Panic Disorder Clinical Trial
Official title:
Internet-based Self-help Treatment for Panic Disorder: A Randomised Controlled Trial of Two Ways of Administrating the Complementary Psychological Support (Scheduled vs. Non-scheduled)
The aim of this study was to compare two ways of administrating the complementary
psychological support (scheduled vs. non-scheduled) in an online self-help program for panic
disorder. In order to do so, the investigators studied: a) If there were differences in the
intensity and frequency of the symptoms of panic disorder. b) If there were differences in
the therapeutic adherence between the subjects receiving both kinds of complementary
support. c) If the more time spent by a psychologist in therapeutic interventions produced
the best results of therapeutic adherence / symptom improvement.
Seventy seven subjects followed the online self-help program for 8 weeks; 27 subjects had
the support of a therapist via phone when they required it, 25 subjects had the support of a
therapist weekly and 25 subjects were in the waiting list as a control group.
The aim of this study was to compare two ways of administrating the complementary
psychological support (scheduled vs. non-scheduled) in an online self-help program for panic
disorder. In order to do so, the investigators studied: a) If there were differences in the
intensity and frequency of the symptoms of panic disorder. b) If there were differences in
the therapeutic adherence between the subjects receiving both kinds of complementary
support. c) If the more time spent by a psychologist in therapeutic interventions produced
the best results of therapeutic adherence / symptom improvement.
Treatment program
Internet-based self-help program for anxiety disorders "FREE OF ANXIETY" was developed,
based on cognitive behavioral therapy. The program is presented as an interactive course,
which is divided into eight weekly modules.A number of therapeutic components are used:
psychological education (modules 1-8), behavioral analysis (safety and avoidance behavior)
(module 2), in vivo and interoceptive exposure (modules 2-8), relaxation training and
diaphragmatic breathing (modules 1-4), cognitive restructuring (modules 4-5), mindfulness
(Module 6) communication training (module 7), problem solving Module 8). The program also
includes a messaging system between therapists and subjects.
Participants and Procedure
The participants were recruited using a google banner linked to searches about anxiety
disorders. The individuals were redirected to a Web page which contained information about
anxiety disorders and the aims of the study. Suicide risk (score of 3 in the 15th item of
the Web Screening Questionnaire) was established as an exclusion criterion. The study was
approved by the ethics committee of the Autonomous University of Barcelona.
Applicants completed the informed consent, the demographic questionnaire and a screening
questionnaire online. One week later a psychologist who had been trained to apply the MINI
International Neuropsychiatric Interview (Sheehan, Lecrubier, Harnett-Sheehan,
Janavs,Weiller, Bonora, et al., 1997) assessed the presence of a current psychiatric
diagnosis. Participants with Panic Disorder completed a battery of self-reported measures in
order to assess panic disorder, anxiety, and depression symptoms.
After clinical evaluation, the participants were divided into three groups by a true
random-number service.
The data collected were anonymized and coded
Seventy seven subjects followed the online self-help program for 8 weeks; 27 subjects had
the support of a therapist via phone when they required it, 25 subjects had the support of a
therapist weekly and 25 subjects were in the waiting list as a control group.
Participants completed self-reported measures at the end of the treatment, and six months
later.
Statistical analyses
The investigators studied differences between participants with and without Panic Disorder
regarding their gender and age, using Chi-square test and Student t-test.
The participants' pretreatment and posttreatment measures were analyzed with analysis of
variance (ANOVA) with repeated measures. These were followed by t tests with
Bonferroni-corrected p values. Effect sizes were calculated both within and between groups,
and all calculations were based on the pooled standard deviation, Cohen's d.
All analyses were conducted using SPSS version 22 for Windows.
;
Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Outcomes Assessor), Primary Purpose: Treatment
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