Does Adding Information on Toxic Constituents to Cigarette Pack Warnings Increase Smokers' Perceptions About the Health Risks of Smoking? A Longitudinal Study in Australia, Canada, Mexico, and the United States

Effects of reduced nicotine content cigarette advertising with warning labels and social media features on product perceptions among young adults

This study sought to understand reactions to very low nicotine (VLN) cigarette advertising compared with conventional cigarette advertising with consideration of warning labels and social media context. The online experimental study recruited young adult cigarette smokers and nonsmokers (N = 1,608). Participants completed a discrete choice task with a 2 × 2 × 3 mixed design: brand, (VLN, Marlboro), context (Ad only, Ad on social media), and warning (Text-only, Well-known risk pictorial, or Lesser-known risk pictorial). Participants made choices about attention, appeal, harm, buying, and quitting intentions. Social media context increased attention and appeal. A well-known risk pictorial warning outperformed a text-only warning. Smokers had increased odds of quit intentions for VLN ads, yet nonsmokers had increased intentions to buy cigarettes on social media with a text-only warning. Results indicate differences in how young adults react to cigarette ads on social media, especially with the warnings they portray.

Perceived message effectiveness of cigar warning themes among adults in the United States

Most tobacco warnings focus on health harms to the consumer, but other message themes may be promising. We assessed perceived message effectiveness (PME) among adults who smoke cigars for 12 cigar warning statements to discourage smoking, and measured PME across four message themes: explicit health effects to the consumer, secondhand smoke effects, chemicals/constituents, and toxicity. Between April 23 and May 7, 2020, we conducted an online study with U.S. adults who used any cigar type in the past 30 days (n = 777). Participants were randomly assigned to view two out of 12 warnings and rate each one on PME. We analyzed PME mean ratings (range 1 [low] to 5 [high]). The warning statements for lung cancer (M = 3.91) and heart disease (M = 3.77) had the highest PME ratings; secondhand smoke (M = 3.50) and formaldehyde (M = 3.48) had the lowest PME ratings. Multilevel analyses showed that the explicit health effects theme was associated with higher PME ratings compared to other warning themes (ps < 0.05 for chemicals/constituents and secondhand smoke effects) except toxicity (p =.16). Higher awareness of consequences was associated with higher PME ratings (p <.001). Higher nicotine dependence was also associated with higher PME ratings (p = .004). Warning statements with information addressing the themes of health harms and toxicity could potentially inform those who smoke cigars about the broader harms of cigar use and should be considered in FDA labeling regulations for cigars.

Disparities in self-reported exposure to tobacco marketing among youth and young adults from low-socioeconomic status neighbourhoods in Mexico City

Exposure to tobacco marketing is positively associated with smoking initiation and behaviours. There is limited literature examining disparities among reported exposure in low- and middle-income countries. This study sought to fill this gap with a survey among 1427 adolescents and 889 adult smokers in Mexico City in 2020. Data were analysed using chi-square and hierarchical regression models. Two-thirds of adolescents noticed cigarette pack displays in stores. Participants from low- and mid-socioeconomic status (SES) neighbourhoods were more exposed to tobacco marketing than their counterparts through several channels. After addressing the shared variance among participants from the same household nested in neighbourhood SES level and controlling for gender, adolescent non-smokers and adult smokers who noticed pack displays were more likely to be susceptible to smoking (OR = 1.8, 95% CI 1.4-2.4) and to smoke more (OR = 1.7, 95% CI 1.21-2.47); adult smokers who noticed tobacco marketing at more places were less likely to be certain about smoking risks (OR = 0.9, 95% CI 0.8-0.9). The results suggest that the tobacco industry targets youth and individuals from low-SES neighbourhoods through several channels. Greater exposure to tobacco marketing was associated with increased susceptibility to smoking and decreased risk perception. These findings support a comprehensive ban on tobacco marketing in Mexico.

The impacts of including information about the number of carcinogens in smoke on standardized cigarette packs in the UK

BACKGROUND

Since May 2017, standardized packaging has been mandatory in the UK, with packs required to display an 'information message' explaining that there are more than 70 carcinogens in tobacco smoke.

METHODS

Three waves of a longitudinal online survey in the UK with smokers pre-standardized packaging (Wave 1: April-May 2016) and followed up post-standardized packaging (Wave 2: September-November 2017, Wave 3: May-July 2019). Of the 6233 smokers at Wave 1, 4293 responded at Wave 2 and 3175 at Wave 3. We explored knowledge of the number of carcinogens in smoke, and whether knowing that smoke contains more than 70 carcinogens mediated change in the belief that the dangers of smoking are exaggerated (risk perception), stubbing out cigarettes, quit intentions and quitting. As the information message is larger on roll-your-own packs than on cigarette packs, as the packs are larger, we also explored whether there was any difference in knowing that smoke contains more than 70 carcinogens between exclusive cigarette smokers and exclusive roll-your-own smokers.

RESULTS

Knowledge that there are over 70 carcinogens in smoke increased among smokers across waves, with the increase from Waves 1 to 3 greater for exclusive roll-your-own smokers than exclusive cigarette smokers (adjusted odds ratio=1.44; 95% CI 1.03-2.03). Knowledge that there are over 70 carcinogens in smoke mediated higher risk perception but not stubbing cigarettes out, quit intentions or quitting.

CONCLUSIONS

The information message improved knowledge of how many carcinogens are in smoke, particularly among exclusive roll-your-own smokers, and this was linked to higher risk perception.

Effective package warning label systems for communicating relative risks of cigarettes, heated tobacco products, and e-cigarettes: An experimental study with Korean adults

BACKGROUND

Warning labels are a fundamental public health strategy for communicating about tobacco product risks, but effective warning labels for heated tobacco products (HTPs) and e-cigarettes (ECs) are yet to be determined. We examined the effect of two warning label systems for communicating the relative risks of using cigarettes, HTPs, and ECs.

METHODS

1,280 Korean adults were recruited from an online commercial panel, including susceptible non-users of cigarettes, HTPs, or ECs aged 19 to 29 (n = 444) and current users of these tobacco products aged 19 or older (n = 836). Participants viewed packages for cigarettes, HTPs, and ECs in a 2 × 2 between-subject experiment: "dashboard" icons integrated into warnings vs. no dashboard; different-sized warnings (70% of cigarette packages, 50% of HTP packs, 30% of EC packages) vs. current equal-sized warnings (50% of cigarette/HTP/EC packages).

RESULTS

Participants exposed to the dashboard warning system were more likely than those who were not to report higher perceived harm of cigarettes than ECs, cigarettes than HTPs, and HTPs than ECs, as well as perceived benefit of switching from cigarettes to HTPs, cigarettes to ECs, and HTPs to ECs. Participants exposed to the different-sized warning system did not report differences in perceived relative harm or benefit compared to those who were not, and no interaction of dashboard warnings with warning sizes was found.

CONCLUSION

The use of dashboard icons with texts and colors representing different levels of risk may promote public understanding about the continuum of risk across tobacco products.

The effectiveness of graphic health warnings on tobacco products: a systematic review on perceived harm and quit intentions

BACKGROUND

Examination of the format and framing of the graphic health warnings (GHWs) on tobacco products and their impact on tobacco cessation has received increasing attention. This review focused on systematically identifying and synthesizing evidence of longitudinal studies that evaluate different GHW formats and specifically considered GHW influence on perceived risk of tobacco use and quit intentions.

METHODS

Ten databases were systematically searched for relevant records in December 2017 and again in September 2019. Thirty-five longitudinal studies were identified and analyzed in terms of the formatting of GHWs and the outcomes of perceived risk and quit intentions. Quality assessment of all studies was conducted.

RESULTS

This review found graphics exceeding 50% of packs were the most common ratio for GHWs, and identified an ongoing reliance on negatively framed messages and limited source attribution. Perceived harms and quit intentions were increased by GHWs. However, wear-out effects were observed regardless of GHW format indicating the length of time warnings are present in market warrants ongoing research attention to identify wear out points. Quit intentions and perceived harm were also combined into a cognitive response measure, limiting the evaluation of the effects of each GHW format variables in those cases. In addition, alternative GHW package inserts were found to be a complimentary approach to traditional GHWs.

CONCLUSIONS

This review demonstrated the role of GHWs on increasing quit intentions and perceptions of health risks by evaluating quality-assessed longitudinal research designs. The findings of this study recommend testing alternate GHW formats that communicate quit benefits and objective methodologies to extend beyond self-report.

Effect of Cigarette Constituent Messages With Engagement Text on Intention to Quit Smoking Among Adults Who Smoke Cigarettes: A Randomized Clinical Trial

IMPORTANCE

The US Food and Drug Administration (FDA) is required to communicate the risks of tobacco constituents to the public. Few studies have addressed how FDA media campaigns can effectively communicate about cigarette smoke constituents.

OBJECTIVE

To examine whether messages about cigarette smoke constituents are effective in reducing smoking intentions and behaviors among adults who smoke.

DESIGN, SETTING, AND PARTICIPANTS

This randomized clinical trial enrolled participants who were aged between 18 and 65 years, were English speakers, were living in the United States, and who smoked at least 100 cigarettes during their lifetime and now smoked every day or some days. Participants received daily messages via email for 15 days. Participants were randomized to 1 of 2 message conditions or a control group and reported their previous-day smoking behaviors daily. Follow-up surveys were conducted on days 16 and 32. Data were collected from June 2017 to April 2018 and analyzed from April to September 2018.

INTERVENTIONS

The 3 groups were (1) constituent plus engagement messages (eg, "Cigarette smoke contains arsenic. This causes heart damage.") that included the FDA as the source and engagement text (eg, "Within 3 months of quitting, your heart and lungs work better. Ready to be tobacco free? You can quit. For free nicotine replacement, call 1-800-QUIT-NOW"); (2) constituent-only messages that did not list the FDA as the source or include engagement text; and (3) a control condition with messages about littering cigarette butts.

MAIN OUTCOMES AND MEASURES

The primary outcome was the change in quit intentions (range, 1-4, with higher scores indicating stronger intentions) from pretest to day 16. Secondary outcome measures included daily smoking behaviors and quit attempts.

RESULTS

A total of 789 participants (mean [SD] age, 43.4 [12.9] years; 483 [61.2%] women; 578 [73.3%] White; 717 [90.9%] non-Hispanic) were included in the study. The mean (SD) quit intention score was 2.5 (0.9) at pretest. Mean (SE) change in quit intention score from pretest to day 16 was 0.19 (0.07) points higher in the constituent plus engagement condition than in the control condition (P = .005) and 0.23 (0.07) points higher in the constituent-only condition compared with the control condition (P = .001). Participant reports of cigarettes smoked, forgone, and butted out were similar across study conditions at baseline and did not differ significantly at days 16 and 32 across study conditions. Viewing more messages was associated with an estimated decrease of 0.15 (SE, 0.01) cigarettes smoked per day per message viewed overall across conditions.

CONCLUSIONS AND RELEVANCE

To our knowledge, this is the first longitudinal test of cigarette constituent campaign messages in a national sample of adults who currently smoke. Messages about cigarette smoke constituents, with or without engagement text and source information, increased participants' intentions to quit, lending support to FDA efforts to educate consumers about such constituents.

TRIAL REGISTRATION

ClinicalTrials.gov Identifier: NCT03339206.

Smoking load reduction is insufficient to downregulate miR-301b, a lung cancer promoter

Several circulating miRNAs identified in the plasma of smokers have been implicated as promoters of nasopharyngeal and lung carcinoma. To investigate the plasma profile of miRNAs in subjects who reduces the number of smoked cigarettes and who quit after six months. We accompanied 28 individuals enrolled in a Smoking Cessation Program over 6 months. At Baseline, clinical characteristics, co-morbidities, and smoking history were similar among subjects. After 6 months, two groups were defined: who successfully quitted smoking (named "quitters", n = 18, mean age 57 years, 11 male) and who reduced the number of cigarettes smoked (20-90%) but failed to quit smoking (named "smokers", n = 10, mean age 52 years, 3 male). No significant clinical changes were observed between groups at baseline and after a 6-month period, however, quitters showed significant downregulations in seven miRNAs at baseline: miR-17 (- 2.90-fold, p = 0.029), miR-20a (- 3.80-fold, p = 0.021); miR-20b (- 4.71-fold, p = 0.027); miR-30a (- 3.95-fold, p = 0.024); miR-93 (- 3.63-fold, p = 0.022); miR-125a (- 1.70-fold, p = 0.038); and miR-195 (- 5.37-fold, p = 0.002), and after a 6-month period in 6 miRNAs: miR-17 (- 5.30-fold, p = 0.012), miR-20a (- 2.04-fold, p = 0.017), miR-20b (- 5.44-fold, p = 0.017), miR-93 (- 4.00-fold, p = 0.041), miR-101 (- 4.82-fold, p = 0.047) and miR-125b (- 3.65-fold, p = 0.025). Using time comparisons, only quitters had significant downregulation in miR-301b (- 2.29-fold, p = 0.038) after 6-month. Reductions in the number of smoked cigarettes was insufficient to change the plasma profile of miRNA after 6 months. Only quitting smoking (100% reduction) significantly downregulated miR-301b related to hypoxic conditions, promotion of cell proliferation, decreases in apoptosis, cancer development, and progression as increases in radiotherapy and chemotherapy resistance.

Can Removing Tar Information From Cigarette Packages Reduce Smokers' Misconceptions About Low-Tar Cigarettes? An Experiment From One of the World's Lowest Tar Yield Markets, South Korea

INTRODUCTION

Despite regulations that forbid cigarette packages from displaying messages such as "mild," "low-tar," and "light," many smokers still have misperceptions about "light" or "low-tar" cigarettes. One reason may be that tar amount displays continue to be permitted. This study examines whether removing tar delivery information from packaging reduces consumer misperceptions about "low-tar" cigarettes.

METHODS

An online experiment was conducted in South Korea among 531 smokers who were randomly assigned to one of two conditions: with and without tar information on cigarette packages. Participants evaluated which type of cigarette was mildest, least harmful, easiest for nonsmokers to start smoking, and easiest for smokers to quit.

RESULTS

Ten out of 12 chi-square tests showed that people judged the lowest reported tar delivery cigarette to be the mildest (p < .01), least harmful (p < .05), easiest to start (p < .05), and easiest to quit (p < .05)-less so in the "no-tar" condition than the "tar" condition. A higher level of misbeliefs about supposed low-tar cigarettes were found in the "tar" condition compared to the "no-tar" condition for all three brands (t = 5.85, 4.07, 3.82, respectively, p < .001). Regression analyses showed that the "no-tar" condition negatively predicted the level of misbeliefs after controlling for demographic and smoking-related variables (B [SE] = -.72 (.12), -.50 (.12), -.48 (.13), respectively, p < .001).

CONCLUSIONS

Banning reported tar deliveries from cigarette packages is likely to reduce smokers' misconceptions about "low-tar" cigarettes. When reported tar deliveries are absent, smokers have inconsistent judgments about differently packaged cigarettes.

IMPLICATIONS

When cigarette packages depict lower reported tar number deliveries, participants erroneously perceive them to be less harmful than packages displaying higher tar numbers. These misperceptions of harm may prompt smokers who might otherwise attempt to quit smoking to instead consume cigarettes with lower tar deliveries due to the mistaken belief that they will reduce their risk.

Perceptions of the impact of non-standard work schedules on health in Australian graduates: an exploratory study

Non-standard working hours are associated with negative health outcomes. However, little is known about the early years of exposure to non-standard work hours, or whether workers new to these work schedules perceive their work as impacting their health. This limits our ability to develop meaningful intervention strategies for transitioning into non-standard work hour schedules. This exploratory study investigated whether recent Australian graduates in various non-standard workhour schedules perceive that their work schedule negatively impacts their health. The responses of 120 graduates within four years of completing their tertiary qualification collected from an online survey were analysed. Graduates were asked whether they perceived their work arrangements as impacting their health. Significantly more of those who were engaged in non-standard work schedules or worked beyond contracted hours perceived their working arrangements as having an impact on their health. This study highlights the importance of studying workers' perceptions of the impact of work hours on health, particularly when workers may be experiencing good global health but be at risk for negative health outcomes in future.

Knowledge and Awareness of Added Sugar in Cigarettes

INTRODUCTION

Sugars naturally occur in tobacco leaf but are also commonly added to cigarettes by tobacco companies. Added sugar increases levels of toxic chemicals in cigarette smoke. Little is known about smokers' knowledge of added sugar in cigarettes and awareness of its effects.

METHODS

Adult cigarette smokers were recruited through Amazon Mechanical Turk to participate in an online experiment on electronic cigarette advertising. After completing the experiment, participants (N = 4351) answered two items assessing knowledge and awareness of added sugar in cigarettes. Participants had the option of providing open-ended comments about the overall study, and two reviewers read and independently coded comments pertaining to the sugar items.

RESULTS

Only 5.5% of participants responded "yes" to the question: "Is sugar added to cigarettes?", and only 3.8% of participants indicated being aware that added sugar increases toxins in cigarette smoke. Forty-eight participants mentioned the sugar items when asked to comment about the overall questionnaire. Fifty-two percent of these comments expressed an interest in obtaining more information about added sugar, and 23% described the sugar items as interesting or informative. Three participants commented that learning about added sugar motivated them to quit or cut down on smoking.

CONCLUSIONS

Among a large sample of smokers, few reported knowledge of added sugar in cigarettes and awareness of its effects. Further, several smokers expressed an interest in learning more about added sugar. Messages about added sugar in cigarettes may be a promising new angle for campaigns to discourage smoking.

IMPLICATIONS

Few American smokers are aware that sugar is added to cigarettes, and some participants expressed a desire to learn more about this additive. Given such low awareness, the interest among smokers, and increased popular concerns about added sugar in foods and beverages, messaging about added sugar in cigarettes should be developed and tested for inclusion in public health media campaigns.

An Eye Tracking Study of Anti-Smoking Messages on Toxic Chemicals in Cigarettes

The US Food and Drug Administration is tasked with communicating information to the public about the harmful chemicals in cigarette smoke. Our study used eye tracking method to test the effectiveness of messages about the harmful chemicals in cigarettes smoke among adult smokers. A sample size of 211 current cigarette smokers viewed four communication messages that included: Health effects of a chemical in cigarette smoke and an image depicting the health effect. The messages focused on arsenic, formaldehyde, uranium, and general health. Eye tracking recorded the length of time participants viewed the text and the image. After each message, the participants were asked about the messages' effectiveness in changing attitudes towards smoking. We analyzed the data using multilevel modeling, and of the 211 smokers, 59.7% were female, 36.5% were Black, and 21.3% had a high school degree or less. Compared to the general message, the messages about formaldehyde and uranium were more discouraging to smoking (p < 0.05). Messages about formaldehyde were more believable and made participants want to quit more than the general messages. Increasing message dose was significantly associated with discouraging participants from smoking and made participants want to quit (p < 0.05). Our findings suggest that anti-smoking messages, containing chemical information, can successfully increase negative attitudes toward smoking cigarettes and potentially encourage quitting.

Exposure to and perceptions of health warning labels on nicotine vaping products: findings from the 2016 International Tobacco Control Four Country Smoking and Vaping Survey

BACKGROUND AND AIMS

The presence and content of health warning labels (HWLs) on nicotine vaping products (NVPs), such as electronic cigarettes, varies by country and manufacturer. We compared proportions of people who report (i) noticing HWLs on NVPs and (ii) feeling concerned having noticed HWLs, by country and by smoking or vaping status. We also examined recall of HWL content and whether this varies by country.

DESIGN

Cross-sectional survey.

SETTING

Australia (AU), Canada (CA), England (EN) and the United States (US). At the time of data collection, HWLs on NVPs were only mandatory in EN.

PARTICIPANTS

A total of 11 561 respondents from the following samples in the 2016 International Tobacco Control Four Country Project: (1) re-contacted smokers and quitters who had participated in the previous wave of the project; (2) newly recruited current smokers and recent quitters; and (3) newly recruited current vapers from CA, EN and US.

MEASUREMENTS

Outcomes included: (1) having noticed HWLs on NVPs, (2) feeling concerned having noticed HWLs, and (3) recall of HWL message content.

FINDINGS

Compared with respondents in EN, respondents in CA were more likely to report having noticed HWLs [odds ratio (OR) = 1.58, P = 0.02], whereas respondents in AU (OR = 0.76, P = 1.00) and the US (OR = 1.54, P = 0.09) were not significantly more or less likely to report having noticed HWLs. Compared with concurrent smokers and vapers, daily smokers, non-daily smokers and quitters were less likely to report having noticed HWLs (ORs = 0.21, 0.33 and 0.19, respectively, all P < 0.001). There were no significant differences in reports of noticing HWLs when comparing concurrent smokers and vapers with daily (OR = 1.62, P = 0.91) or non-daily (OR = 1.15, P = 1.00) vapers. There were no significant differences by country in reporting that HWLs made them concerned about using NVPs. Daily vapers were less likely to report feeling concerned than concurrent users (OR = 0.11, P = 0.017). Among those who reported reading HWLs (n = 688), there was little evidence of differences in recall of the HWL content.

CONCLUSIONS

Respondents in England, where health warning labels on nicotine vaping products are mandatory, were not significantly more likely to report having noticed such warnings than those in Australia, Canada and the United States where warnings are not mandatory.

Communicating about chemicals in cigarette smoke: impact on knowledge and misunderstanding

BACKGROUND

The USA must publicly share information about harmful and potentially harmful constituents (chemicals) in tobacco products. We sought to understand whether webpages with chemical information are "understandable and not misleading to a lay person."

METHODS

Participants were a national probability sample of US adults and adolescents (n=1441, 18% smokers). In an online experiment, we randomly assigned participants to view one of the developed webpages (chemical names only, names with quantity ranges, names with visual risk indicators) or no webpage in phase one (between subjects). Participants completed a survey assessing knowledge, misunderstanding, perceived likelihood, perceived severity of health effects from smoking and quit intentions (smokers only). In phase two (within subjects), participants viewed all three webpage formats and reported webpage perceptions (clarity, usability, usefulness) and perceived impact (affect, elaboration, perceived effectiveness).

RESULTS

In phase one, viewing any webpage led to more knowledge of chemicals (48%-54% vs 28% no webpage, ps<0.001) and health harms (77% vs 67% no webpage, ps<0.001). When exposed to any webpage, 5%-23% endorsed misunderstandings that some cigarettes are safer than others. Webpage format did not affect knowledge or reduce misunderstandings. Viewing any webpage led to higher perceived likelihood of experiencing health effects from smoking (p<0.001) and, among smokers, greater intentions to quit smoking (p=0.04). In phase two, where participants viewed all formats, a visual risk indicator led to the highest perceived impact.

CONCLUSIONS

Knowledge of chemicals and health effects can increase after viewing a website. Yet, websites may not correct the misunderstanding that some cigarettes are safer.

Cigarette pack messages about toxic chemicals: a randomised clinical trial

Background

The USA can require tobacco companies to disclose information about harmful and potentially harmful chemicals in cigarette smoke, but the impact of these messages is uncertain. We sought to assess the effect of placing messages about toxic chemicals on smokers’ cigarette packs.

Methods

Participants were 719 adult cigarette smokers from California, USA, recruited from September 2016 through March 2017. We randomly assigned smokers to receive either factual messages about chemicals in cigarette smoke and their health harms (intervention) or messages about not littering cigarette butts (control) on the side of their cigarette packs for 3 weeks. The primary trial outcome was intention to quit smoking.

Results

In intent-to-treat analyses, smokers whose packs had chemical messages did not have higher intentions to quit smoking at the end of the trial than those whose packs had control messages (P=0.56). Compared with control messages, chemical messages led to higher awareness of the chemicals (28% vs 15%, P<0.001) and health harms (60% vs 52%, P=0.02) featured in the messages. In addition, chemical messages led to greater negative affect, thinking about the chemicals in cigarettes and the harms of smoking, conversations about the messages and forgoing a cigarette (all P<0.05).

Discussion

Chemical messages on cigarette packs did not lead to higher intentions to quit among smokers in our trial. However, chemical messages informed smokers of chemicals in cigarettes and harms of smoking, which directly supports their implementation and would be critical to defending the messages against cigarette company legal challenges.

Trial registration number

NCT02785484.