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CompletedNCT00004834Updated Feb 21, 2013

Randomized Study of Cognitive-Behavioral Therapy vs Imipramine and Their Combination for Panic Disorder

An interventional study of imipramine and cognitive-behavioral therapy in Panic Disorder, sponsored by Northwell Health. Completed. Open to participants aged 18 Years to 64 Years. Per ClinicalTrials.gov, last updated 2013-02-21.

Sponsored by Northwell Health · Not applicable, Interventional, and Treatment

Phase
Not applicable
Study type
Interventional
Enrollment
326
Allocation
Randomized
Ages
18 Years to 64 Years
Sex
All
01

Study summary

OBJECTIVES:

I. Determine which treatment is most effective for patients with panic disorder: cognitive-behavioral therapy (CBT) plus imipramine (IMI), CBT plus placebo, CBT alone, IMI alone, or placebo alone.

Read the detailed description

PROTOCOL OUTLINE: This is a randomized, double-blind, placebo-controlled study. Patients are randomized to receive one of five treatments: cognitive-behavioral therapy (CBT) alone, imipramine plus medical management (IMI), CBT plus IMI, pill placebo plus medical management (PLA), or CBT plus PLA.

Patients are seen by therapists for 11 sessions over 12 weeks (3 sessions during days 1-10 followed by 6 weekly sessions and 2 biweekly sessions). Each CBT session lasts approximately 1 hour, each IMI session lasts approximately 30 minutes, and patients in combined treatment see 2 therapists for a total of about 80 minutes. Oral IMI or placebo is taken daily.

Patients not responding to placebo or IMI after the initial 12 weeks are offered alternative treatment for up to 3 months or given a referral; responders continue to be treated monthly for the next 6 months. This is followed by a washout period of 6 months, after which patients receive final assessment. All therapy and assessment sessions are video- or audiotaped.

Patients are interviewed by an independent evaluator at the start of treatment and 3, 9, and 15 months later, and must keep a set of weekly self-monitoring forms. In addition, patients complete rating forms and questionnaires, and undergo carbon dioxide measurement at the start of treatment and 3, 9, and 15 months later.

At study conclusion, patients are told which medication they received and receive treatment recommendations.

02

Conditions studied

  • Panic Disorder

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Keywords

  • anxiety disorder
  • disease-related problem/condition
  • neurologic and psychiatric disorders
  • panic disorder
  • rare disease
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 326 is above the median of 80 across 195 interventional studies indexed under Panic Disorder.

Browse Panic Disorder studies →

Lead sponsor

Northwell Health is the lead sponsor of 463 studies on the registry; 109 are open to participants now.

Of its 40 completed or terminated interventional studies of FDA-regulated products, 20 (50%) have results posted.

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

04

Who can participate

Ages eligible
18 Years to 64 Years
Sexes eligible
All
Accepts healthy volunteers
No

Eligibility criteria

PROTOCOL ENTRY CRITERIA:

--Disease Characteristics--

  • Principal diagnosis of panic disorder with or without mild agoraphobia, confirmed using the Anxiety Disorders Interview Schedule-Revised
  • At least one full or limited panic attack per week within 2 weeks prior to initial assessment and 2 weeks prior to treatment

--Prior/Concurrent Therapy--

  • Drug washout required if on anxiolytic or antidepressant medication No more than 10 benzodiazepine doses (0.5 mg alprazolam equivalent) within 2 weeks prior to treatment No more than 20 doses of benzodiazepine during baseline and acute treatment combined No more than one dose of benzodiazepine per day permitted
  • No concurrent competing treatment

--Patient Characteristics--

  • Not pregnant Negative serum pregnancy test required Effective contraception required of fertile women No psychotic, bipolar, or significant medical illnesses Not suicidal No significant substance abuse No prior nonresponse to either study treatment or related treatments No concurrent disability claims
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Masking
Double
Enrollment
326 participants

Interventions

  • Drugimipramine
  • Behavioralcognitive-behavioral therapy
06

Study locations

No study locations are listed for this record.

07

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Feb 21, 2013, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
08

Registry details

Key details

Study ID
NCT00004834
Lead sponsor
Northwell Health
Collaborators
National Institute of Mental Health (NIMH), Long Island Jewish Medical Center
Responsible party
Sponsor
First posted
Feb 25, 2000
Start date
May 1998
Primary completion
Jun 2005
Completion
Jun 2005
Last update
Feb 21, 2013

Study contacts

Jack M. Gorman
study chair · Long Island Jewish Medical Center
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Feb 2013. You cannot join it, but the record below documents what was studied.

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