Gen AI Powered Behavioral Support Plus Chewing Gum Intervention for Construction Workers Who Smoke

The goal of this pilot trial is to learn if 1-week NRT sampling, 3-week chewing gum, and 12-week chatbot-delivered instant messaging support works to help smoking cessation in construction workers who smoke. It will also learn about the feasibility, acceptability, and preliminary effectiveness of delivering the comprehensive intervention in construction settings. The main questions it aims to answer are: 1. Will the integrated intervention, comprising NRT sampling, chewing gum, and chatbot-delivered instant messaging support, show feasibility, acceptability, and appropriateness for delivery in construction worksite settings? 2. Will participants who receive the comprehensive intervention have a higher validated abstinence rate than those who receive NRT sampling alone? Researchers will compare the integrated intervention, comprising NRT sampling, chewing gum, and chatbot-delivered instant messaging support, to the standard care group (NRT sampling alone) to see if the integrated intervention works to promote smoking cessation. Participants in the intervention group will receive: 1. AWARD advice and brief video 2. 1-week NRT sampling 3. 3-week chewing gum 4. 12-week chatbot-based instant messaging support (via WhatsApp)

NCT Number	NCT07649018
Lead Sponsor	The University of Hong Kong
Conditions	Smoking Cessation
Enrollment	200 participants
Start Date	2026-06-20
Primary Completion	2027-05-31 (estimated)
Study Completion	2027-06-30 (estimated)
Updated on ClinicalTrials.gov	2026-06-17