Table 1.
Summary of the primary, secondary, and tertiary outcome measures, risk factors, other measures, and data collection time points.
| Outcomes measures | Scale | Baseline | Postintervention | Three-month follow-up | |
| Primary outcome |
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Suicidal thoughts | Suicidal Ideation Attributes Scale (SIDAS) | Yes | Yes | Yes |
| Secondary outcomes |
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Suicide behaviors | Suicide attempt and self-harm | Yes | Yes | Yes |
|
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Depression | Patient Health Questionnaire-9 (PHQ-9) | Yes | Yes | Yes |
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Anxiety | Generalized Anxiety Disorder-7 (GAD-7) | Yes | Yes | Yes |
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Psychological distress | Distress Questionnaire-5 (DQ-5) | Yes | Yes | Yes |
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General mental well-being | Short Warwick-Edinburgh Mental Wellbeing Scale (SWEMWBS) | Yes | Yes | Yes |
| Tertiary outcomes |
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Insomnia | Insomnia Severity Index (ISI) | Yes | Yes | Yes |
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Rumination | Repetitive Thinking Questionnaire (RTQ) | Yes | Yes | Yes |
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Suicide cognitions | Suicide Cognitions Scale (SCS) | Yes | Yes | Yes |
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Distress intolerance | Distress Tolerance Scale (DTS) | Yes | Yes | Yes |
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Loneliness | Three-Item Loneliness Scale (TILS) | Yes | Yes | Yes |
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Help-seeking intentions | General Help-Seeking Questionnaire (GHSQ) | Yes | Yes | Yes |
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Help-seeking behaviors | Client Service Receipt Inventory (CSRI) | Yes | No | Yes |
| Risk factors and other measures |
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Demographics | Questions | Yes | No | No |
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Perseverance | Short Grit Scale (SGS) | Yes | No | No |
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COVID-19–related worry | Questions | Yes | No | No |
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Negative events | Negative Life Events Scale for Students (NLESS) | Yes | No | No |
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Expectations of treatment success | Questions | Yes | No | No |
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Satisfaction with the app | Questions | No | Yes | No |