Increased nicotine vaping due to the COVID-19 pandemic among US young adults: Associations with nicotine dependence, vaping frequency, and reasons for use.

"Declaration of interests The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. Financial disclosures No financial disclosures were reported by the authors of this paper. Declaration of Competing Interest The authors report no conflicts of interest."

"Data collection and manuscript preparation were supported by research grants from the 10.13039/100000026National Institute on Drug Abuse (R01DA001411 and R01DA016575). The study sponsors had no role in the study design, collection, analysis or interpretation of the data, writing of the manuscript, or the decision to submit the paper for publication. The content is solely the responsibility of the authors and does not necessarily represent the official views of the study sponsor. This research was also supported by the 10.13039/100000054National Cancer Institute of the 10.13039/100000002National Institutes of Health (NIH) and FDA 10.13039/100010628Center for Tobacco Products (CTP) under Award Number U54CA229974. The content is solely the responsibility of the authors and does not necessarily represent the official views of the NIH or the Food and Drug Administration. Michael J. Parks: Conceptualization, Methodology, Software, Validation, Formal analysis, Investigation, Data curation, Writing – original draft, Writing – review & editing, Visualization. Nancy L. Fleischer: Validation, Methodology, Writing – original draft, Writing – review & editing, Visualization. Megan E. Patrick: Conceptualization, Methodology, Validation, Investigation, Resources, Writing – review & editing, Supervision, Project administration, Funding acquisition."