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Purpose: The tobacco and nicotine market is diversifying. Implications for public health will depend on trends in use, including overall use, and who is using these products. This study examined differences over time (2017-2019), across countries (Canada, England, the United States (US)), and by smoking and vaping, in use of other tobacco/nicotine products and overall use., Methods: The study includes online repeat cross-sectional surveys of youth aged 16-19 years in Canada (N = 11,714), England (N = 11,170), US (N = 11,838) in 2017, 2018, and 2019. Past 30-day use of tobacco/nicotine products (any, cigarette, e-cigarette, other combusted [cigars/cigarillos/waterpipe], other non-combusted [smokeless tobacco/nicotine replacement therapies) were examined by country, year, and, for other combusted and non-combusted products, past 30-day cigarette smoking and vaping. Use of emerging products (IQOS, nicotine pouches) was explored in 2018-2019., Results: From 2017 to 2019, use of any product increased in Canada (17.1%-23.2%, AOR = 1.07 [95% CI = 1.04-1.09]) and the US (18.0%-24.0%, AOR = 1.06 [1.04-1.09]) but not England (20.8%-21.7%, AOR = 1.01 [.99-1.03]). Use of other combusted products (cigars/cigarillos/waterpipe) showed little change (Canada: 8.1%-7.8%; England: 6.3%-7.3%; US: 8.6%-8.5%; p ≥ .151). Use of other non-combusted products (smokeless/nicotine replacement therapies) increased in all countries (Canada: 1.5%-3.2%, AOR = 1.02 [1.01-1.02]; England: 1.4%-2.6%, AOR = 1.02 [1.01-1.03]; US: 3.3%-4.9%, AOR = 1.02 [1.01-1.02]). Vaping increased in all countries (Canada: 8.4%-17.8%; England: 8.7%-12.6%; United States: 11.1%-18.5%; all p < .001). Smokers and vapers reported greater use of other combusted and non-combusted products than those who neither smoked/vaped (p < .001). Emerging product use was rare (≤1.5%)., Conclusions: Youth past 30-day tobacco and nicotine product use increased from 2017 to 2019 in Canada and the United States, largely due to increases in vaping and other non-combusted products. "Other" tobacco/nicotine products were used predominantly by youth who smoked cigarettes and/or vaped., (Copyright © 2021 Society for Adolescent Health and Medicine. Published by Elsevier Inc. All rights reserved.)

Background: Increased electronic cigarette (e-cigarette) use among young people is often attributed to industry marketing practices; however, the effectiveness of regulations that limit e-cigarette advertising and promotions has yet to be examined. New federal legislation that liberalized the Canadian e-cigarette market in May 2018, along with differences in provincial regulations, provides an opportunity to examine the impact of regulatory restrictions on e-cigarette marketing., Methods: Repeat cross-sectional surveys of 12 004 16- to 19-year-olds in Canada, completed online in 2017, 2018, and 2019. Logistic regression models were used to examine differences over time in exposure to e-cigarette marketing and e-cigarette use, including between provinces with differing strengths of marketing restrictions., Results: The percentage of youth surveyed who reported noticing e-cigarette promotions often or very often approximately doubled between 2017 and 2019 (13.6% vs 26.0%; adjusted odds ratio [AOR] = 2.24, 95% confidence interval [CI] = 1.97-2.56). Overall exposure to marketing was generally more prevalent in provinces with fewer regulatory restrictions. Respondents who reported noticing marketing often or very often were more likely to report vaping in the past 30 days (AOR = 1.41, 95% CI = 1.23-1.62), past week (AOR = 1.44, 95% CI = 1.22-1.70), and ≥20 days in the past month (AOR = 1.42, 95% CI = 1.11-1.81, P = .005). Provinces with low restrictions on marketing had higher prevalence of vaping in the past 30 days (AOR = 1.50, 95% CI = 1.25-1.80, P < .001), and in the past week (AOR = 1.65, 95% CI = 1.33-2.05, P < .001)., Conclusions: Exposure to marketing and the prevalence of vaping increased among Canadian youth after the liberalization of the e-cigarette market in 2018. Comprehensive provincial restrictions on e-cigarette marketing were associated with lower levels of exposure to marketing and lower prevalence of e-cigarette use., Competing Interests: POTENTIAL CONFLICT OF INTEREST: Dr Hammond has served as a paid expert witness in legal challenges against tobacco companies; the other authors have indicated they have no potential conflicts of interest to disclose., (Copyright © 2020 by the American Academy of Pediatrics.)

The current study examined prevalence and correlates of electronic cigarette (e-cigarette) use in the Canadian population, using data from the nationally representative 2013 Canadian Tobacco, Alcohol and Drugs Survey (n=14,565). Sociodemographic correlates of e-cigarette use (ever, and in the past 30 days) were examined using logistic regression models. Overall, 8.5% of Canadians aged 15 and older reported having ever tried an e-cigarette; 1.8% had used one in the past 30 days. E-cigarette use was particularly high among smokers and young people. Overall, prevalence did not differ between males and females, for ever (P=0.24) or past 30-day use (P=0.30). Smoking status was the strongest correlate of e-cigarette use (ever and in the past 30 days, P<0.0001): 37.3% of current smokers had ever tried an e-cigarette (9.6% used in the past 30 days), compared to 3.0% of never-smokers (0.3% past 30-days), and 5.1% of former smokers (0.9% past 30-day). E-cigarette use also varied by age (P<0.0001): prevalence was highest among youth aged 15-19 (19.8% ever; 2.6% past 30-day) and young adults aged 20-24 (20.1% ever; 3.9% past 30-day), and decreased with age. Among youth, the majority of e-cigarette users were never-smokers, while the majority of adult users were smokers. In Canada, e-cigarette use is particularly high among smokers and young people. Dual use with cigarettes was common, with most e-cigarette users also smoking conventional cigarettes. Continued monitoring of e-cigarette use and its relationship with smoking should be a priority, given the rapidly-evolving e-cigarette market and implementation of new policy measures., (Copyright © 2015 Elsevier Inc. All rights reserved.)