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CompletedNCT03061448Updated Aug 22, 2017

Internet-based Exposure Therapy for Panic Disorder

An interventional study of Internet-based cognitive-behavior therapy in Panic Disorder With Agoraphobia, sponsored by Karolinska Institutet. Completed at 1 site in Sweden. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2017-08-22.

Sponsored by Karolinska Institutet · Not applicable, Interventional, and Treatment

Phase
Not applicable
Study type
Interventional
Enrollment
61
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

The purpose of this study is examine if an internet-based exposure therapy based on inhibitory learning is feasible, acceptable and effective in reducing panic symptoms amongst patients who suffer from panic disorder and agoraphobia.

Read the detailed description

Trial objectives: Primary objective is to examine if an internet-based exposure therapy based on inhibitory learning is effective in reducing panic symptoms. The secondary objective is to study if the protocol is feasible and acceptable. Secondary objective is measured is examined on 1) number of participants completing the study protocol, 2) participants' satisfaction with the treatment, 3) therapists' ratings of acceptability. The aim of this study is to assess the feasibility, and pilot the design and delivery of a RCT that will subsequently form the framework for a larger RCT to evaluate the effectiveness of an exposure protocol based on inhibitory learning.

Trial Design: Randomized controlled pilot study with two groups randomly assigned to either Internet-based exposure therapy based on the principles of inhibitory learning or Internet-based exposure therapy based on the principles of habituation Duration: Eight weeks Primary Endpoint: Change in panic symptoms from baseline to Week 8. Efficacy Parameters: Panic Disorder Severity Scale - Self rated (PDSS-SR) Safety Parameters: Adverse Events is assessed weekly via the internet. Description of Trial Subjects: Patients > 18 years old with a PDSS-SR score more than 6 points Number of Subjects: 80

02

Conditions studied

  • Panic Disorder With Agoraphobia
03

In context

Panic Disorder

250 studies on the registry are indexed under Panic Disorder; 35 are open to participants now.

This study's enrollment of 61 is below the median of 80 across 195 interventional studies indexed under Panic Disorder.

Browse Panic Disorder studies →

Lead sponsor

Karolinska Institutet is the lead sponsor of 1,113 studies on the registry; 267 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Outpatients
  • ≥ 18 years
  • Situated in Sweden
  • Informed consent
  • Panic Disorder Severity Scale - self rated score more than 6 points

Exclusion criteria

Exclusion Criteria:

  • Substance dependence during the last six months
  • Post traumatic stress disorder, bipolar disorder or psychosis
  • Symptoms better explained by axis 2 diagnosis (e.g. autism or borderline personality disorder)
  • MADRS-S score above 25 points
  • Psychotropic medication changes within one months prior to treatment that could affect target symptoms.
  • Received exposure based Cognitive behavior therapy (CBT) for pathological worry the last 2 years
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
61 participants (actual)

Study arms

  • Experimental
    Inhibitory learning based treatment

    The experimental group will go through Internet-based treatment. The exposure treatment is 8 weeks long and based on the principles of inhibitory learning, i.e. the participant is instructed to stay in the frightening situation until his/her expectancy has been maximally violated.

    Behavioral: Internet-based cognitive-behavior therapy

  • Active comparator
    Habituation based treatment

    The active comparator group will also go through Internet-based treatment. The exposure treatment is 8 weeks long and based on the principles of emotional processing theory, i.e. the participant is instructed to stay in the frightening situation until anxiety has declined (habituated).

    Behavioral: Internet-based cognitive-behavior therapy

Interventions

  • BehavioralInternet-based cognitive-behavior therapy

    Internet-based cognitive-behavior therapy on a safe internet platform. Treatment is divided into eight modules, each containing homework assignments . The participants will be assigned a therapist that they can contact through a message system in the platform and expect answer within 24 hours.

06

What researchers measure

Primary outcomes

  1. Panic Disorder Severity Scale - Self rated (PDSS-SR)

    Change in panic symptoms from baseline to Week 8

    Time frame: Week 0, Week 8

Secondary outcomes

  1. Credibility/Expectancy Questionnaire (CEQ)

    Measuring treatment expectancy and rationale credibility for use in clinical outcome studies

    Time frame: Week 2

  2. Client Satisfaction Questionnaire (CSQ)

    To assess client satisfaction with treatment

    Time frame: Week 8

  3. Adverse events scale

    To assess any adverse events caused by the treatment

    Time frame: Week 8

  4. Patient Health Questionnaire (PHQ-9)

    Change in depression from baseline to Week 8

    Time frame: Week 0, Week 8

  5. Anxiety Sensitivity Index (ASI)

    Change in fear of anxiety-related physical sensations

    Time frame: Week 0, Week 8

  6. Agoraphobic Cognitions Questionnaire (ACQ)

    Change in fear of fear in agoraphobics

    Time frame: Week 0, Week 8

  7. Body Sensations Questionnaire (BSQ)

    Change in fear of bodily sensations in agoraphobics

    Time frame: Week 0, Week 8

  8. Brunnsviken Quality of Life Questionnaire (BBQ)

    Change in self-perceived quality of life from baseline to week 8

    Time frame: Week 0, Week 8

  9. WHO Disability Assessment Schedule 2.0 (WHODAS 2.0)

    Change in functioning and disability

    Time frame: Week 0, Week 8

  10. Generalised Anxiety Disorder Assessment (GAD-7)

    Screening tool and severity measure for generalised anxiety disorder

    Time frame: Week 0, Week 8

  11. The Cardiac Anxiety Questionnaire (CAQ)

    Change in heart-focused anxiety from baseline to week 8

    Time frame: Week 0, Week 8

  12. HA-NI-SSD Symptom Preoccupation Scale - testversion (SPSt)

    Change in preoccupation of symptoms from baseline to week 8

    Time frame: Week 0, Week 8

07

Study locations

1 site
  • Karolinska Institutet
    Stockholm, 17177, Sweden
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Aug 22, 2017, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT03061448
Lead sponsor
Karolinska Institutet
Responsible party
Erik Andersson (PhD, psychologist, Karolinska Institutet) — Principal investigator
First posted
Feb 23, 2017
Start date
Feb 1, 2017
Primary completion
Jun 1, 2017
Completion
Jun 1, 2017
Last update
Aug 22, 2017

Study contacts

Erik M Andersson, PhD
principal investigator · Karolinska Institutet

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Aug 2017. You cannot join it, but the record below documents what was studied.

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