Tobacco Control Office, Chinese Center for Disease Control and Prevention, Beijing, Beijing, China
China office, World Health Organization, Geneve, GE, Switzerland.
Tob Control. 2022 Jul;31(4):498-504. doi: 10.1136/tobaccocontrol-2020-056114. Epub 2021 Feb 19.
To assess the awareness and prevalence of electronic cigarettes (e-cigarettes) and associated factors among Chinese adults (15 years and older).
This study examined data from Global Adults Tobacco Survey China Project, which was nationally representative and used stratified multiphase cluster randomised sampling design. Data were collected in 2018 through a household survey with in-person interviews using tablet computers. Complex sampling weighted analysis method was used.
48.5% of Chinese adults had heard of e-cigarettes. The proportions of Chinese adults who had ever used, had used in the last 12 months, and currently used e-cigarettes were 5.0%, 2.2% and 0.9%, respectively; people in the 15-24 years group showed the highest rates of ever use, last 12-month use and current use at 7.6%, 4.4%, and 1.5%, respectively. Among males, higher e-cigarette use was associated with 15-24 years age group, college/university or above education, and daily use of combustible cigarettes. Among all e-cigarette users, 90.6% also used combustible cigarettes. The most common reason for e-cigarette use was smoking cessation (46.2%) while among ever smokers, 9.5% of ever e-cigarette users had quit smoking and 21.8% of never e-cigarette users had quit smoking (adjusted OR 0.454, 95% CI 0.290 to 0.712).
Prevalence of e-cigarettes among Chinese adults had increased since 2015, especially among young people aged 15-24. The high level of dual use and lower quit rate among e-cigarette users indicated e-cigarettes had not shown cessation utility at the population level in China. Regulation of e-cigarettes is needed to protect youth and minimise health risks.
评估中国成年人（15 岁及以上）对电子烟的认知和流行情况及其相关因素。
本研究使用分层多阶段整群随机抽样设计，对中国全球成人烟草调查项目的数据进行了分析。数据于 2018 年通过使用平板电脑进行入户调查的家庭调查收集。采用复杂抽样加权分析方法。
48.5%的中国成年人听说过电子烟。中国成年人中曾使用、过去 12 个月内使用和当前使用电子烟的比例分别为 5.0%、2.2%和 0.9%；15-24 岁年龄组的曾使用、过去 12 个月内使用和当前使用的比例最高，分别为 7.6%、4.4%和 1.5%。在男性中，电子烟使用率较高与 15-24 岁年龄组、大学及以上学历和每日使用可燃香烟有关。在所有电子烟使用者中，90.6%还使用可燃香烟。使用电子烟的最常见原因是戒烟（46.2%），而在所有吸烟者中，9.5%的曾使用电子烟者已戒烟，21.8%的从未使用电子烟者已戒烟（调整后的 OR 0.454，95%CI 0.290 至 0.712）。
自 2015 年以来，中国成年人中电子烟的流行率有所上升，尤其是 15-24 岁的年轻人。电子烟的高双重使用率和低戒烟率表明，电子烟在中国人群中并未显示出在戒烟方面的效果。需要对电子烟进行监管，以保护青少年并尽量减少健康风险。
