Scalability of Chat-Based Cessation

To the Editor We read with great interest the randomized clinical trial by Luk and colleagues, which demonstrated that a mobile chat messaging intervention significantly reduced smoking relapse. The finding that a hybrid model combining live counseling and chatbot support increased 6-month validated abstinence is a pivotal contribution. However, as we consider scaling this approach, 2 critical dimensions regarding the “active ingredients” and workforce sustainability warrant further scrutiny.