Second primary exposure: vaping frequency Our second primary exposure of interest was vaping frequency, operationalized as individuals who vape every day (every-day vapers), individuals who vape some days (some-days vapers), individuals who vaped at least once but no longer vape (ever but no longer vapers), and individuals who never vaped (never vapers), determined by the two questions: Have you ever used an e-cigarette, even 1 time? and Do you now use e-cigarettes every day, some days, or not at all? 25
52 These various menthol properties might explain the growing evidence that smokers of mentholated cigarettes are less likely to quit smoking or benefit from both behavioral and pharmacologic treatment interventions
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The house S
TPD lays out rules and regulations for the manufacturing and sale of all tobacco products, as well as e-cigarettes and all other vape products
