An interventional study of Digital ACT Intervention in Suicide, Co-design and Suicide Prevention, sponsored by The Hong Kong Polytechnic University. Not yet recruiting at 1 site in China. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-07-29.
Sponsored by The Hong Kong Polytechnic University · Not applicable, Interventional, and Prevention
Suicide is a major public health concern and there is a need for accessible and scalable interventions to support individuals experiencing suicidal thoughts. The aim of this study is to develop a digital Acceptance and Commitment Therapy (ACT) intervention for suicide prevention in Chinese adults through co-design. The study will involve literature review, interviews, and co-design activities to identify user needs, preferences, and contextual factors, and to develop the intervention. Following intervention development, a pilot study will be conducted to evaluate the feasibility, usability, acceptability, and user engagement of the intervention. Findings from this study will inform further refinement of the intervention and future evaluation studies.
Aged 18 years or older;
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Unable to provide informed consent or participate in study activities;
The Digital ACT Intervention will be co-designed with stakeholders and informed by co-design activities. The intervention aims to support adults experiencing suicidal thoughts through a digital platform.
Behavioral: Digital ACT Intervention
A co-designed digital Acceptance and Commitment Therapy (ACT) intervention for suicide prevention
Intervention completion rate
The intervention completion rate will be assessed as the percentage of participants who complete the digital intervention, based on intervention usage records.
Time frame: End of the intervention (approximately 2 weeks)
Retention rate
The participant retention rate will be assessed as the percentage of participants who complete the post-intervention assessment and the follow-up assessment.
Time frame: End of the 1-month follow-up
Acceptability outcome
Acceptability of the intervention will be assessed using participant-reported ratings and feedback regarding satisfaction and overall experience with the intervention.
Time frame: End of the intervention (approximately 2 weeks)
Usability outcome
Usability will be assessed using the System Usability Scale (SUS), a 10-item self-report questionnaire. Total scores range from 0 to 100, with higher scores indicating better usability of the intervention.
Time frame: End of the intervention (approximately 2 weeks)
Suicide ideation
Suicidal ideation will be assessed using the Beck Scale for Suicide Ideation (BSSI). Each item is rated on a 3-point scale ranging from 0 to 2, with higher scores indicating greater suicidal ideation.
Time frame: Baseline, end of the 2-week intervention, and 1-month follow-up
Psychological flexibility and inflexibility
Psychological flexibility and inflexibility will be assessed using the Multidimensional Psychological Flexibility Inventory-24 (MPFI-24). Each item is rated on a 6-point scale ranging from 1 to 6. Higher scores on the flexibility and inflexibility subscales indicate greater psychological flexibility and psychological inflexibility, respectively.
Time frame: Baseline, end of the 2-week intervention, and 1-month follow-up
Psychological Distress
Psychological distress will be assessed using the Depression Anxiety Stress Scales (DASS). Each item is rated on a 4-point scale ranging from 0 to 3, with higher scores indicating greater psychological distress.
Time frame: Baseline, end of the 2-week intervention, and 1-month follow-up
Mental well-being
Mental well-being will be assessed using the Mental Health Continuum-Short Form (MHC-SF). Each item is rated on a 6-point scale ranging from 0 to 5, with higher scores indicating greater mental well-being.
Time frame: Baseline, end of the 2-week intervention, and 1-month follow-up
Qualitative Feedback and Design Recommendations
Qualitative feedback related to user needs, preferences, barriers, facilitators, cultural considerations, and recommendations for intervention refinement will be identified from co-design activities and feedback sessions.
Time frame: Through study completion, an average of 6 months
Cultural Relevance
Cultural relevance of the intervention will be assessed through participant feedback regarding the appropriateness, relevance, and cultural fit of the intervention content and delivery.
Time frame: Through study completion, an average of 6 months
This study is not yet recruiting, as verified in Jun 2026. You cannot join it, but the record below documents what was studied.
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The Hong Kong Polytechnic University