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Status unknownNCT03885453Updated Mar 21, 2019

Construction of a Questionnaire on Panic Disorder and Agoraphobia

An observational study in Panic Disorder, Panic Disorder With Agoraphobia and Agoraphobia, sponsored by Ulrike Willutzki. Status unknown at 1 site in Germany. Per ClinicalTrials.gov, last updated 2019-03-21.

Sponsored by Ulrike Willutzki · Observational

The sponsor has not verified this record recently (last verified Mar 2019), so the status shown — last known as Recruiting — may be out of date.
Study type
Observational
Model
Case-only
Time perspective
Cross-sectional
Enrollment
500
Sex
All
01

Study summary

For the first time panic disorder and agoraphobia are included as separate disorders in the DSM-5. Thus, agoraphobia no longer represents a subcategory of panic disorder. To diagnose both of the disorders, questionnaires are the method of choice. However, there are no measuring instruments available free of charge in German-speaking countries. In order to improve this situation, the Witten Panic Disorder Questionnaire (WPF) and the Witten Agoraphobia Questionnaire (WAF) are constructed in accordance with the DSM-5 criteria. Both measuring instruments are included as a part of a ten instrument battery. WAF and WPF will be delivered to a patient sample of patients with panic disorder and/or agoraphobia as well as depressed patients (discriminant validity). Factor analyzes and item analyses will be conducted.

02

Conditions studied

  • Panic Disorder
  • Panic Disorder With Agoraphobia
  • Agoraphobia
  • Agoraphobia With Panic Attacks
  • Depression
03

In context

Panic Disorder

270 studies on the registry are indexed under Panic Disorder; 37 are open to participants now.

This study's planned enrollment of 500 is above the median of 200 across 50 observational studies indexed under Panic Disorder.

Browse Panic Disorder studies →

Lead sponsor

Ulrike Willutzki is the lead sponsor of 3 studies on the registry; none are open to participants now.

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

04

Who can participate

Ages eligible
Child (0–17), Adult (18–64), Older adult (65+)
Sexes eligible
All
Sampling method
Non-probability sample

Study population

Patients with Panic Disorder / Agoraphobia / Depression

Inclusion criteria

Panic Disorder / Agoraphobia / Depression diagnosis via diagnostic interview

Exclusion criteria

Exclusion Criteria:

-

05

Study design

Observational model
Case-only
Time perspective
Cross-sectional
Enrollment
500 participants (estimated)
Patient registry
No

Groups and cohorts

  • Panic Disorder / Agoraphobia

    Patients with Panic Disorder / Agoraphobia as major diagnosis

  • Depression

    Patients with Depression as major diagnosis

06

What researchers measure

Primary outcomes

  1. Wittener Panik Fragebogen (WPF)

    Self developed panic disorder questionnaire. Measures panic symptoms on one scale. Items are averaged. Range: 1-5. Higher values represent a worse outcome.

    Time frame: 5 min

  2. WAF

    Self developed agoraphobia questionnaire. Measures agoraphobia symptoms on two scales (Fear and Avoidance). Items are averaged to calculate the subscales. Range: 1-5 (Fear); 1-3 (Avoidance). Higher values represent a worse outcome.

    Time frame: 10 min

Secondary outcomes

  1. Agoraphobic Cognition Questionnaire (ACQ)

    Chambless et al. (1985); Ehlers et al. (1993). The questionnaire measures anxious thoughts on two scales: Loss of Control and Physical Concerns. Items are averaged to calculate the subscales. Range: 1-5. A total score is calculated by averaging all items. Higher values represent a worse outcome.

    Time frame: 5 min

  2. Body Sensations Questionnaire (BSQ)

    Chambless et al. (1985); Ehlers et al. (1993). The questionnaire measures body sensations that may occur in a feared situation. Items are averaged to calculate a total score. Range: 1-5. Higher values represent a worse outcome.

    Time frame: 5 min

  3. Mobility Inventory (MI)

    Chambless et al. (1985); Ehlers et al. (1993). The questionnaire measures avoidance of agoraphobic situations on two scales (Avoidance Alone and Avoidance Accompanied). Items are averaged to calculate the scales. Range: 1-5. Higher values represent a worse outcome.

    Time frame: 10 min

  4. Agoraphobic Self-Statements Questionnaire (ASQ)

    Hout et al. (2001). Measures agoraphobic statements on two scales (positive self-statements and negative self-statements). Items are averaged. Range: 0-4. Higher values represent a better outcome on the positive scale and a worse outcome on the negative scale.

    Time frame: 5 min

  5. Agoraphobic Cognitions Scale - extended version (ACS+)

    Hoffart et al. (1992). Measures fearful cognitions on three scales (fear of bodily incapacitation, fear of losing control, and fear of acting embarrassingly). Items are averaged to calculate the scales. Range: 0-4. Higher values represent a worse outcome.

    Time frame: 5 min

  6. Patient Health Questionnaire - D (PHQ-D) - Subscale Panic Syndrome

    Spitzer, Kroenke \& Williams (1999); Löwe et al. (2002). The questionnaire measures symptoms on modular scales. The panic syndrome subscale is calculated by summing up all 11 items. The scale ranges from 0 to 1. The sum score ranges from 0 to 11. Higher values represent a worse outcome.

    Time frame: 5 min

  7. Brief Symptom Inventory (BSI)

    Derogatis \& Melisaratos (1983); Franke (2000). Measures psychopathological symptoms on nine scales (Somatization, Obsessive-Compulsive, Interpersonal Sensitivity, Depression, Anxiety, Hostility, Phobic Anxiety, Paranoid Ideation, Psychoticism). Items are averaged to calculate the subscale scores. Range: 0-4. The Global Severity Index (GSI) is calculated by averaging all items. Higher values represent a worse outcome.

    Time frame: 10 min

  8. Beck Depression Inventory (BDI)

    Beck et al. (1961). Measures depressive symptoms on one scale. Items summed up to calculate the toal score. The scale ranges from 0 to 3. The sum score ranges from 0 to 63. Higher values represent a worse outcome.

    Time frame: 10 min

07

Study locations

1 of 1 sites recruiting
  • Witten/Herdecke University
    Witten, North Rhine-Westphalia 58455, Germany
    Recruiting
08

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Start is estimated for Mar 2019; primary completion for Dec 2022, 45 months later.

How these figures are worked out, and which studies are left out of them.

Registered
Dec 5, 2018
First posted
Mar 21, 2019
StartEst.
Mar 2019
Primary completionEst.
Dec 1, 2022
CompletionEst.
Dec 1, 2022
Last update
Mar 21, 2019
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Mar 21, 2019, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT03885453
Lead sponsor
Ulrike Willutzki
Responsible party
Ulrike Willutzki (Clinical Professor, University of Witten/Herdecke) — Sponsor-investigator
First posted
Mar 21, 2019
Start date
Mar 2019 (estimated)
Primary completion
Dec 1, 2022 (estimated)
Completion
Dec 1, 2022 (estimated)
Last update
Mar 21, 2019

Oversight

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

Not currently enrolling

This study is status unknown, as verified in Mar 2019. You cannot join it, but the record below documents what was studied.

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