the 15 items Negative Effects of the Treatment scale (INEP; Ladwig et al., 2014). The scores range from - 39 (worse) to +18 (best), in which negative values indicate negative effects of the intervention

    Measured: Mid-treatment (4 weeks after baseline), Post-treatment (8 weeks after baseline), Follow-up (6 months after baseline)

  7. Change on the diagnosis of social anxiety disorder

    Diagnosis of social anxiety disorder will be assessed with M.I.N.I International Neuropsychiatric Interview for DSM-IV 6.0.0 (M.I.N.I; Sheehan et al., 1998). Possible diagnoses are absence or presence of SAD, current or past, generalized or specific, primary diagnosis (yes or no)

    Measured: Baseline, Post-treatment (8 weeks after baseline), Follow-up (6 months after baseline)

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted10 May 2021
  2. Study start15 Aug 2021
  3. Primary completion18 Oct 2023
  4. Study completion29 Feb 2024

Resources

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
Factorial
Model description
The study is a single-center, factorial trial with four experimental factors (treatment components, i.e., psychoeducation, cognitive restructuring, attention training, and exposure) each evaluated at two levels (presence vs. absence) resulting in 16 treatment conditions.
Masking
Single blind
Who is masked
Participant
Enrolment
464 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT04879641
Sponsor's protocol ID
OPTIMIZE_TRIAL
Acronym
OPTIMIZE
Status last verified
May 2024
First submitted
9 Apr 2021
Last updated
16 May 2024
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
Yes

Publications

  • Sheehan DV, Lecrubier Y, Sheehan KH, Amorim P, Janavs J, Weiller E, Hergueta T, Baker R, Dunbar GC. The Mini-International Neuropsychiatric Interview (M.I.N.I.): the development and validation of a structured diagnostic psychiatric interview for DSM-IV and ICD-10. J Clin Psychiatry. 1998;59 Suppl 20:22-33;quiz 34-57.

    PubMed 9881538
  • Berger T, Hohl E, Caspar F. Internet-based treatment for social phobia: a randomized controlled trial. J Clin Psychol. 2009 Oct;65(10):1021-35. doi: 10.1002/jclp.20603.

    PubMed 19437505
  • Schulz A, Stolz T, Vincent A, Krieger T, Andersson G, Berger T. A sorrow shared is a sorrow halved? A three-arm randomized controlled trial comparing internet-based clinician-guided individual versus group treatment for social anxiety disorder. Behav Res Ther. 2016 Sep;84:14-26. doi: 10.1016/j.brat.2016.07.001. Epub 2016 Jul 7.

    PubMed 27423374
  • Eysenbach G; CONSORT-EHEALTH Group. CONSORT-EHEALTH: improving and standardizing evaluation reports of Web-based and mobile health interventions. J Med Internet Res. 2011 Dec 31;13(4):e126. doi: 10.2196/jmir.1923.

    PubMed 22209829
  • Mattick RP, Clarke JC. Development and validation of measures of social phobia scrutiny fear and social interaction anxiety. Behav Res Ther. 1998 Apr;36(4):455-70. doi: 10.1016/s0005-7967(97)10031-6.

    PubMed 9670605
  • Spitzer RL, Kroenke K, Williams JB. Validation and utility of a self-report version of PRIME-MD: the PHQ primary care study. Primary Care Evaluation of Mental Disorders. Patient Health Questionnaire. JAMA. 1999 Nov 10;282(18):1737-44. doi: 10.1001/jama.282.18.1737.

    PubMed 10568646
  • Spitzer RL, Kroenke K, Williams JB, Lowe B. A brief measure for assessing generalized anxiety disorder: the GAD-7. Arch Intern Med. 2006 May 22;166(10):1092-7. doi: 10.1001/archinte.166.10.1092.

    PubMed 16717171
  • Ware J Jr, Kosinski M, Keller SD. A 12-Item Short-Form Health Survey: construction of scales and preliminary tests of reliability and validity. Med Care. 1996 Mar;34(3):220-33. doi: 10.1097/00005650-199603000-00003.

    PubMed 8628042
  • Attkisson CC, Zwick R. The client satisfaction questionnaire. Psychometric properties and correlations with service utilization and psychotherapy outcome. Eval Program Plann. 1982;5(3):233-7. doi: 10.1016/0149-7189(82)90074-x.

    PubMed 10259963
  • Andersson G, Carlbring P, Furmark T; S. O. F. I. E. Research Group. Therapist experience and knowledge acquisition in internet-delivered CBT for social anxiety disorder: a randomized controlled trial. PLoS One. 2012;7(5):e37411. doi: 10.1371/journal.pone.0037411. Epub 2012 May 23.

    PubMed 22649526
  • Watson D, Friend R. Measurement of social-evaluative anxiety. J Consult Clin Psychol. 1969 Aug;33(4):448-57. doi: 10.1037/h0027806. No abstract available.

    PubMed 5810590
  • American Psychiatric Association. (2000). DSM-IV: Diagnostic and Statistical Manual of Mental Disorders (4th). Author.

  • Clark, D. M., & Wells, A. (1995). A cognitive model of social phobia. In R. G. Heimberg, M. R. Liebowitz, D. Hope, & F. Schneider (Eds.), Social Phobia: Diagnosis, Assessment, and Treatment (pp. 69-93). Guilford Press.

  • Ladwig, I., Rief, W., & Nestoriuc, Y. (2014). What Are the Risks and Side Effects of Psychotherapy? - Development of an Inventory for the Assessment of Negative Effects of Psychotherapy (INEP). Verhaltenstherapie, 24(4), 252-263. https://doi.org/0.1159/000367928

  • Wells, A., Stopa, L., & Clark, D. M. (1993). The social cognitions questionnaire. Unpublished, Department of Psychiatry, University of Oxford, Warnerford Hospital, Oxford, UK.

Questions about this trial

What is this clinical trial studying?

A study testing Exposure, Attention Training and Cognitive Restructuring in people with Social Anxiety Disorder (Social Phobia), run by University of Bern at 1 site in Switzerland.

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 7 inclusion and 3 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 16 May 2024. 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 Switzerland. 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?

Change on social anxiety symptoms at post-treatment (time frame: Baseline, Mid-treatment (4 weeks after baseline), Post-treatment (8 weeks after baseline)). 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 NCT04879641, which also lists 19 linked publications.

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 16 May 2024.

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