Improving cognitive behavioural therapy for panic by identifying the active ingredients and understanding the mechanisms of action: a multicentre study

ISRCTN ISRCTN80046034
DOI https://doi.org/10.1186/ISRCTN80046034
Secondary identifying numbers 040203-17
Submission date
15/12/2006
Registration date
21/02/2007
Last edited
22/10/2021
Recruitment status
No longer recruiting
Overall study status
Completed
Condition category
Mental and Behavioural Disorders
Prospectively registered
Protocol
Statistical analysis plan
Results
Individual participant data

Plain English Summary

Not provided at time of registration

Study website

Contact information

Prof Dr Hans-Ulrich Wittchen (PI) / Mr Thomas Lang
Scientific

Technische Universität Dresden
Institute for Clinical Psychology and Psychotherapy
Chemnitzer Str. 46
Dresden
01187
Germany

Phone +49 (0)351 463 369 72
Email lang@psychologie.tu-dresden.de

Study information

Study designRandomised clinical trial, intervention study with two active arms and a wait-list control group
Primary study designInterventional
Secondary study designRandomised controlled trial
Study setting(s)Not specified
Study typeTreatment
Participant information sheet Not available in web format, please use the contact details below to request a patient information sheet
Scientific titleImproving cognitive behavioural therapy for panic by identifying the active ingredients and understanding the mechanisms of action: a multicentre study
Study hypothesisCognitive Behavioural Therapy (CBT) is effective in the psychological treatment of Panic Disorder (PD) and Agoraphobia (AG). However, CBT refers to a heterogeneous group of interventions, including psychoeducation, cognitive restructuring and exposure. The main active ingredients of CBT for panic disorder are yet not determined. Although exposure components appear essential to effective treatment of PD/AG, the debate related to the duration and format of exposure persist.

The current study compares two formats of a manualised CBT for panic disorder that differ only in the implementation of exposure therapy:
1. CbT refers to an exposure homework (only) condition; the therapist only assigns exposure.
2. cBT refers to exposure that is therapist-guided; the therapist will accompany the patients in the exposure situation.

Hypotheses are:
1. Both Cognitive Behavioural Therapy (CBT) groups will be significantly superior to the wait-list control group in all primary outcome measures.
2. The “in-vivo-cBT" group will be significantly better than the “only-CbT” group at post-treatment and at follow-up.
Ethics approval(s)The study was approved by the Ethics Committee of the Medical Faculty, Technical University Dresden on the 1st December 2006 (ref: EK 164082006).
ConditionPanic disorder with and without agoraphobia
InterventionTwo treatment conditions are compared, both of them state-of-the-art-CBT:
Condition A: CBT for panic disorder with therapist-guided in-vivo exposure exercises (in-vivo cBT-group)
Condition B: CBT for panic disorder with exposure elements as an homework assignment, only (only-CbT group)
Intervention typeOther
Primary outcome measure1. Number of panic attacks/month
2. Aggregated Panic Disorder Scale and Mobility Inventory (PDS-MI) score (panic severity plus avoidance)
3. Hamilton Anxiety Rating Scale
Secondary outcome measures1. Depressive symptoms
2. Anticipatory anxiety in dark room-challenge and time in darkroom
3. Psychophysiological parameters
4. Neuroimaging parameters
5. Ecological Momentary Assessment (EMA) parameters
Overall study start date01/05/2007
Overall study end date01/02/2008

Eligibility

Participant type(s)Patient
Age groupAdult
Lower age limit18 Years
SexNot Specified
Target number of participants450 (375 completers)
Participant inclusion criteria1. Outpatients
2. 18 to 65 years old
3. Meet current Diagnostic and Statistical Manual of Mental Disorders - Fourth Edition (DSM-IV) criteria of panic disorder with/without agoraphobia
4. Hamilton Anxiety Scale (HAMA) score more than or equal to 18 and a Clinical Global Impressions scale (CGI) score more than or equal to four
5. Able to attend clinic on his/her own or accompanied by significant others
6. Informed consent to participate and follow study procedures
Participant exclusion criteria1. DSM-IV Axis I diagnoses of any psychotic disorder, bipolar disorder, current alcohol or drug dependence and Axis II of borderline personality disorder
2. DSM-IV Axis I disorders (other than panic disorder and agoraphobia) currently treated either by medications or non-pharmacological intervention
3. Acute suicidality (Composite International Diagnostic Interview [CIDI] scale 2+)
4. General medical contraindications
Recruitment start date01/05/2007
Recruitment end date01/02/2008

Locations

Countries of recruitment

  • Germany

Study participating centre

Technische Universität Dresden
Dresden
01187
Germany

Sponsor information

German Federal Ministry of Education and Research (Bundesministerium Für Bildung und Forschung [BMBF]) (Germany)
Government

Heinrich-Konen-Str. 1
Bonn
53227
Germany

Phone +49 (0)228 3821 118
Email detlef.boecking@dlr.de
Website http://www.bmbf.de/en/index.php
ROR logo "ROR" https://ror.org/04pz7b180

Funders

Funder type

Government

German Federal Ministry of Education and Research (Bundesministerium Für Bildung und Forschung [BMBF]) (Germany) (ref: 01GV0615)

No information available

Results and Publications

Intention to publish date
Individual participant data (IPD) Intention to shareNo
IPD sharing plan summaryNot provided at time of registration
Publication and dissemination planNot provided at time of registration
IPD sharing planNot provided at time of registration

Study outputs

Output type Details Date created Date added Peer reviewed? Patient-facing?
Protocol article protocol 01/11/2009 Yes No
Results article results 01/06/2011 Yes No
Results article additional results regarding the impact of depression on CBT 01/06/2012 Yes No
Results article results 01/01/2013 Yes No
Results article results 01/01/2020 09/03/2021 Yes No
Results article 12/04/2021 14/04/2021 Yes No
Results article 16/09/2020 22/10/2021 Yes No

Editorial Notes

22/10/2021: Publication reference added.
14/04/2021: Publication reference added.
09/03/2021: Publication reference added.