Institute for Global Tobacco Control, Department of Health, Behavior and Society, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, United States.
Department of Health Education and Promotion, East Carolina University, Greenville, NC, United States.
Addict Behav. 2022 Dec;135:107441. doi: 10.1016/j.addbeh.2022.107441. Epub 2022 Jul 25.
The combination of electronic nicotine delivery systems (ENDS) device and liquid characteristics affect user nicotine and toxicant exposure, however population-level national survey studies have not reported device and liquid features jointly nor in detail. We examined combinations of characteristics of devices and liquids used by adult ENDS users.
U.S. adults (21+) using ENDS at least five days/week (n = 1,179) completed an online survey in 2020 and uploaded photos of their most used device and liquid. Device/liquid combinations were analyzed to determine and describe the most common pairings. Data were weighted to the U.S. population of adult daily ENDS users.
Five device/liquid combinations accounted for 87 % of those reported. The most prevalent combination, reported by 36.2 %, was re-useable devices with adjustable settings and a tank refilled with a free-base nicotine liquid with a median nicotine concentration of 5.2 mg/mL. The second most frequent combination - re-usable devices with no adjustable settings and a nicotine salt liquid in a disposable pod or cartridge - was reported by 22.8 % and the median nicotine concentration was 49.4 mg/mL. Wattage, voltage and resistance varied across device/liquid combination. Overall, 66.5 % refilled their device's tank or pod and 64.2 % had the ability to manipulate device characteristics (power, airflow, and/or coil).
Analyzing ENDS device/liquid combinations rather than each separately can allow researchers to better evaluate relationships between use and key outcomes, such as quitting cigarettes and abuse liability. Additional research may reveal whether certain combinations are more effective at helping smokers quit and which device/liquid combinations should remain on the market.
电子尼古丁传送系统（ENDS）装置和液体特性的结合会影响用户对尼古丁和有毒物质的暴露，然而，基于人群的全国性调查研究尚未联合且详细报告装置和液体的特征。我们检查了成年 ENDS 用户使用的装置和液体特征的组合。
至少每周使用 ENDS 五天（n=1179）的美国成年人在 2020 年完成了一项在线调查，并上传了他们最常用的装置和液体的照片。对装置/液体组合进行了分析，以确定和描述最常见的组合。数据经过了美国成年日常使用 ENDS 人群的加权处理。
五种装置/液体组合占报告的 87%。报告最普遍的组合占 36.2%，是可重复使用的装置，带有可调节的设置，以及一个填充游离碱尼古丁液体的罐，尼古丁浓度中位数为 5.2mg/mL。第二常见的组合是可重复使用的装置，没有可调节的设置，以及尼古丁盐液体在一次性烟弹或墨盒中，占 22.8%，尼古丁浓度中位数为 49.4mg/mL。装置/液体组合的瓦数、电压和电阻各不相同。总体而言，66.5%的人会重新填充装置的罐或烟弹，64.2%的人能够操作装置的特征（功率、气流和/或线圈）。
分析 ENDS 装置/液体的组合而不是单独分析每一个组合，可以让研究人员更好地评估使用与关键结果之间的关系，如戒烟和滥用倾向。进一步的研究可能会揭示某些组合在帮助吸烟者戒烟方面是否更有效，以及哪些装置/液体组合应该保留在市场上。
