Abstract：
OBJECTIVE: To measure changes over time (between 2017 and 2023) in disposable e-cigarette use and popular brands among youth in Canada, England and the United States (US) who vaped.
METHODS: Nine waves of repeat cross-sectional data from the International Tobacco Control Policy Evaluation Project (ITC) Youth Tobacco and Vaping Survey.
METHODS: Online surveys conducted in Canada, England and the US between 2017 and 2023.
METHODS: Youth aged 16 to 19 years who had vaped in the past 30 days (n = 19 710).
METHODS: Usual type (disposable, cartridge/pod, tank) and brand of e-cigarette used; covariates sex at birth, age, race/ethnicity, cigarette smoking status, vaping on ≥20 of the past 30 days.
RESULTS: In 2017, the majority of youth who vaped in the past 30 days reported using refillable tank e-cigarettes, whereas disposable e-cigarettes were the least commonly used product type in Canada (10.0%), England (8.6%) and the US (14.4%). Cartridge/pods overtook tank devices in Canada and the US by 2020; however, by 2023, disposables were the leading type of e-cigarette used by youth who vaped in all three countries (Canada = 58.5%; England = 83.2%; US = 67.3%). The shift to disposables occurred among all socio-demographic groups, with few differences by vaping and smoking status. The percentage of youth who vaped that reported \'no usual\' brand also decreased substantially from 2017 (29% to 42%) to 2023 (11% to 17%). The rise of disposable e-cigarettes appeared to be driven primarily by individual brands in the US (Puff Bar in 2020/2021, Elf Bar in 2022/2023) and England (Elf Bar in 2022/2023).
CONCLUSIONS: The e-cigarette market has evolved rapidly with notable shifts in the types of e-cigarettes used by youth who vape in Canada, England and the United States. Although the timing differed across countries, major shifts in device types appear to be driven by individual brands and were often accompanied by increases in vaping prevalence among youth.
METHODS: Nine waves of repeat cross-sectional data from the International Tobacco Control Policy Evaluation Project (ITC) Youth Tobacco and Vaping Survey.
METHODS: Online surveys conducted in Canada, England and the US between 2017 and 2023.
METHODS: Youth aged 16 to 19 years who had vaped in the past 30 days (n = 19 710).
METHODS: Usual type (disposable, cartridge/pod, tank) and brand of e-cigarette used; covariates sex at birth, age, race/ethnicity, cigarette smoking status, vaping on ≥20 of the past 30 days.
RESULTS: In 2017, the majority of youth who vaped in the past 30 days reported using refillable tank e-cigarettes, whereas disposable e-cigarettes were the least commonly used product type in Canada (10.0%), England (8.6%) and the US (14.4%). Cartridge/pods overtook tank devices in Canada and the US by 2020; however, by 2023, disposables were the leading type of e-cigarette used by youth who vaped in all three countries (Canada = 58.5%; England = 83.2%; US = 67.3%). The shift to disposables occurred among all socio-demographic groups, with few differences by vaping and smoking status. The percentage of youth who vaped that reported \'no usual\' brand also decreased substantially from 2017 (29% to 42%) to 2023 (11% to 17%). The rise of disposable e-cigarettes appeared to be driven primarily by individual brands in the US (Puff Bar in 2020/2021, Elf Bar in 2022/2023) and England (Elf Bar in 2022/2023).
CONCLUSIONS: The e-cigarette market has evolved rapidly with notable shifts in the types of e-cigarettes used by youth who vape in Canada, England and the United States. Although the timing differed across countries, major shifts in device types appear to be driven by individual brands and were often accompanied by increases in vaping prevalence among youth.
摘要：
目标：衡量加拿大年轻人中一次性电子烟使用和流行品牌随时间的变化（2017年至2023年），英国和美国（美国）谁吸了烟。
方法：来自国际烟草控制政策评估项目（ITC）青年烟草和Vaping调查的九波重复横截面数据。
方法：在加拿大进行的在线调查，英国和美国在2017年至2023年之间。
方法：在过去30天内吸过烟的16至19岁青年（n=19.710）。
方法：通常类型（一次性，墨盒/吊舱，坦克)和使用的电子烟品牌；协变量出生时的性别，年龄,种族/民族,吸烟状况,过去30天内≥20天的电子烟。
结果：在2017年，大多数在过去30天内吸过烟的年轻人报告使用了可再填充的罐式电子烟，而一次性电子烟是加拿大最不常用的产品类型(10.0%)，英国（8.6%）和美国（14.4%）。到2020年，墨盒/吊舱在加拿大和美国超过了坦克设备；然而，到2023年,一次性用品是在所有三个国家(加拿大=58.5%;英国=83.2%;美国=67.3%)吸烟的年轻人使用的主要电子烟类型.向一次性用品的转变发生在所有社会人口群体中，vaping和吸烟状况几乎没有差异。从2017年（29％至42％）到2023年（11％至17％），使用该品牌的年轻人比例也大幅下降。一次性电子烟的兴起似乎主要是由美国的个人品牌（2020/2021年的PuffBar，2022/2023年的ElfBar）和英格兰（2022/2023年的ElfBar）推动的。
结论：电子烟市场发展迅速，加拿大年轻人使用的电子烟类型发生了显着变化，英国和美国。尽管时间因国家而异，设备类型的主要变化似乎是由单个品牌驱动的，并且通常伴随着年轻人中电子烟患病率的增加。
方法：来自国际烟草控制政策评估项目（ITC）青年烟草和Vaping调查的九波重复横截面数据。
方法：在加拿大进行的在线调查，英国和美国在2017年至2023年之间。
方法：在过去30天内吸过烟的16至19岁青年（n=19.710）。
方法：通常类型（一次性，墨盒/吊舱，坦克)和使用的电子烟品牌；协变量出生时的性别，年龄,种族/民族,吸烟状况,过去30天内≥20天的电子烟。
结果：在2017年，大多数在过去30天内吸过烟的年轻人报告使用了可再填充的罐式电子烟，而一次性电子烟是加拿大最不常用的产品类型(10.0%)，英国（8.6%）和美国（14.4%）。到2020年，墨盒/吊舱在加拿大和美国超过了坦克设备；然而，到2023年,一次性用品是在所有三个国家(加拿大=58.5%;英国=83.2%;美国=67.3%)吸烟的年轻人使用的主要电子烟类型.向一次性用品的转变发生在所有社会人口群体中，vaping和吸烟状况几乎没有差异。从2017年（29％至42％）到2023年（11％至17％），使用该品牌的年轻人比例也大幅下降。一次性电子烟的兴起似乎主要是由美国的个人品牌（2020/2021年的PuffBar，2022/2023年的ElfBar）和英格兰（2022/2023年的ElfBar）推动的。
结论：电子烟市场发展迅速，加拿大年轻人使用的电子烟类型发生了显着变化，英国和美国。尽管时间因国家而异，设备类型的主要变化似乎是由单个品牌驱动的，并且通常伴随着年轻人中电子烟患病率的增加。
