School-Family Linked and Online-Offline Combined Tobacco Control Intervention for Adolescents: Protocol for a Cluster Randomized Pilot Trial

Background

Tobacco use remains a leading preventable cause of disease, yet adolescent-focused tobacco prevention is underexploited. We developed a real-time adaptive intervention that combines school-family collaboration with online-offline delivery (via WeChat mini-programs, games, and curricula) to address adolescents' overlooked role as health catalysts and persistent household secondhand smoke (SHS) exposure.