The role of IQOS risk perceptions on cigarette smoking behaviours: results from a prospective pilot study

BACKGROUND

IQOS is a heated tobacco product marketed as an alternative to combustible cigarette smoking. Little is known about cigarette smokers' IQOS health risk perceptions and if these risk perceptions impact IQOS use and cigarette smoking behaviour.

METHODS

Adult, daily, non-treatment-seeking cigarette smokers (n=27), naïve to IQOS, were recruited from Philadelphia, Pennsylvania, USA. Participants were introduced to IQOS and then completed measures of risk perceptions. Participants were given an IQOS 2.4 holder, charger and HeatSticks, and asked to switch completely from cigarettes to IQOS for 14 days. The effects of risk perceptions on changes in IQOS use, cigarettes per day (CPD), the substitution of IQOS for cigarettes and motivation to quit smoking were evaluated.

RESULTS

Over the 14-day switch period, CPD significantly decreased (B=-0.18, 95% CI=-0.26 to -0.09, p<0.0001), IQOS use significantly increased (B=0.02, 95% CI=0.00 to 0.03, p=0.042), as did the percentage IQOS HeatSticks that replaced CPD (B=0.02, 95% CI=0.01 to 0.03, p=0.005). Participants who perceived IQOS as less risky than cigarettes used fewer IQOS HeatSticks per day. A lower percentage of IQOS HeatStick substitution for cigarettes was observed for participants with higher versus lower risk perceptions (B=-0.14, 95% CI=-0.28 to -0.01, p=0.042). Motivation to quit increased from a mean of 5.53 to 6.79 on the contemplation ladder from baseline to day 14 (B=1.26, 95% CI=0.54 to 1.97, p<0.001).

CONCLUSIONS

Smokers reduced their smoking rate and increased motivation to quit smoking while using IQOS. IQOS risk perceptions did not directly account for reductions in smoking, although they may contribute indirectly through increased IQOS use.

Tobacco minimum packaging policy to reduce cigarillo use among young people: results of an experimental study

OBJECTIVE

The Food and Drug Administration has the authority to set a minimum for cigar pack size, a product feature linked to price. This study examined the effects of cigarillo package size and price on young adults' smoking and purchase intentions.

DESIGN

Young adults (n=1032) 18-30 years old who smoked cigarillos in the past 12 months completed an online 3×2 within-subjects experiment testing the effects of cigarillo pack size (1, 2, 5) and price (actual price, standardised price per stick) on intentions to purchase and smoke cigarillos. We modelled the main effects and interactions of pack size and price on intentions to buy and smoke cigarillos overall and by cigarillo use frequency.

RESULTS

Intentions to buy and smoke were strongest for lower priced singles and two packs compared with higher priced five packs. Under standardised price conditions, participants preferred larger packs, but under actual pricing conditions smaller packs, especially two packs, were preferred. Participants who smoked cigarillos less than monthly were more likely to buy and smoke the least expensive products (buy: singles actual price adjusted OR (aOR)=4.51, 95% CI 3.76 to 5.42; two packs actual price aOR=9.76, 95% CI 8.11 to 11.75; five packs standardised price aOR=3.17, 95% CI 2.89 to 3.48) with the strongest preference for two packs and singles.

CONCLUSIONS

Young adult cigarillo smokers prefer smaller packs in conditions where pricing incentivises smaller packs. Minimum pack size policies may reduce the appeal of cigarillos among young adults, especially less frequent cigarillo smokers. Pack size policy should take into consideration price, and ideally these two factors should be addressed together.

Trends in unit sales of cooling flavoured e-cigarettes, USA, 2017-2021

OBJECTIVE

Flavours that produce a cooling sensation, such as menthol, enhance the appeal of e-cigarettes among youth; but not all e-cigarettes that produce cooling sensations are labelled as menthol. This study assessed trends in unit sales of cooling flavoured e-cigarettes in the USA.

DESIGN

E-cigarette retail sales during 26 January 2017 to 28 November 2021 were licensed from Information Resources, Inc, which records brick-and-mortar retail scanner sales but not online or vape shop sales. Cooling flavours were identified using six descriptors: menthol, ice, cool, chill, freeze or frost; ambiguous flavours were verified using online searches. Cooling flavours were categorised by characterising flavour (menthol, mint, other) and product type (prefilled cartridges, disposables, e-liquids). Joinpoint regression was used to assess sales and price trends.

RESULTS

During January 2017 to November 2021, unit sales of cooling flavoured e-cigarettes increased by 693.0% (1.5 to 12.0 million units); the percentage of these sales from total sales increased from 26.4% to 54.9%. Among cooling flavours, percentage of menthol sales decreased from 94.5% to 73.0% (p<0.001). Among menthol cooling flavours, percentage of prefilled cartridges increased from 67.2% to 96.6% (p<0.001); among non-menthol cooling flavours, percentage of disposable e-cigarettes increased from 5.2% to 99.2% (p<0.001). There were no significant price differences between cooling and non-cooling flavoured disposable e-cigarettes.

CONCLUSION

The percentage of cooling flavoured e-cigarette sales from total sales doubled during 2017-2021, and sales of non-menthol cooling disposable e-cigarettes experienced the highest percentage increase. Cooling flavoured e-cigarettes are important to consider when developing strategies to address flavoured e-cigarette use among youth.

Levels of nicotine and tobacco-specific nitrosamines in oral nicotine pouches

BACKGROUND

Nicotine pouches without tobacco are new products that deliver nicotine into the body via the oral mucosa. There is a lack of independent research on the chemical composition and product characteristics of these products, contributing to uncertainties regarding product regulation. This study sought to address knowledge gaps by assessing levels of nicotine and screening for tobacco-specific nitrosamines (TSNAs) in a sample of these products.

METHODS

Nicotine pouches (n=44) and nicotine-free pouches (n=2) from 20 different manufacturers were analysed regarding their contents of nicotine and TSNAs by gas chromatography with flame ionisation and liquid chromatography-tandem mass spectrometry, respectively. Product labelling and pH values of aqueous extracts were determined.

RESULTS

Nicotine contents of products ranged from 1.79 to 47.5 mg/pouch; median product weight, pH, and proportion of free-base nicotine were 0.643 g, 8.8, and 86%, respectively. A clear labelling of the nicotine content was missing on 29 products and nicotine strength descriptions were ambiguous. TSNAs were detected in 26 products, with a maximum of 13 ng N-nitrosonornicotine/pouch.

CONCLUSION

Although nicotine pouches may potentially be a reduced risk alternative for cigarette smokers or users of some other oral tobacco products, nicotine contents of some pouches were alarmingly high. Presence of carcinogenic TSNAs in the nicotine pouches is of serious concern. Better manufacturing processes and quality control standards should be implemented. Labels of nicotine strength on most products are misleading. A strict regulation regarding nicotine contents and its labelling would be advisable.

Qualitative perspective on nicotine pouches from adults who smoke cigarettes in North Carolina

BACKGROUND

Little is known about how nicotine pouch products are perceived by people who smoke, including if they are perceived as a cessation aid or a substitute for when they cannot smoke. We qualitatively investigated the reactions and perceptions about On!, a leading brand of nicotine pouches.

METHODS

We conducted online semistructured interviews with 30 adults who smoke cigarettes. Participants viewed an On! brochure and an image of an opened nicotine pouch and were asked about their initial impression, who the intended user is, and how they thought of the product's safety compared with other tobacco and cessation products. Transcripts were independently coded and the data were analysed using thematic content analysis.

RESULTS

Among the participants, half identified as female and slightly more than half were white (n=16). The mean age was 43 years old. The following are the central themes that emerged: (1) participants perceived the concealability, flavours and packaging of On! as appealing to youth and young adults; (2) participants perceived nicotine pouches as a product that would supplement rather than replace tobacco use; and (3) the product raised health concerns, which decreased interest in trying nicotine pouches.

CONCLUSIONS

Participants believed that the On! nicotine pouch promotional material may promote youth and young adult nicotine product initiation and dual product use for people who smoke. Most viewed On! as a product to use with cigarettes, rather than a way to quit cigarettes. Increased surveillance of nicotine pouches is warranted to monitor the trajectory of this emerging tobacco product and prevent youth initiation.

Changes in smoking patterns and characteristics of Koreans using the Korea National Health and Nutrition Examination Survey 2013-2021 data

OBJECTIVES

This study explored factors related to Korean adults' smoking patterns and also the reasons for using new types of tobacco products.

STUDY DESIGN

Cross-sectional survey.

METHODS

Data from the Korea National Health and Nutrition Examination Survey from 2013 to 2021 were used. The prevalence of the use of electronic cigarettes (e-cigarettes) or heated tobacco products (HTPs) alone or in combination with conventional cigarettes (CC) and the reasons for using new tobacco products are presented. Factors associated with using new types of tobacco products alone or in combination with CC compared to exclusive CC users were identified using multinomial logistic regression analysis.

RESULTS

The prevalence of current smoking was 25.54% in 2013 and 23.05% in 2021, with no significant change. The prevalence of CC decreased from 23.39% in 2013 to 15.77% in 2021. The prevalence of new tobacco use in combination with CC did not show a definite trend. The prevalence of exclusive use of new tobacco was <1% until 2018 and has rapidly increased thereafter. Of the HTPs users, 46.68% responded with 'no cigarette smell' as the main reason for HTPs use, followed by 'It seems less harmful than cigarette' (19.19%), and 'It seems to be helpful for quitting smoking' (15.04%). Of the e-cigarette users, 45.19% responded 'It seems to be helpful for quitting smoking' as the main reason for e-cigarette use, followed by 'It is less harmful than cigarettes' (19.98%). Compared to CC users, new tobacco users were younger, had a higher household income or education, and used more nutritional supplements.

CONCLUSION

Regulations for newer tobacco products are more lenient than for traditional cigarettes, leading to misunderstandings, especially among women and young people. To increase awareness of the risks of these products, specific policies such as disclosure of ingredients, ban on online sales, and increase in consumption tax, are needed.

Evaluation of the effectiveness of the Indian government's policies to strengthen health warning labels on smokeless tobacco products: findings from the 2010-2019 Tobacco Control Project India Surveys

BACKGROUND

Smokeless tobacco (SLT) packaging in India had a single symbolic (a scorpion) health warning label (HWL) in 2009 covering 40% of the front surface. In 2011, it was replaced with four pictorial images. In 2016, HWLs were enlarged to 85% on the front and back. This study aimed to assess the effectiveness of the old (symbolic and smaller images) and larger HWLs.

METHODS

Data were from the Tobacco Control Project India Survey and included respondents who used SLT in Wave 1 (2010-2011, n=5911), Wave 2 (2012-2013, n=5613) and Wave 3 (2018-2019, n=5636). Using a repeated-measures design, weighted logistic regression models assessed whether there were changes in seven HWL effectiveness measures within the domains of awareness, salience, cognitive and behavioural responses. A cohort design was employed to test whether HWL effectiveness in Waves 1 and 2 was associated with quitting SLT in Waves 2 and 3, respectively.

RESULTS

The 2011 HWL revision did not result in any significant changes in HWL effectiveness. There was no significant change in HWL awareness and salience after larger HWLs were introduced in 2016, but respondents were more likely to consider SLT health risks (Wave 2=17.9%, Wave 3=33.6%, p<0.001) and quitting SLT (Wave 2=18.9%, Wave 3=36.5, p<0.001). There was no change in HWLs stopping SLT use (Wave 2=36.6%, Wave 3=35.2%, p=0.829); however, respondents were more likely to avoid looking at HWLs (Wave 2=10.1%, Wave 3=40.2%, p<0.001). Effectiveness of older, symbolic and smaller pictorial HWLs was not associated with quitting SLT.

DISCUSSION

There was no significant change in HWL effectiveness following the revision from a symbolic to a pictorial image, but enlarging pictorial images resulted in some improved cognitive and behavioural effects. Results suggested wear-out of HWL salience and that the effectiveness of warnings depends on both their design and time since implementation.

Tobacco, nicotine and counter-marketing promotions using Instagram's branded content tool

BACKGROUND

The social media conglomerate, Meta, has a policy prohibiting promotion of tobacco products, vaporisers, electronic cigarettes or other products that simulate smoking via their branded content tools. This study examines if branded Instagram posts comply with these self-regulatory efforts.

METHODS

We analysed the presence and content of tobacco/nicotine promotion, as well as counter-marketing, in a sample of 400 branded/paid partnership-labelled Instagram posts with tobacco/nicotine-related terms made between 31 July 2022 and 31 March 2023, gathered from Meta's CrowdTangle tool and classified by CrowdTangle as being in English.

RESULTS

Of the 217 active branded posts that mentioned or depicted tobacco/nicotine products, most promoted rather than countered the sale of such products (84.3% vs 15.7%, respectively). Posts originating from US Instagram users accounted for 42.6% of promotional content. After the USA, posts from Indonesia (19.1%), Pakistan (9.8%) and India (8.2%) were most frequent. Most posts were fully in English (74.9%). Posts featured hookah (39.4%), electronic nicotine delivery systems (ENDS) accessories (17.5%), ENDS devices and e-liquids (16.9%) and various types of cigars (15.3%). The majority of US posts promoted venues or events where tobacco/nicotine products were featured (71.8%). Almost half of all promotional posts (47.0%) were sponsored by tobacco industry accounts. Posts that encouraged cessation were primarily (47.1%) sponsored by non-government organisations.

CONCLUSION

Despite attempts at self-regulation, paid partnership posts promoting tobacco and nicotine products are present on Instagram, especially posts promoting venues and events that feature tobacco and nicotine use. Self-regulation of this content shows limited success, suggesting a need for federal oversight and additional counter-marketing in social media settings.

Effects of flavour and modified risk claims on nicotine pouch perceptions and use intentions among young adults who use inhalable nicotine and tobacco products: a randomised controlled trial

BACKGROUND

Availability of flavours and potential modified risk tobacco product (MRTP) claims may influence young adults' (YAs') perceptions of and intentions to use nicotine pouches ('pouches').

METHODS

YAs aged 21-34 years (N=47, M age=24.5, SD=3.1) with past-month nicotine/tobacco use (10.6% cigarette-only, 51.1% e-cigarette-only, 38.3% dual use) and no intention to quit were randomised to self-administer four Zyn 3 mg nicotine pouches in a 4 (flavour; within-subjects: smooth, mint, menthol, citrus) × 2 (MRTP claim on packaging; between subjects: present or absent) mixed-factorial design. After self-administering each pouch, participants reported appeal, use intentions and perceived harm compared with cigarettes and e-cigarettes. Three mixed-factorial analysis of variances (ANOVAs) examined main and interactive effects of flavour and MRTP claim on appeal, use intentions and comparative harm perceptions.

RESULTS

Mint (M=55.9, SD=26.4), menthol (M=49.7, SD=26.8) and citrus (M=46.6, SD=24.8) flavours were significantly more appealing than smooth (M=37.6, SD=25.4; p<0.001). MRTP claim did not significantly affect product appeal (p=0.376). Use intentions were greater for mint (M=2.6, SD=1.3) and menthol (M=2.0, SD=1.1) flavours than smooth (M=1.8, SD=1.0; p=0.002). Flavour did not affect comparative harm perceptions (p values>0.418). MRTP claims increased use intention (p=0.032) and perceptions of pouches as less harmful than cigarettes (p=0.011), but did not affect perceived harm relative to e-cigarettes (p=0.142). Flavour × MRTP claim interactions were not significant.

CONCLUSIONS

Flavoured (vs smooth) pouches were more appealing to YAs. MRTP claims reduced perceived harm of pouches compared with cigarettes; however, intentions to switch were low. To protect YAs' health, regulatory restrictions could target flavours and MRTP claims.

Characteristics of Cheyenne little filtered cigar Instagram ads, 2019-2020

INTRODUCTION

Little is known about little filtered cigar (LFC) marketing on social media. We examined the characteristics of Instagram posts by Cheyenne-a popular LFC brand-from 2019 to 2020.

METHODS

We conducted a content analysis of 323 images posted in 2019 and 2020. Descriptive statistics were examined, and χ2 and Fisher's exact tests were used to test differences by year.

RESULTS

Most posts (76.0%) showed ≥1 pack and/or LFC stick, which look highly similar to cigarette packs and sticks. The pack was often flavoured (62.2%). Images of lit LFC sticks increased from 2019 (12.2%) to 2020 (26.7%, p=0.005). Warning labels were present on the ad in 79.9% of posts, but always at the bottom, and used the same single warning statement that they are not a safe alternative to cigarettes. The depiction of people nearly doubled from 2019 (18.1%) to 2020 (34.8%, p=0.001), and women (50.6%) were more commonly depicted than men (32.1%). Popular depictions and themes included the outdoors (57.6%) and seasonal imagery (36.2%) among others.

DISCUSSION

Cheyenne actively used Instagram to market its product and grow its brand. Posts seemed designed to promote the similarity of their LFC to cigarettes, through depictions of cig-a-like packs/sticks. Although warning labels were prevalent on Cheyenne Instagram posts, the warnings were not compliant with FDA warning guidelines and might have been counterproductive by emphasising their viability as cigarette alternatives rather than their dangerous health effects. Future surveillance is needed, and regulation of LFC advertising on social media may be warranted.

Assessing use of inhalable nicotine products within complex markets: the dilemma of heated tobacco products

The introduction of electronic inhalable products, such as nicotine vaping products (NVPs) and heated tobacco products (HTPs), has further diversified the nicotine market landscape. This poses unique challenges in measuring self-reported nicotine use behaviours, which have been the hallmark of tobacco surveillance systems. This paper raises concerns of potential measurement error for electronic inhalable product use in surveys due to similarities in product design between NVPs and HTPs, as well as changing trends in cannabis administration. We identify several strategies for addressing this issue (eg, including descriptive preambles in surveys that differentiate product classes from one another; incorporating survey questions that probe beyond an initial question regarding product use). In the absence of comprehensive validation studies, caution is warranted when interpreting survey results that rely on self-reported HTP use.

Effect of sweet flavouring on the rewarding and reinforcing value of cigarillo use among young adults

INTRODUCTION

Cigarillos dominate the US cigar market, and young adults largely drive use. While young adults prefer flavoured to non-flavoured cigarillos, especially those flavoured to taste like fruit or other sweets, the factors that underlie this preference have received little attention. We sought to determine if key indicators of abuse liability, the rewarding and reinforcing effects, are greater for sweet versus non-flavoured cigarillos.

METHODS

Young adults (18-24 years old) completed three laboratory visits assessing the subjective rewarding value (exposure paradigm), relative reinforcing value (computerised choice task) and absolute reinforcing value (ad libitum cigarillo smoking session) of sweet-flavoured versus non-flavoured cigarillos. General linear regression models were fit with the appropriate family link for each outcome measure.

RESULTS

Young adults rated sweet-flavoured cigarillos as more rewarding (estimated marginal mean (EMM) =4.52, 95% CI 4.00 to 5.03) than the non-flavoured cigarillo (EMM=3.31, 95% CI 2.80 to 3.83; B=1.20, 95% CI 0.80 to 1.60, p<0.001). The reinforcing value of sweet-flavoured cigarillos, measured by break point, was higher relative to non-flavoured cigarillos (6.34 out of 10), especially among young adults with a preference for flavoured cigarillos (B=1.94, 95% CI 0.71 to 3.18, p=0.003). Young adults took 1.9 times the number of puffs (35.75 vs 19.95) from sweet-flavoured cigarillos compared with non-flavoured cigarillos (Rate Ratio =1.94, 95% CI 1.30 to 2.90, p<0.001).

CONCLUSIONS

Sweet flavouring increases the abuse liability of cigarillos among young adults as reflected in greater liking, motivation to use and actual use. Banning sweet flavouring in cigarillos may diminish their use in young adults.Trial registration number CT.gov (NCT05092919).

An electronic cigarette pod system delivering 6-methyl nicotine, a synthetic nicotine analog, marketed in the United States as "PMTA exempt"

As of April 14, 2022, the United States Food and Drug Administration (FDA) has been authorized to regulate tobacco products containing nicotine from any source, including synthetic, requiring manufacturers to submit a premarket tobacco product application (PMTA). A recent report by the World Health Organization (WHO) warned that non-nicotine tobacco alkaloids or other synthetic nicotine analogs could be used by manufacturers to bypass regulatory schemes focusing on nicotine alone. From October 2023 on, vape stores in the United States started selling a new electronic cigarette pod system, named Spree Bar, advertised as "PMTA exempt", with youth-appealing flavors and advertising. The products are marketed as containing "Metatine", a trademarked name for 6-methyl nicotine, a synthetic nicotine analog patented by a Chinese electronic cigarette manufacturer. Here we used liquid chromatography-mass spectrometry (LCMS) to confirm the presence of a chemical species with the molecular weight of 6-methyl nicotine in Spree Bar e-liquids. The FDA needs to determine whether, in its view, 6-methyl nicotine is a form of "nicotine" within the meaning of the Tobacco Control Act, or whether 6-methyl nicotine can be regulated as a drug under the Federal Food, Drug, and Cosmetic Act (FDCA).

Substitutability of menthol cigarette alternatives: a clinical trial

INTRODUCTION

This study assessed the substitutability of plausible combustible menthol cigarette alternatives (MCAs) for usual brand menthol cigarettes (UBMCs) in adults who smoke menthol cigarettes.

METHODS

Following three in-lab sampling sessions, 80 adults aged 21-50 who smoke menthol cigarettes chose their preferred MCA: (1) a menthol roll-your-own cigarette (mRYO), (2) a menthol filtered little cigar (mFLC) or (3) a non-menthol cigarette (NMC). Participants were instructed to completely substitute their preferred MCA for their UBMC for 1 week and complete daily diaries documenting adherence and subjective effects. At the final lab visit, participants completed concurrent choice and cross-price elasticity tasks with their substitute product and UBMC as the comparator.

RESULTS

Most (65%) participants chose mRYO as their preferred product, followed by NMC and mFLC. Adherence to MCA was high for all products across the week (range: 63%-88%). Positive subjective effects for mRYO decreased over time but remained numerically higher than the other MCA products; craving reduction also decreased for NMC across phases. In the progressive ratio task, participants chose their UBMC in 61.7% of choices; this did not differ by preferred MCA, although the median breakpoint was highest for mRYO and similar for mFLC and NMC. Cross-price elasticity comparing UBMC and the preferred product indicated high substitutability of each MCA at phase 3 (I values -0.70 to -0.82).

CONCLUSIONS AND RELEVANCE

mRYOs were the most preferred MCA among the study products, but all MCAs were acceptable substitutes for UBMC using behavioural and economic measures in a short-term trial period.Trial registration number NCT04844762.

Including the term 'tobacco-free nicotine' in the nicotine addiction warning label mandated by the US Food and Drug Administration alters risk perceptions and use intentions

BACKGROUND

The US Food and Drug Administration (FDA) requires a warning label on nicotine e-cigarettes and pouches: 'This product contains nicotine. Nicotine is an addictive chemical'. Some brands marketing synthetic nicotine products have modified the warning ('This product contains tobacco-free nicotine (TFN)…'). The public health impact of altering the warning is unknown, so we examined its impact on risk perceptions and use intentions.

METHODS

1000 participants completed an anonymous online survey. Participants viewed the black-and-white FDA and TFN-modified warning labels in isolation, in a randomised order and reported on perceived addictiveness and, secondarily, use intentions. Participants then selected which label conveyed the most harm overall. Generalised estimating equations (GEEs) were used to evaluate the impact of label type and participant characteristics on perceived addictiveness and, secondarily, use intentions. Multivariable logistic regression was used to evaluate relationships between participant characteristics and choosing which label conveyed the most harm.

RESULTS

Overall, the TFN-modified label was associated with lower addictiveness ratings but not increased use intentions. Where significant interactions between label type and participant characteristics emerged, TFN-modified labelling was associated with disproportionately reduced risk perceptions or increased use intentions among vulnerable populations (eg, underage individuals, racially minoritised groups). 25.5% of participants selected the TFN-modified label as conveying the most harm, with younger individuals (<21 years) significantly less likely to choose the TFN-modified label.

CONCLUSIONS

Modifying the FDA-mandated nicotine warning label to include 'tobacco-free nicotine' may negatively impact public health, so the FDA should enforce inclusion of its original required warning label.

Association between e-cigarette use and food insecurity among low-income adults

INTRODUCTION

Previous research quantifying the relationship between tobacco use and food insecurity has focused on cigarette smoking. E-cigarette use has become popular in recent years. Drawing on large, population-based survey data, this study augments the previous research, considering the association of e-cigarette use with food insecurity among low-income adults.

METHODS

We analysed data from the California Health Interview Survey in 2014-2019. The study sample consisted of 25 948 respondents aged 18-64 who lived in low-income (<200% of the Federal Poverty Level) households. Multivariable logistic regression models were estimated to examine the associations of e-cigarette use as well as dual use of e-cigarettes and cigarettes with food insecurity.

RESULTS

Of California low-income adults, 6.4% identified as current e-cigarette users (3.0% dual users of e-cigarettes and cigarettes, and 3.4% sole e-cigarette users) and 43.0% reported food insecurity. After controlling for confounding factors, food insecurity was significantly more likely to be reported among current e-cigarette users (adjusted OR (AOR)=1.67; 95% CI 1.25 to 2.23) compared with never e-cigarette users, and among dual users (AOR=2.21; 95% CI 1.63 to 3.00), current sole e-cigarette users (AOR=1.66; 95% CI 1.15 to 2.40), and current sole cigarette smokers (AOR=1.46; 95% CI 1.22 to 1.76) compared with never tobacco users. The odds of food insecurity among dual users were significantly greater than sole cigarette smokers but not statistically different from sole e-cigarette users.

CONCLUSIONS

Using e-cigarette is an associated risk factor for food insecurity among low-income adults. Dual use of e-cigarettes and cigarettes has a significantly greater risk of food insecurity compared with smoking cigarettes alone.

MRTP claim authorisation and General Snus sales in the USA: evidence from a difference-in-differences model

BACKGROUND

The 2009 Tobacco Control Act granted the US Food and Drug Administration (FDA) regulatory authority over tobacco products, including the ability to authorise modified-risk tobacco product (MRTP) claims. In October 2019, the FDA authorised the first-ever MRTP claim for General Snus, which allowed the product to be marketed as reduced risk (relative to cigarettes). MRTP authorisation may increase otherwise low rates of snus use in the USA (<0.5% for children and adults).

METHODS

Using 2017-2021 Nielsen sales data from 19 US states, we conducted a difference-in-differences analysis to determine whether logged unit sales of General Snus were affected by the MRTP authorisation, compared with (1) sales of other snus brands and (2) sales of non-snus smokeless products; we also examined (3) if sales of non-General Snus brands were affected by General Snus's MRTP authorisation, compared with sales of non-snus smokeless tobacco products.

RESULTS

Although sales declined in absolute terms, sales of General Snus relative to other snus brands were unchanged after MRTP authorisation (-9.0%, 95% CI -19.6% to 1.60%, p=0.098). However, compared with non-snus smokeless brand sales, sales of General Snus (+14.7%, 95% CI 5.23% to 24.2%, p=0.002) rose after MRTP authorisation. Compared with non-snus smokeless products, sales of non-General Snus brands also rose after MRTP authorisation (+23.7%, 95% CI 9.5% to 38.0%, p=0.001).

CONCLUSIONS

Although only General Snus received MRTP authorisation, this designation appears to have slowed declines for the entire snus category. This suggests consumers may make determinations regarding product risk to a product class rather than individual products.