A randomized, prospective, multicenter study of the effective treatments of panic disorder: cognitive behavioral therapy versus antidepressants versus combination therapy

ISRCTN ISRCTN08156869
DOI https://doi.org/10.1186/ISRCTN08156869
Secondary identifying numbers N/A
Submission date
19/07/2006
Registration date
19/07/2006
Last edited
15/01/2015
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 of protocol

Not provided at time of registration

Contact information

Ms Franske J. Apeldoorn van
Scientific

University Medical Center Groningen
P.O. Box 30.001
Groningen
9700 RB
Netherlands

Email f.j.van.apeldoorn@psy.umcg.nl

Study information

Study designA randomized, prospective, multicenter study
Primary study designInterventional
Secondary study designRandomised controlled trial
Study setting(s)Not specified
Study typeTreatment
Scientific titleA randomized, prospective, multicenter study of the effective treatments of panic disorder: cognitive behavioral therapy versus antidepressants versus combination therapy
Study acronymPD-study
Study objectivesIn the short-term, the combined treatment is expected to be superior to either mono-treatment. In the long-term, it is expected that cognitive behavioral therapy (CBT) will prove to be more durable and that patients taking selective serotonin reuptake inhibitor (SSRI) will require more mental health care during the one-year follow-up period.
Ethics approval(s)Not provided at time of registration
Health condition(s) or problem(s) studiedPanic disorder
InterventionCBT: the CBT protocol is based on the work of Clark and Barlow. Patients in the CBT group received up to 21 CBT sessions each lasting approximately 50 minutes. From session 16 onwards, sessions were scheduled with five-week intermissions. CBT consisted of the following:
1. Interoceptive exposure
2. Cognitive therapy
3. Exposure-in-vivo

SSRI group: patients receiving an SSRI visited their therapist 12 times, with weekly sessions during the first month and the remaining sessions distributed evenly over the treatment period of one year. Each visit lasted approximately 20 minutes. SSRIs used: fluvoxamine, sertraline, citalopram, fluoxetine, and cipramil. Tapering started three months before post-test.

Combination therapy of CBT and SSRI group: patients received both treatments, delivered in a parallel manner by different therapists.
Intervention typeDrug
Pharmaceutical study type(s)
PhaseNot Specified
Drug / device / biological / vaccine name(s)Fluvoxamine, sertraline, citalopram, fluoxetine, cipramil
Primary outcome measureShort-term:
1. Hamilton anxiety
2. Hamilton depression
3. Frequency of panic attacks
4. Responder status
5. Symptom checklist-90 (SCL-90)
6. Fear questionnaire-subscale
7. Agoraphobia

Long-term:
1. Remitter status
2. Panic coping
3. Quality of life
4. Hamilton anxiety
5. Hamilton depression
Secondary outcome measures1. Treatment satisfaction
2. Locus of control
3. Fear of bodily sensations
4. Anticipation anxiety
5. Negative and positive self statements
Overall study start date01/01/2001
Completion date01/01/2006

Eligibility

Participant type(s)Patient
Age groupAdult
SexBoth
Target number of participants150
Key inclusion criteriaPatients suffering from a primary diagnosis of panic disorder (PD) with or without agoraphobia (AG) (according to Diagnostic and Statistical Manual of mental disorders [DSM-IV] classification) recruited in 11 treatment facilities throughout the Netherlands between 1 April 2001 and 1 October 2003.
Key exclusion criteria1. Comorbid psychotic disorder
2. Drug dependence
3. Major affective disorder
4. Significant risk of suicidality
5. Pregnancy or lactation
6. Contraindications to either treatment modality
Date of first enrolment01/01/2001
Date of final enrolment01/01/2006

Locations

Countries of recruitment

  • Netherlands

Study participating centre

University Medical Center Groningen
Groningen
9700 RB
Netherlands

Sponsor information

University Medical Center Groningen (UMCG) (The Netherlands)
University/education

P.O. Box 30001
Groningen
9700 RB
Netherlands

ROR logo "ROR" https://ror.org/03cv38k47

Funders

Funder type

Research organisation

Netherlands Organisation for Health Research and Development (ZonMw)
Private sector organisation / Other non-profit organizations
Alternative name(s)
Netherlands Organisation for Health Research and Development
Location
Netherlands

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 plan

Study outputs

Output type Details Date created Date added Peer reviewed? Patient-facing?
Results article results 05/09/2013 Yes No
Results article results 01/04/2014 Yes No