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The study aimed to examine the feasibility, usability, user satisfaction, safety, and preliminary efficacy of a smartphone application intervention for young adults with subthreshold depression.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Smartphone Application | Experimental | SPSRS is a smartphone application system designed to improve self-confidence in individuals with subthreshold depression. The application presents a motion picture that displays words every 5 s for improving self-confidence of the user. |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Smartphone Application | Device | The participants use SPSRS to watch the motion picture for at least 10 min a day for 5 weeks. |
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| Measure | Description | Time Frame |
|---|---|---|
| Feasibility, as measured by adherence to the smartphone application intervention. | Adherence is calculated as the number of minutes in a week for which the participant uses the SPSRS application divided by the recommended weekly duration (70 min). | 5 weeks after initiating the intervention |
| Measure | Description | Time Frame |
|---|---|---|
| Usability and user satisfaction | USE Questionnaire | 5 weeks after initiating the intervention |
| Number of participants with treatment-related adverse events as assessed by Mini-International Neuropsychiatric Interview. |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Kazuki Hirao, PhD | Kibi International University | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Kibi International University | Takahashi | Okayama-ken | Japan |
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Mini-International Neuropsychiatric Interview
| baseline and 1, 2, 3, 4, and 5 weeks after initiating the intervention |
| Depressive symptoms | Center for Epidemiologic Studies Depression Scale score | baseline and 5 weeks after initiating the intervention |
| Inflammatory biomarker | Level of salivary interleukin-6 | baseline and 5 weeks after initiating the intervention |
| General self-efficacy | General Self-Efficacy Scale score | baseline and 5 weeks after initiating the intervention |
| Social anxiety | Liebowitz Social Anxiety Scale score | baseline and 5 weeks after initiating the intervention |
| Mental health | 12-item General Health Questionnaire score | baseline and 5 weeks after initiating the intervention |