Footnotes

• Contributors MM designed and implemented the study. MM, ASLT, SS and KC generated the survey questions used for the study collectively. MM, SS and ASLT performed the analysis. ASLT and SS wrote the manuscript. All authors contributed to revising the manuscript.

• Funding Data collection for this study was supported by the National Institute on Drug Abuse and Food and Drug Administration Center for Tobacco Products (K01DA037903-S1). MM’s effort were supported by the National Institute on Drug Abuse and Food and Drug Administration Center for Tobacco Products (K01DA037903). KC’s effort is supported by the National Institute on Minority Health and Health Disparities Division of Intramural Research. Funding sources did not have any role in the study design; collection, analysis and interpretation of data; writing the report; the decision to submit the report for publication. The content is solely the responsibility of the authors and does not necessarily represent the official views of the US Government, the Department of Health and Human Services, the Food and Drug Administration, or the National Institutes of Health.

• Competing interests MM is serving as an expert witness for the prosecutor (Public Health Advocacy Institute) in litigation in which RJ Reynolds Tobacco Company was the defendant.

• Patient consent for publication Not required.

• Ethics approval and informed consent The Johns Hopkins University Bloomberg School of Public Health’s Institutional Review Board reviewed and approved the study protocol (IRB00008763). Youth and young adult participants read an information sheet on the first page of the survey and clicked a button indicating they agreed to take the survey. We had a waiver of parental consent.

• Provenance and peer review Not commissioned; externally peer reviewed.