Developing a Community Support Program to Help People Quit Smoking.

Brief Summary What is the purpose of this research? The goal of this study is to test a new method to help informal workers in Thailand quit smoking. The investigators seek to determine if a community-based system using digital tools (such as the Line app) is more effective than the standard care provided by local health centers. How will the research happen? The investigators will divide participants into two groups: Intervention Group: This group will receive a new support system. Trained village health volunteers (VHVs) will offer brief advice and support. Participants will also receive messages and counseling through the Line application and a telephone "Quitline" (1600). Comparison Group: This group will receive the standard care normally provided at local health centers. The study takes place in Saraburi, Thailand, and lasts for approximately 3 months. Who can take part? The study team is seeking individuals who: Are between 18 and 60 years old. Work in jobs without formal contracts (informal workers), such as street vendors or farmers. Currently smoke cigarettes. Own a smartphone with internet access. What are the research questions? The investigators will measure four primary outcomes after 3 months to evaluate the effectiveness of the new system: The number of smokers who received sufficient information to decide to quit. The number of participants who intend to quit smoking. The number of participants who successfully quit smoking (confirmed by a breath test). The cost and value of the program compared to the health benefits gained.

NCT Number	NCT07432152
Lead Sponsor	Mahidol University Collaborators: National Research Council of Thailand
Conditions	Smoking Cessation
Enrollment	80 participants
Start Date	2026-02-09
Primary Completion	2026-04-30 (estimated)
Study Completion	2026-05-15 (estimated)
Updated on ClinicalTrials.gov	2026-07-07