Depression Clinical Trial
Official title:
How Confidence in Prior Attitudes, Social Tag Popularity, and Source Credibility Shape Confirmation Bias Toward Antidepressants and Psychotherapy in a Representative German Sample: Randomized Controlled Web-Based Study
Verified date | March 2019 |
Source | Leibniz-Institut für Wissensmedien |
Contact | n/a |
Is FDA regulated | No |
Health authority | |
Study type | Interventional |
The study examines whether people primarily want to confirm their prior attitudes in health-related information search, in an online environment using social tags for navigation. Participants were looking for information on the treatment of depression with antidepressants and psychotherapy. They were randomly assigned to two groups with either high or low credibility of the community who provides social tags, and two groups where participants' confidence in prior attitudes was heightened or lowered, and to two groups where either antidepressant tags were more popular or psychotherapy was more popular. The investigators measured attitude change toward the treatments and also navigation behavior.
Status | Completed |
Enrollment | 520 |
Est. completion date | November 14, 2014 |
Est. primary completion date | November 14, 2014 |
Accepts healthy volunteers | Accepts Healthy Volunteers |
Gender | All |
Age group | 18 Years to 60 Years |
Eligibility |
Inclusion Criteria: Online Population - Internet Browser, Representative Sample of Germans with respect to age and region Exclusion Criteria: No Internet Browser |
Country | Name | City | State |
---|---|---|---|
n/a |
Lead Sponsor | Collaborator |
---|---|
Leibniz-Institut für Wissensmedien |
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Attitudinal Preference Score of Psychotherapy over Antidepressants | The investigators constructed a questionnaire to measure the attitudinal preference of psychotherapy over antidepressant treatments of depressive disorders. On a 7-point likert scale, participants rate the degree of efficacy of antidepressant and psychotherapy treatments, on 8 items (e.g. item 1: "Antidepressants/Psychotherapy are/is effective in treating depression."). An index score for the degree of preference of psychotherapy is calculated by subtracting the average antidepressants score from the average psychotherapy treatment rating score for each participant. To analyse if attitudinal preferences predict the number of clicks on social tags and blog posts, the treatment preference score is entered in a logistic regression as predictor. Ratings are inquired at the beginning of the 1 hour study (prior attitudes), and at the end of the study (attitude change). | Through study completion, an average of 1 hour. Prior to and after information search phase in the study. | |
Primary | Count of clicks on antidepressant and psychotherapy treatment tags | Both, psychotherapy and antidepressant tags can be clicked on, and are counted respectively. An index score will be calculated for each participant subtracting the sum of clicks on antidepressants from the sum of clicks on psychotherapy, to analyse if clicks are associated with the treatment preference measured by prior treatment attitudes. | Through study completion, an average of 1 hour. During the information search phase in the study. | |
Primary | Count of clicks on antidepressant and psychotherapy treatment blog posts | Both, psychotherapy and antidepressant blog posts can be clicked on, and are counted respectively. An index score will be calculated for each participant subtracting the sum of clicks on antidepressants from the sum of clicks on psychotherapy, to analyse if clicks are associated with the treatment preference measured by prior treatment attitudes. | Through study completion, an average of 1 hour. During the information search phase in the study. |
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