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RCT of Cognitive Therapy, Paroxetine, Combined CT and Paroxetine and Placebo

A Randomised, Triple Blind, Placebo-controlled Trial Comparing the Effects of Cognitive Therapy, Paroxetine and Both Cognitive Therapy and Paroxetine in the Treatment of Patients With Primary Social Phobia

Status
Completed
Phases
Phase 4
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00184106
Enrollment
86
Registered
2005-09-16
Start date
2004-10-31
Completion date
2010-12-31
Last updated
2018-08-27

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Phobic Disorders

Keywords

Phobic disorders, Therapy, cognitive, Paroxetine

Brief summary

We aim to (1) evaluate the effectiveness of cognitive therapy and paroxetine and their combination, (2) investigate the patterns of change and the mechanisms of action involved during treatment by using psycho-physiological assessments in order to delineate some of the cognitive, behavioural and physiological mechanisms in the patients' response to CT, to paroxetine and placebo.One hundred patients with a primary diagnosis of social phobia will be selected and randomised into four treatment conditions. The first group (N=25) will be treated with CT alone, the second group (N=25) with CT plus paroxetine, the third group (N=25) with paroxetine and clinical management (TAU), the fourth group will receive placebo and clinical management (N=25). All patients will have 12 weeks of treatment in the acute phase, which includes 12 sessions of individual treatment for the two first groups. The 2nd and 3rd groups will in addition have 12 weeks of drug treatment in the maintenance phase. The 4th group will have placebo for 24 weeks and clinical management. The patients will be assessed at pre-treatment, at 12 weeks and at the end of treatment of the acute phase (12 weeks) and by the end of maintenance phase (24 weeks). Follow-up will be at 6 and 12 months. Measures are based on all three main sources; self-report inventories, clinical assessments by independent raters and psycho-physiological assessments.

Interventions

DRUGSeroxat, Cognitive therapy, Seroxat+ cognitive therapy

Seroxat was administered over 24 weeks 20-50 mg/d, and Cognitive therapy was provided over 12 weeks. The patients were assessed at pre, post and 1 yrs follow up

Sponsors

St. Olavs Hospital
CollaboratorOTHER
Norwegian University of Science and Technology
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
FACTORIAL
Primary purpose
TREATMENT
Masking
TRIPLE (Subject, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
18 Years to 65 Years
Healthy volunteers
No

Inclusion criteria

1. Signed written informed consent obtained prior to entry in the study. 2. Diagnosed with primary social phobia, generalized or specific (DSM-IV, APA, 1994). 3. Symptoms present at least one year. 4. Age between 18-65 years.

Exclusion criteria

1. Known somatic diseases. 2. Pregnant (\*) or lactating women. 3. Psychosis 4. Acute suicidal symptoms 5. Major depressive disorder 6. Generalized Anxiety Disorder or PTSD 7. Cluster A or cluster B personality disorder 8. Substance abuse or dependence 9. Body dysmorphic disorder. 10. Not willing to accept random allocation. 11. Patients who take some form of SSRI medications currently or during the last 6 months 12. Patients not willing to withdraw psychotropic medication for a period of 4 weeks prior to entry to the trial or are taking herbal remedies that may be hazardous or inflict treatment response.

Design outcomes

Primary

MeasureTime frame
The proportion responders as measured by FAIR OF NEGATIVE EVALUATION and SPAI at 12 and 24 week.December 2010
A patient is classified as responder if the decrease on FNE is equivalent with or above 40%.December 2010

Secondary

MeasureTime frame
Relapse rate during 6 and 12 months of follow up.December 2010

Countries

Norway

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026