Behavior Therapy Clinical Trial
Official title:
Therapy Labs: To Improve Adherence in Internet Based Psychotherapy
This project aims to investigate factors that are important in affecting adherence in internet based Cognitive Behavior Therapy (CBT). It is hypothesized that two intervention-specific variables, Support and Content, are important factors and that maximizing the impact of these would result in improved adherence and potentially in the end also better outcome for participants in internet interventions.
This study centers on people with mild symptoms of stress or worry. Participants are
recruited by advertisement and the web. Potential participants are contacted by phone and
informed about the study. Written informed consent is collected through mail from those who
are interested in participating. They are asked to answer all the instruments of the study
via a secure internet portal used for delivering the intervention. If they do not fulfill
the exclusion criteria they are randomized to one of four conditions. When the intervention
has ended participants are asked to fill out all the instruments and again at four week
follow up. To find significant (p<.05) results on the primary outcome variables with
estimated medium effect sizes, pair-wise comparisons, a power of .80 and allowing for 10%
attrition, forty participants are needed in each condition.
The intervention used in this project will be a standard program of applied relaxation that
has been used and empirically tested in previous clinical studies. Since the aim of the
present project is to investigate factors that affect adherence rather than the intervention
effect, the investigators will use a well tested intervention with known effects on symptoms
of stress and anxiety. Previous studies have shown that self help with applied relaxation
can have a positive effect on for example stress, anxiety and sleep. By providing an
intervention that is beneficial, credible and relevant for people with mild symptoms of
stress and anxiety it would be possible to investigate how manipulating different factors of
the intervention affects the adherence. Applied relaxation will in this intervention consist
of a four-week program provided via the Internet. The exact composition of the intervention
will be slightly different in each condition depending on the research question, see below.
The program includes four steps; tension sensitivity training, long relaxation, short
relaxation and applied relaxation. Each week includes information, assignments and support
via the secure internet portal.
;
Allocation: Randomized, Intervention Model: Factorial Assignment, Masking: Single Blind (Subject)
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