IntroductionThe long-term health effects of e-cigarettes are uncertain, and dataon e-cigarette use among Chinese adults are limited. This study examined theprevalence and correlates of e-cigarette awareness and use among urban residentsin China. Data came from the China City Adult Tobacco Survey (CCATS), acity-representative household survey conducted using electronic tablets during2013–2014 in 14 major Chinese cities.MethodsCCATS used multistage geographically clustered samples withstandardized survey protocols and questionnaire to ensure data comparability.Overall, 31151 adults completed the survey, with sample size varying from 1977to 3838 across cities, and survey response rates ranging from 79.8% to 97.5%.Respondents were considered current e-cigarette users if they self-reportedusing e-cigarettes ‘daily’ or ‘less than daily’ at the time of the survey. Descriptivestatistics and multivariate logistic regression were conducted. Assessed correlatesincluded: age, education, quit attempts in past 12 months, cigarettes smoked perday, and monthly expenditures on cigarettes.ResultsOverall, 46.7% of respondents were aware of e-cigarettes, 2.9% ever used,and 0.8% currently used. Most current e-cigarette users (93.0%) also currentlysmoked tobacco. Among male current tobacco smokers, adjusted odds ratio (AOR)of current e-cigarette use was higher among those aged 15–29 (AOR=2.5; 95%CI: 1.5–4.3) or 30–49 (AOR=1.9; 95% CI: 1.0–3.4) than those ≥50 years; thosewho attempted to quit in the past 12 months than those who did not (AOR=4.7;95% CI: 2.2–10.1); those with a college degree (AOR=3.4; 95% CI: 1.9–6.2) orjust finished high school (AOR=2.2; 95% CI: 1.2–4.2) than those who did notfinish high school; and those who smoked ≥15 cigarettes per day (AOR=2.8; 95%CI: 1.4–5.6) than those who smoked fewer.ConclusionsThese findings reveal that during 2013–2014, many urban Chineseadults were aware of e-cigarettes, while use was relatively low and most currentusers also smoked tobacco. Continued monitoring of e-cigarettes could helpinform public health policy, planning, and practice.
展开▼
