Impact of E-Cigarette Prevention Messages on Adolescents

Participants will receive text messages (2 daily, on average) about the harms of e-cigarette use and vaping for 28 days, with introductory messages sent on day 1 and concluding messages sent on day 28. Each vaping prevention text message will focus on one of six topics: nicotine addiction, monetary costs of vaping, chemical exposures from e-cigarette vapor, cosmetic effects of vaping, mental and physical use symptoms of vaping, and health impact on organs from vaping. Some text messages will ask participants for a reply (i.e., two-way messages).

Participants will receive text messages (2 daily, on average) about general wellness topics, with introductory messages sent on day 1 and concluding messages sent on day 28. Each wellness text message will focus on one of six topics: sleep hygiene, safe driving, sun safety, study habits, nutrition, and exercise. This attention control condition is matched with the intervention condition in that participants will receive the same number of text messages over the same number of days, the same intervention structure (e.g., 6 topics), and the same number and types of two-way messages.