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. Author manuscript; available in PMC: 2023 Sep 1.
Published in final edited form as: Addict Behav. 2022 Apr 28;132:107339. doi: 10.1016/j.addbeh.2022.107339

Figure 1. Respondents’ vaping status and frequency categorization for each of the study objectives.

Figure 1.

Categories were created based on survey questions outlined in Box 1.

*Those who reported vaping at least monthly or had a history of more frequent vaping prior to their baseline measure were excluded from the analytical sample. ± ‘Any vaping’ were those who initiated vaping at least monthly. ┼ Inter-wave vaping frequency is unknown. α Reference group.