N
← Back to Search
Sponsored

Accelerate Your Clinical Trial Recruitment

Reach thousands of high-intent patients matching your specific inclusion criteria.

Start Campaign
RECRUITING Not applicable ClinicalTrials.gov

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

Sponsor: The University of Hong Kong • ClinicalTrials.gov ID: NCT07826884

Registry updated: 2026-10-01
Ad

Recruiting for Similar Conditions?

Sponsors are looking for patients like you. See if you qualify for compensated research studies.

Check Eligibility →

Description

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.

Interventions

  • Chatbot Cessation Service With Randomized Reminder Timing (Behavioral)
    The chatbot cessation service provides digital smoking cessation support through a chatbot platform. Participants receive routine chatbot-based cessation support, including scheduled weekly AI-generated reminders during the 12-week service period. Excluding the initial welcoming message, the timing of the remaining 11 weekly reminders will be repeatedly randomized at weekly decision points across predefined day-type and time-of-day conditions. The randomized component is limited to reminder delivery timing. All participants receive the same chatbot content and support.

Eligibility criteria

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

Conditions

Smoking Cessation

Locations

  • School of Nursing, The University of Hong Kong — Hong Kong, Hong Kong
Sponsored

Partner with Nurenyx

Showcase your study to thousands of motivated patients matching your criteria.

Learn More

Official Source

Data sourced from ClinicalTrials.gov, a service of the U.S. National Institutes of Health.

View Official Record