E-Cigarette Brand Use by Race/Ethnicity in a US Sample of Adolescent and Young Adult E-Cigarette Users, 2022-2023.

Our study demonstrates the importance of research methods to detect rapidly changing patterns of e-cigarette use by race/ethnicity and age. The inclusion of measures capturing brand use can detect evidence of product features and targeted marketing that may have consequences for patterns of tobacco use and nicotine exposure among these groups.