This is a letter to the editor of Preventive Medicine responding to Harrell et al.'s “Impact of the e-cigarette era on cigarette smoking among youth in the United States: A population-level study.” (Harrell MB, Mantey DS, Baojiang C, Kelder SH, Barrington-Trimis J. Impact of the e-cigarette era on cigarette smoking among youth in the United States: A population-level study. Preventive Medicine 2022;164:107265).

The preparation of this correspondence was funded by JUUL Labs Inc. (JLI). JLI provided comments on a draft review and did not otherwise play a role in these analyses. The content and the decision to publish are the responsibility of the author. Through PinneyAssociates, Floe Foxon provides consulting services on tobacco harm reduction on an exclusive basis to JLI.

This correspondence uses only publicly available de-identified survey data. Under exemption four of NIH definitions, this research is therefore exempt from NIH human subjects research. All methods were performed in accordance with relevant guidelines and regulations.

The preparation of this correspondence was funded by JUUL Labs Inc. (JLI). JLI provided comments on a draft review and did not otherwise play a role in these analyses. The content and the decision to publish are the responsibility of the author. Through PinneyAssociates, Floe Foxon provides consulting services on tobacco harm reduction on an exclusive basis to JLI.

The author thanks Arielle Selya, Saul Shiffman, and Joe Gitchell of PinneyAssociates for their contributions to this correspondence.

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