Quantifying cigarette and e-cigarette marketing exposure among Chinese adolescents using ecological momentary assessment.

INTRODUCTION: Addressing cigarette and e-cigarette use in China is key to reducing the global tobacco epidemic. Marketing exposure is one causal factor for adolescent smoking and e-cigarette use. Currently, China restricts cigarette and e-cigarette ads in public places and online; however, there may not be full policy compliance. We collected real-time data in the natural environment to estimate how much and where Chinese adolescents - a group susceptible to smoking and e-cigarette use - are exposed to cigarette and e-cigarette marketing to inform policy responses. METHODS: In June 2022, we conducted a seven-day ecological momentary assessment (EMA) study with 15-16-year-olds (n=96) across eight Chinese cities. Participants completed up to 42 EMA surveys (6 per day), sent at random intervals outside of school hours. In each survey, participants reported whether they saw (1) displays and (2) ads in the past hour (none, cigarette, e-cigarette, both) in the past hour. We also captured the source of cigarette/e-cigarette ad exposure. RESULTS: Most participants were exposed to cigarette and/or e-cigarette displays (89.6%) or ads (79.2%) over the seven days. On average, participants reported past-hour exposure to displays 12.7 times and past-hour exposure to ads 10.8 times over the week. The most common sources of cigarette ads were public places (e.g., kiosks, supermarkets); the most common sources of e-cigarette ad exposure were social media/internet or e-cigarette stores. CONCLUSIONS: Findings highlight the need to enhance enforcement of restrictions on cigarette and e-cigarette ads in public places and online in China and extend restrictions to ban displays. IMPLICATIONS: Marketing exposure is a causal factor in youth smoking and e-cigarette use. We used ecological momentary assessments to estimate cigarette and e-cigarette display and ad exposure among Chinese adolescents. On average, participants reported past-hour exposure to cigarette and/or e-cigarette displays 13 times and past-hour exposure to cigarette and/or e-cigarette ads 11 times over one week. Most saw ads in public places and online. Results suggest strengthening implementation of China's ban on cigarette and e-cigarette ads in public places and online and banning product displays. These are policy responses that can contribute to reducing adolescent cigarette and e-cigarette uptake in China.

Exposure to and Appeal of Tobacco Ads and Displays in China: A Qualitative Exploration of Chinese Youth Perceptions.

INTRODUCTION: Adolescents are uniquely vulnerable to nicotine addiction, and smoking is common among male adolescents in China. Although China implemented a ban on cigarette and e-cigarette advertising in public places, Chinese youth remain exposed to this marketing, which may contribute to future use. AIMS AND METHODS: From December 2021 to January 2022, we conducted 20 online focus group discussions with 119 adolescents in 10 Chinese cities to explore sources of tobacco marketing exposure, defined as exposure to cigarette and e-cigarette ads and product displays, and what features made marketing attractive. RESULTS: All groups discussed exposure to tobacco ads/displays in public places, including locations near their home or school. Nearly all groups discussed that exposure to online tobacco ads was common, particularly exposure to e-cigarette commercial ads and posts made by classmates or friends selling e-cigarettes. Most groups identified how eye-catching colors, imagery, product packaging, and price promotions featured in e-cigarette ads/displays attracted their attention. CONCLUSIONS: Results suggest Chinese adolescents are exposed to cigarette and e-cigarette ads and displays, many of which are placed in youth-friendly locations and contain youth-appealing features. IMPLICATIONS: Only a handful of studies have examined the influence of cigarette and e-cigarette advertising on youth in the context of China. Prior research has established the relationship between youth exposure to tobacco marketing and increased susceptibility to future use. Our findings emphasize the importance of effectively enforcing and expanding restrictions on cigarette and e-cigarette marketing in order to protect youth from exposure and future smoking/vaping initiation.

Effects of cigarette price and packaging on hypothetical quit-smoking behaviour: a discrete choice experiment among Vietnamese adults who smoke.

INTRODUCTION: Raising cigarette prices, increasing graphic health warning label (HWL) coverage and requiring plain packaging could reduce cigarette smoking in Vietnam. This discrete choice experiment estimates the potential impact of these policies on smoking behaviour. METHODS: In February-May 2022, we conducted a phone-based, cross-sectional survey of 1494 Vietnamese adults who smoke. Participants were randomly assigned to view four individual cigarette pack images, varied on price (15 000 (reference group); 20 000; 30 000 or 40 000 Vietnamese dong (VND)) and packaging (branded pack with 50% graphic HWL (reference group); branded pack with 85% graphic HWL; plain pack with 50% graphic HWL or branded pack without HWL). Participants responded if they would quit or continue smoking if they could only purchase the pack shown. We used binomial logistic regressions to estimate the relative risk (RR) of price and packaging on hypothetical quitting. RESULTS: Participants were more likely to report they would quit when presented with 30 000 VND (RR 1.20, 95% CI 1.07 to 1.35) and 40 000 VND packs (RR 1.40, 95% CI 1.23 to 1.58) vs the 15 000 VND pack. Participants were also more likely to report they would quit when shown the branded pack with 85% HWL (RR 1.30, 95% CI 1.18 to 1.42) and plain pack with 50% HWL (RR 1.34, 95% CI 1.21 to 1.49) vs the branded pack with 50% HWL coverage. Participants had significantly lower quit likelihood (RR 0.41, 95% CI 0.35 to 0.48) when shown the branded pack without a HWL. CONCLUSIONS: Results suggest raising cigarette prices to at least 30 000 VND, implementing larger graphic HWLs or plain packaging could decrease smoking rates in Vietnam.