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.
186 studies on the registry are indexed under Suicide Prevention; 92 are open to participants now.
This study's planned enrollment of 80 is below the median of 140 across 167 interventional studies indexed under Suicide Prevention.
Browse Suicide Prevention studies →The Hong Kong Polytechnic University is the lead sponsor of 679 studies on the registry; 257 are open to participants now.
Compared within Suicide Prevention, this study's primary condition as ClinicalTrials.gg classifies it; the registry's first condition term is Suicide. The counts are of registry records indexed under each term, refreshed daily. How we classify →
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Aged 18 years or older;
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Unable to provide or participate in study activities;
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Informed consent
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
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
Start is estimated for Jul 2026; primary completion for Oct 2026, 3 months later.
Of 127 non-industry interventional studies with no phase under Suicide Prevention, half reached primary completion within 28 months of starting (the median), counting those still running; a quarter within 12 and three quarters within 53. This study's planned 3 months is below that.
Counting every sponsor, half of 129 studies reached it within 28 months; a quarter within 12 and three quarters within 53.
How these figures are worked out, and which studies are left out of them.
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 →