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Optimizing Chatbot Reminder Timing in a Chatbot Cessation Service: A Micro-Randomized Trial

RecruitingNAAges any - anyAllThe University of Hong Kong
NCT07826884 on ClinicalTrials.gov ↗
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In plain words

What the trial is, and whether it could suit you

The goal of this study is to learn whether the timing of weekly chatbot reminders affects user engagement with the chatbot cessation service. Participants enrolled in the routine chatbot cessation service will be included in a micro-randomized trial. The delivery timing of weekly reminders will be randomly assigned across different day types and times of day during the 12-week chatbot cessation service period. The study will use routine chatbot system records to evaluate engagement after reminder delivery, including whether participants respond to the chatbot and how quickly they re-engage with the service.

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📋 Eligibility rules (as published)
Inclusion Criteria: * Able to communicate in Chinese (Cantonese) * Have access to or are willing to use WhatsApp to access the chatbot cessation service * Used any tobacco in the past 30 days (including all types of tobacco products such as cigarette, shisha, electronic cigarettes, and heat-not-burn (HNB)) Exclusion Criteria: * Have communication difficulties (either physical or cognitive) that prevent completion of the counselling and assessments * Having queries irrelevant to tobacco control
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What it tests

  • Chatbot Cessation Service With Randomized Reminder Timing
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Where

1 site
School of Nursing, The University of Hong Kong
Hong Kong, Hong Kong
🤝 Taking part is your choice, and you can leave at any time. Only the trial team can confirm you are eligible — always decide together with your own doctor.
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