Scientific Journal Articles
Showing 26-50 of 532 Results
Park, et al. 2019. Attitudes of Korean smokers toward smoke-free public places: findings from the longitudinal ITC Korea Survey, 2005-2010 [access full article]
Objective: Prior to December 2012, restaurants in South Korea were required to implement only partial smoking bans. This study documents the changes in Korean smokers' attitudes towards smoking bans between 2005 and 2010 and explores the effects of anti-smoking advertising as a correlate of support for total smoking bans in public places.
Design: Longitudinal cohort study of Korean adult smokers.
Settomg: The data were derived from three waves (2005, 2008 and 2010) of the International Tobacco Control (ITC) Korea Survey.
Participants: The ITC Korea Survey respondents were a probability-based, nationally representative sample of Korean smokers aged 19 and older. The current analysis includes 995 smokers who participated in Wave 1 (2005), 1737 smokers who participated in Wave 2 (2008) and 1560 smokers who participated in Wave 3 (2010).
Primary and Secondary Outcome Measures: Changes in respondents' awareness of secondhand smoke (SHS) harm, attitudes towards smoking bans and personal rules for smoking in private homes and/or vehicles were analysed. Correlates of support for smoking bans in public places were examined using generalised estimating equation regression models.
Results: More than 80% of Korean smokers are aware of the harms of SHS. The proportion of smokers who support smoke-free restaurants or smoke-free bars increased twofold between 2005 and 2010. Smokers who were aware of the dangers of SHS were more likely to support a total smoking ban in workplaces. Noticing anti-smoking advertising or information was not significantly associated with support for a total smoking ban in public places.
Conclusions: Korean smokers became more supportive of smoking bans in public places between 2005 and 2008. These results show that smokers' attitudes towards smoking bans can change with the implementation of smoke-free policies, even in a country that has a high prevalence of smokers.[download PDF]
Passos, et al. 2019. Dynamic, data-driven typologies of long-term smoking, cessation and their correlates: Findings from the International Tobacco Control (ITC) Netherlands Survey [access full article]
Rationale: Efforts towards tobacco control are numerous, but relapse rates for smoking cessations remain high. Behavioral changes necessary for continuous cessation appear complex, variable and subject to social, biological, psychological and environmental determinants. Currently, most cessation studies concentrate on short-to midterm behavioral changes. Besides, they use fixed typologies, thereby failing to capture the temporal changes in smoking/cessation behaviors, and its determinants.
Objective: To obtain long-term, data-driven longitudinal patterns or profiles of smoking, cessation, and related determinants in a cohort of adult smokers, and to investigate their dynamic links. Methods: The dataset originated from the International Tobacco Control (ITC) Netherlands Project, waves 2008 to 2016. Temporal dynamics of smoking/cessation, psychosocial constructs, and time-varying determinants of smoking were extracted with Group-Based Trajectory Modeling technique. Their associations were investigated via multiple regression models.
Results: Substantial heterogeneity of smoking and cessation behaviors was unveiled. Most respondents were classified as persistent smokers, albeit with distinct levels of consumption. For a minority, cessation could be sustained between 1 and 8 years, while others showed relapsing or fluctuating smoking behavior. Links between smoking/cessation trajectories with those of psychosocial and sociodemographic variables were diverse. Notably, changes in two variables were aligned to behavioral changes towards cessation: decreasing number of smoking peers and attaining a higher self-perceived control.
Conclusion: The unveiled heterogeneity of smoking behavior over time and the varied cross-dependencies between smoking data-driven typologies and those of underlying risk factors underscore the need of individually tailored approaches for motivational quitting.[download PDF]
Driezen, et al. 2019. State-level affordability of factory-made cigarettes among current US smokers: Findings from the ITC US Survey, 2003-2015 [access full article]
Cigarette affordability measures the price smokers pay for cigarettes in relation to their incomes. Affordability can be measured using the relative income price of cigarettes (RIP), or the price smokers pay to purchase 100 packs of 20 cigarettes divided by their per capita household income. Using longitudinal data from 7046 smokers participating in the International Tobacco Control (ITC) US Survey, the purpose of this study was to test whether affordability significantly changed following the US federal tax increase implemented on 1 April 2009. This study also estimated temporal trends in affordability from 2003–2015 at state and national levels using small area estimation methods and segmented linear mixed effects regression models. RIP increased slightly during 2003–2008. This was followed by a 30% increase during 2008–2010, indicating cigarettes were less affordable after the federal tax increase. RIP continued to increase during 2010–2013 but decreased during 2013–2015, suggesting cigarettes have recently become more affordable for US smokers. State-level trends in RIP were consistent with overall national trends. Controlling for other factors, a $1 increase in the state excise tax was significantly associated with a 9% increase in RIP, indicating state taxes reduced affordability. Tax-induced price increases must keep pace with underlying economic conditions to ensure cigarettes do not become more affordable over time.[download PDF]
Sharma, et al. 2019. Awareness and interest in lung cancer screening among current and former smokers: Findings from the ITC United States Survey [access full article]
Purpose: To examine the awareness of low-dose computed tomography (LDCT) lung cancer screening among a population of current and former smokers using a nationally representative sample from the United States.
Methods: Data for this study come from Wave 9 of the International Tobacco Control (ITC) United States Survey, conducted between 2013 and 2015. Among respondents age ≥ 40 (n = 1145), a 50% random sample were asked a series of questions pertaining to lung cancer screening. This study examines awareness and screening behaviors in relationship to demographic characteristics of respondents, health beliefs, psychosocial behaviors, and smoking behaviors. Descriptive tables and χ2 tests were used to examine the association between those who were aware and unaware. Logistic regression analyses were conducted, stratified on respondents’ smoking status. Data were weighed to be representative of the current smoking population in the US.
Results: Overall, 52% of current and former smokers reported being aware of lung cancer screening. Among the group with no prior screening, 80.6% said they would take a lung cancer screening exam if recommended by their physician. In the multivariate models, former smokers had significantly greater awareness of lung cancer screening compared to current smokers [odds ratio 1.42 (95% confidence interval 1.03, 1.97)].
Conclusions: Awareness of LDCT lung cancer screening was lower among current smokers compared to former smokers. Most smokers who had not ever been screened said they would have lung cancer screening if it were recommended by their physician, demonstrating the need for healthcare providers to encourage those eligible for screening to[download PDF]
Hammond, et al. 2019. Prevalence of vaping and smoking among adolescents in Canada, England, and the United States: repeat national cross-sectional surveys [access full article]
Objective: To examine differences in vaping and smoking prevalence among adolescents in Canada, England, and the United States.
Design: Repeat cross sectional surveys.
Setting: Online surveys in Canada, England, and the US.
Participants: National samples of 16 to 19 year olds in 2017 and 2018, recruited from commercial panels in Canada (n=7891), England (n=7897), and the US (n=8140).
Main outcome measures: Prevalence of vaping and smoking was assessed for use ever, in the past 30 days, in the past week, and on 15 days or more in the past month. Use of JUUL (a nicotine salt based electronic cigarette with high nicotine concentration) and usual vaping brands were also assessed. Logistic regression models examined differences in vaping and smoking between countries and over time.
Results: The prevalence of vaping in the past 30 days, in the past week, and on 15 days or more in the past month increased in Canada and the US between 2017 and 2018 (P<0.001 for all), including among non-smokers and experimental smokers, with no changes in England. Smoking prevalence increased in Canada (P<0.001 for all measures), with modest increases in England, and no changes in the US. The percentage of ever vapers who reported more frequent vaping increased in Canada and the US (P<0.01 for all), but not in England. The use of JUUL increased in all countries, particularly the US and Canada—for example, the proportion of current vapers in the US citing JUUL as their usual brand increased threefold between 2017 and 2018.
Conclusions: Between 2017 and 2018, among 16 to 19 year olds the prevalence of vaping increased in Canada and the US, as did smoking in Canada, with little change in England. The rapidly evolving vaping market and emergence of nicotine salt based products warrant close monitoring.[download PDF]
2019. Cross-country comparison of cigarette and vaping product marketing exposure and use: Findings from the 2016 ITC Four Country Smoking and Vaping Survey [access full article]
Objective: To compare exposure to and use of certain cigarette and vaping product marketing among adult smokers and vapers in four countries with contrasting regulations—Australia (AU), Canada, England and the USA.
Data sources: Adult smokers and vapers (n=12 294) from the 2016 International Tobacco Control (ITC) Four Country Smoking and Vaping Survey (4CV1).
Analysis: Self-reported exposure to cigarette and vaping product advertising through point-of-sale, websites/social media, emails/texts, as well as exposure to and use of price offers were assessed for country differences using logistic regression models adjusted for multiple covariates.
Results: Reported exposure to cigarette advertising exposure at point-of-sale was higher in the USA (52.1%) than in AU, Canada and England (10.5%–18.5%). Exposure to cigarette advertising on websites/social media and emails/texts was low overall (1.5%–10.4%). Reported exposure to vaping ads at point-of-sale was higher in England (49.3%) and USA (45.9%) than in Canada (32.5%), but vaping ad exposure on websites/social media in Canada (15.1%) was similar with England (18.4%) and the USA (12.1%). Exposure to vaping ads via emails/texts was low overall (3.1%–9.9%). Exposure to, and use of, cigarette price offers was highest in the USA (34.0 % and 17.8 %, respectively), but the use rate among those exposed was highest in AU (64.9%). Exposure to, and use of, price offers for vaping products was higher in the USA (42.3 % and 21.7 %) than in AU, Canada and England (25.9%–31.5 % and 7.4%–10.3 %).
Conclusions: Patterns of cigarette and vaping product marketing exposure generally reflected country-specific policies, except for online vaping ads. Implications for research and policy are discussed.[download PDF]
Craig, et al. 2019. The impact of the WHO FCTC on tobacco control: Perspectives from stakeholders in 12 countries. [access full article]
Background: The WHO Framework Convention on Tobacco Control (WHO FCTC), the first WHO treaty, entered into force in 2005. In April 2015, a seven-member independent expert group (EG) was established by a decision of the FCTC Conference of the Parties to assess the impact of the Treaty in its first decade. One component of the EG’s methodology was to gather evidence on WHO FCTC impact from Parties themselves. This paper presents findings from 12 country missions on how the FCTC impacted progress on tobacco control.
Methods: Between November 2015 and May 2016, EG members conducted missions in 12 countries representing each of the six WHO regions and the four World Bank economic development levels. In each country, the EG interviewed a broad range of stakeholders to assess the extent to which the FCTC had contributed to tobacco control. The primary objective was to assess whether tobacco control measures would have been developed or passed, or implemented at all, or as quickly, if there had been no FCTC. Through this counterfactual inquiry, the EG sought to determine the FCTC’s causal role.
Conclusion: The FCTC was reported to have made contributions along the entire policy/regulation process: the development of a measure, building legislative and political support for a measure and its implementation. These stakeholder perspectives support the conclusion that the FCTC has played a pivotal role in accelerating and strengthening the implementation of tobacco control measures, although tobacco industry interference continues to be a significant obstacle to further advancement.[download PDF]
This study examines whether having health conditions or concerns related to smoking is associated with use of vaping products. Data came from the 2016 wave of the International Tobacco Control Four Country Smoking and Vaping Survey. Smokers and recent quitters (n = 11,344) were asked whether they had a medical diagnosis for nine health conditions (i.e., depression, anxiety, alcohol problems, severe obesity, chronic pain, diabetes, heart disease, cancer, and chronic lung disease) and concerns about past and future health effects of smoking, and their vaping activities. Respondents with depression and alcohol problems were more likely to be current vapers both daily (Adjusted odds ratio, AOR = 1.42, 95% confidence interval, CI 1.09–1.85, p < 0.05 for depression; and AOR = 1.52, 95% CI 1.02–2.27, p < 0.05 for alcohol) and monthly (AOR = 1.32, 95% CI 1.11–1.57 for depression, p < 0.01; and AOR = 1.43, 95% CI 1.06–1.90, p < 0.05 for alcohol). Vaping was more likely at monthly level for those with severe obesity (AOR = 1.77, 95% CI 1.29–2.43, p < 0.001), cancer (AOR = 5.19, 95% CI 2.20–12.24, p < 0.001), and concerns about future effects of smoking (AOR = 1.83, 95% CI 1.47–2.28, p < 0.001). Positive associations were also found between chronic pain and concerns about past health effects of smoking and daily vaping. Only having heart disease was, in this case negatively, associated with use of vaping products on their last quit attempt (AOR = 0.72, 95% CI 0.43–0.91, p < 0.05). Self-reported health condition or reduced health associated with smoking is not systematically leading to increased vaping or increased likelihood of using vaping as a quitting strategy.[download PDF]
Background: In 2009, the China National Tobacco Company (CNTC) began their Premiumization Strategy, designed to encourage smokers to trade up to more expensive brands, mainly by promoting the concept that higher class cigarettes are better quality and less harmful. This study is the first evaluation of the strategy’s impact on: (1) prevalence of premium brand cigarettes (PBC), mid-priced brand cigarettes (MBC) and discount brand cigarettes (DBC) over 9 years, from 3 years pre-strategy (2006) to 6 years post-strategy (2015); and (2) changes in reasons for choosing PBCs, MBCs and DBCs.
Methods: A representative cohort of adult Chinese smokers (n=9047) in seven cities who participated in five waves of the International Tobacco Control (ITC) China Survey: pre-implementation (Wave 1 (2006; n=3452), Wave 2 (2007–2008; n=3586)); mid-implementation (Wave 3 (2009; n=4172)); and post-implementation (Wave 4 (2011–2012; n=4070), Wave 5 (2013–2015; n=2775)). Generalised estimating equations were conducted to examine changes in prevalence of PBCs, MBCs and DBCs, and reasons for brand choice from pre-implementation to post-implementation.
Results: From pre-implementation to post-implementation, there was an increase in prevalence of PBCs (5.4% to 23.2%, p<0.001) and MBCs (40.0% to 50.4%, p<0.001), and a decrease in DBCs (54.6% to 26.5%, p<0.001). There was an increase in smokers who chose their current brand because they believed it to be less harmful, both for MBC smokers (+13.0%, p=0.001) and PBC smokers (+9.0%, p=0.06). There was an increase for smokers in all brand classes for choosing their current brand because they were ‘higher in quality’ and because of affordable price, but the greatest increase was among PBC smokers (+18.6%, p<0.001 and +34.9%, p<0.001, respectively).
Conclusions: Our findings demonstrate that the rising trend in Chinese smokers’ choice of ‘less harmful’, ‘higher quality’ and ‘affordable’ cigarettes, particularly PBCs, is likely due to CNTC’s aggressive marketing strategies. Strong tobacco control policies that prohibit CNTC’s marketing activities are critical in order to dispel erroneous beliefs that sustain continued smoking in China, where the global tobacco epidemic is exerting its greatest toll.[download PDF]
Ngo, et al. 2019. Analysis of gender differences in the impact of taxation and taxation structure on cigarette consumption in 17 ITC countries [access full article]
Although increasing taxes has been established as the most effective tobacco control policy, it is not clear whether these policies reduce cigarette consumption equally among women and men. In this study, we examine whether the association between taxation/taxation structure and cigarette consumption differs by gender. The data is from the International Tobacco Control Policy Evaluation (ITC) Projects in 17 countries. Cigarette consumption was measured by gender for each ITC country. Generalized estimating equations (GEE) were employed to investigate gender differences in the association between cigarette consumption and tax structures, while controlling for time-variant demographic characteristics such as unemployment rates, proportions of adults, and percent of female population. Tiered tax structures are associated with higher cigarette consumption among both males and females. Female smokers are more responsive to an average tax increase than male smokers. Among males, higher ad valorem share in excise taxes is associated with lower cigarette consumption, but it is not the case for females. Females may not be as responsive to the prices raised by ad valorem taxes, despite being responsive to average taxes, suggesting that smokers by gender may face different prices.[download PDF]
Demjén, et al. 2019. The purchase sources of and price paid for cigarettes in six European countries: Findings from the EUREST-PLUS ITC Europe Surveys [access full article]
Introduction: Tobacco tax policies have been proven to be effective in reducing tobacco consumption, but their impact can be mitigated through price-minimizing behaviours among smokers. This study explored the purchase sources of tobacco products and the price paid for tobacco products in six EU member states.
Methods: Data from Wave 1 of the EUREST-PLUS ITC Europe Survey collected from nationally representative samples of adult smokers in Germany, Greece, Hungary, Poland, Romania and Spain (ITC 6E Survey) were used. The ITC 6E Survey sample, conducted in 2016, randomly sampled 6011 adult cigarette smokers aged 18 years or older. Information on purchase sources of tobacco was examined by country. The difference in reported purchase price by purchase location (store vs non-store/other) was analysed using linear regression for each country.
Results: Tobacco purchasing patterns and sources varied widely between countries. Non-store/other purchases were very rare in Hungary (0.1%) while these types of purchases were more common in Germany (5.1%) and Poland (8.6%). Reported prices of one standard pack of 20 cigarettes were highest in Germany (4.80€) and lowest in Hungary (2.45€). While nonstore purchases were only made by a minority of smokers (>10% in all countries), the price differential was considerable between store and non-store/other sources, up to 2€ per pack in Greece and in Germany.
Conclusions: The results suggest a huge variation of purchasing sources and price differentials between store and non-store purchasing sources across the six EU member states examined. While the cross-sectional data precludes any causal inference, supply chain control through licensing as introduced in Hungary and the lack of such measures in the other countries might nevertheless be a plausible explanation for the large differences in the frequency of non-store purchases observed in this study.[download PDF]
Introduction: Having a chronic disease either caused or worsened by tobacco smoking does not always translate into quitting smoking. Although smoking cessation is one of the most cost-effective medical interventions, it remains poorly implemented in healthcare settings. The aim was to examine whether smokers with chronic and respiratory diseases were more likely to receive support to quit smoking by a healthcare provider or make a quit attempt than smokers without these diseases.
Methods: This population-based study included a sample of 6011 adult smokers in six European countries. The participants were interviewed face-to-face and asked questions on sociodemographic characteristics, current diagnoses for chronic diseases, healthcare visits in the last 12 months and, if so, whether they had received any support to quit smoking. Questions on smoking behavior included nicotine dependence, motivation to quit smoking and quit attempts in the last 12 months. The results are presented as weighted percentages with 95% confidence intervals (CI) and as adjusted odds ratios with 95% CI based on logistic regression analyses.
Results: Smokers with chronic respiratory disease, those aged 55 years and older, as well as those with one or more chronic diseases were more likely to receive smoking cessation advice from a healthcare professional. Making a quit attempt in the last year was related to younger age, high educational level, higher motivation to quit, lower nicotine dependence and having received advice to quit from a healthcare professional but not with having chronic diseases. There were significant differences between countries with smokers in Romania consistently reporting more support to quit as well as quit attempts.
Conclusions: Although smokers with respiratory disease did indeed receive smoking cessation support more often than smokers without disease, many smokers did not receive any advice or support to quit during a healthcare visit.[download PDF]
Driezen, et al. 2019. Cross-border purchasing of cigarettes among smokers in six countries of the EUREST-PLUS ITC Europe Surveys [access full article]
Introduction: The availability of lower-cost cigarettes in neighboring countries provides price-sensitive smokers with incentives to purchase cheaper out-of-country cigarettes. This study estimates the prevalence of and factors associated with cross-border purchasing of cheaper cigarettes among smokers from Germany, Greece, Hungary, Poland, Romania, and Spain. The prevalence of cross-border purchasing was estimated by residential location, defined as living in regions bordering a lower-price country (where prices were at least €1/pack lower), regions bordering a similar- or higher-price country, and internal non-border regions.
Methods: Data were from a survey of nationally representative samples of adult smokers (n=6011) from Germany, Greece, Hungary, Poland, Romania, and Spain. The primary outcome was purchasing cheaper out-of-country cigarettes in the previous six months. Residential location was defined using The Nomenclature of Territorial Units for Statistics (NUTS2 in Germany and NUTS3 in the other countries). Multivariable logistic regression tested differences in purchasing cheaper out-of-country cigarettes by country and residential location.
Results: Residential location was associated with purchasing cheaper out-of-country cigarettes in Germany and Poland (p<0.05): 31% of German and 11% of Polish smokers living in regions bordering lower-price countries reported purchasing cheaper out-of-country cigarettes in the previous six months. Smokers living in regions bordering lower-price countries had 4.21 times greater odds of purchasing cheaper out-of-country cigarettes compared to smokers living in non-border regions. Conclusions: Overall, only a minority of smokers in the six countries purchased cheaper cigarettes outside their country. However, smokers living in regions bordering countries where cigarettes were at least €1/pack lower than their home country had significantly higher odds of purchasing cheaper out-ofcountry cigarettes. This effect was especially prominent among German smokers. Tax harmonization policies designed to minimize crossborder price differentials can eliminate lower-priced alternatives for price-sensitive smokers.[download PDF]
Fix, et al. 2019. Cannabis use among a nationally representative cross-sectional sample of smokers and non-smokers in The Netherlands: Results from the 2015 ITC Netherlands Gold Magic Survey [access full article]
Objectives: Existing evidence shows that co-occurring use of tobacco and cannabis is widespread. Patterns of co-use of tobacco and cannabis may change as more jurisdictions legalise medicinal and/or recreational cannabis sales. This analysis examined predictors of current cannabis use and characterised methods of consumption among smokers and non-smokers in a context where cannabis use is legal.
Setting: The 2015 International Tobacco Control Netherlands—Gold Magic Survey conducted between July and August 2015.
Participants: Participants (n=1599; 1003 current smokers, 283 former smokers and 390 non-smokers) were asked to report their current (past 30-day) use of cigarettes and cannabis. Cigarette smokers reported whether they primarily used factory made of roll-your-own cigarettes. Those who reported any cannabis use in the last 30 days were asked about forms of cannabis used. X2and logistic regression analyses were used to assess relationships among combustible tobacco and cannabis use.
Results: Past 30-day cannabis use was somewhat higher among current tobacco (or cigarette) smokers (n=57/987=5.8%) than among former or never smokers (n=10/288=3.5% and n=6/316=1.9%, respectively). Joints were the most commonly used form of cannabis use for both current cigarette smokers (96.9%) and non-smokers (76.5%). Among those who smoked cannabis joints, 95% current smokers and 67% of non-smokers reported that they ‘always’ roll cannabis with tobacco.
Conclusions: In this Netherlands-based sample, most cannabis was reported to be consumed via smoking joints, most often mixed with tobacco. This behaviour may present unique health concerns for non-cigarette smoking cannabis users, since tobacco use could lead to nicotine dependence. Moreover, many non-cigarette smoking cannabis users appear to be misclassified as to their actual tobacco/nicotine exposure.[download PDF]
Yong, et al. 2019. Reasons for regular vaping and for its discontinuation among smokers and recent ex-smokers: Findings from the 2016 ITC Four Country Smoking and Vaping Survey [access full article]
Aims: To examine current and ex‐ smokers’ reasons for continuing or discontinuing regular use of nicotine vaping products (NVPs).
Design and participants: Cross‐sectional study of 2,722 current daily/weekly, and 921 ex‐daily/weekly, adult vapers who were either current or ex‐cigarette smokers when surveyed.
Setting: 2016 ITC Four Country Smoking and Vaping Wave 1 (4CV1) surveys conducted in the United States (n=1159), England (n=1269), Canada (n=964), and Australia (n=251).
Measurements: Current vapers were asked about the following reasons for regular NVP use: less harmful to others, social acceptance, enjoyment, use in smoke‐free areas, affordability, and managing smoking behaviour. Ex‐vapers were asked about the following reasons for discontinuing regular NVP use: addiction concerns, affordability, negative experiences, perceived social unacceptability, safety concerns, product dissatisfaction, inconvenience, unhelpfulness for quitting, unhelpfulness for managing cravings, and not needed for smoking relapse prevention. Possible correlates of NVP use and discontinuation, including smoking status, smoking/vaping frequency, quit duration (ex‐smokers only), country, age, and type of NVP device used, were examined using multivariate logistic regression models.
Findings: For current smokers, the top three reasons for current regular NVP use were: helpful for cutting down smoking (86%), less harmful to others (78%), and helpful for quitting smoking (77%). The top three reasons for discontinuing vaping were: not being satisfying (78%), unhelpfulness for cravings (63%), and unhelpfulness for quitting smoking (52%). For ex‐smokers, the top three reasons for current vaping were: enjoyment (91%), less harmful to others (90%) and affordability (90%); and for discontinuing were: not needed to stay quit (77%), not being satisfying (50%) and safety concerns (44%). Reported reasons varied by user characteristics, including age, country and NVP device‐type.
Conclusions: Regular use of nicotine vaping products is mainly motivated by its perceived benefits, especially for reducing or quitting smoking, whereas its discontinuation is motivated by perceived lack of such benefits, with some variation by user characteristics.[download PDF]
Thomas, et al. 2019. Predictors and reasons for quitting smoking and sustaining abstinence in a national cohort of Aboriginal and Torres Strait Islander smokers [access full article]
Introduction and Aims: The national prevalence of daily smoking among the Aboriginal and Torres Strait Islander population is 39% but falling. We explore factors associated with starting and sustaining quit attempts, and reasons given for quitting.
Design and Methods: We analysed data from the nationally representative quota sample of 759 Aboriginal and Torres Strait Islander adults who reported smoking at least weekly in the Talking About The Smokes baseline survey (April 2012–October 2013) who completed a follow‐up survey a year later (August 2013–August 2014).
Results: Having made more quit attempts, more recent quit attempts in the past, motivational attitudes, having been encouraged to quit by a health professional and having noticed tobacco advertising were associated with making a quit attempt between surveys. Having made longer quit attempts in the past, non‐daily smoking and quit self‐efficacy were associated with sustaining abstinence. But neither having made more quit attempts in the past nor dependence was associated with sustaining abstinence. Health concerns, price and setting an example to children were the most common reasons given by smokers and ex‐smokers for quitting.
Discussion and Conclusions: Different factors predict making and sustaining quit attempts among Aboriginal and Torres Strait Islander smokers. We need to rethink current messages that just encourage Aboriginal and Torres Strait Islander smokers to keep making quit attempts by increasing motivation to quit, as motivation and making more quit attempts does not predict eventual success. We could focus more on increasing smokers’ confidence that they can successfully quit.[download PDF]
Morphett, et al. 2019. Barriers and facilitators to switching from smoking to vaping: Advice from vapers [access full article]
Introduction and Aims: Information available to consumers about nicotine vaping products varies according to the regulatory environment. A common information source in Australia, where nicotine vaping products are highly regulated, is advice from vapers. The aim of this study was to report on what advice current vapers would give to someone new to vaping.
Design and Methods: Australian vapers were recruited in 2016 via the International Tobacco Control Four‐Country Smoking and Vaping survey of smokers and ex‐smokers, as well as a separate recruitment process that targeted vapers. A total of 384 of 559 eligible participants responded to an open‐ended question about barriers to switching from smoking to vaping, and what advice they would give to new vapers.
Results: While some participants reported switching from smoking to vaping easily, others described an adjustment period. Difficulties included learning about technical aspects of nicotine vaping products, finding the ‘right’ combination of device and liquid, and accessing nicotine liquid given that it cannot legally be sold. Many accounts of satisfaction with quitting smoking and improved health were provided.
Discussion and Conclusions: Advice from current vapers is likely to be particularly influential in Australia, where information about vaping is not easily available from health organisations or official government sources. This research shows that advice to new vaper centres around experimentation with devices and flavours and finding trustworthy suppliers of nicotine liquid. It provides an insight into the initial challenges associated with switching from smoking to nicotine vaping products in environments where access to nicotine liquid is highly restricted.[download PDF]
Borland, et al. 2019. A new classification system for describing the use of nicotine vaping products alongside cigarettes (so-called "dual-use"): Findings from the ITC 4-Country Smoking and Vaping Wave 1 Survey [access full article]
Aims: To determine whether a simple combination of level of smoking and level of vaping results in a useful typology for characterising smoking and vaping behaviours.
Methods: Cross‐sectional data from adults (≥18 years) in the 2016 Wave 1 ITC Four Country Smoking and Vaping Survey in the United States (n=2291), England (n=3591), Australia (n=1376), and Canada (n=2784) were used. Participants who either smoked, vaped or concurrently used both at least monthly were included and divided into 8 groups based on use frequency of each product (daily, non‐daily, no current use). This resulted in 4 concurrent use groups (predominant smokers, dual daily users, predominant vapers and concurrent non‐daily users). These groups were compared with each other and with the 4 exclusive use groups, on socio‐demographics, nicotine dependence, beliefs and attitudes about both products, and quit‐related measures using data weighted to reference population surveys in each country.
Results: 10.8% of the sample were concurrent users, with daily smokers vaping non‐daily (predominant smokers) constituting 51.6% of this group. All 8 categories differed from other categories on at least some measures. Concurrent daily nicotine users reported higher levels of indicators of nicotine dependence, and generally more positive attitudes toward both smoking and vaping than concurrent non‐daily users. Among daily nicotine users, compared with exclusive daily smokers, reports of interest in quitting were higher in all concurrent use groups. Dual daily users had the most positive attitudes about smoking overall, and saw it as the least denormalised, and at the same time were equally interested in quitting as other concurrent users and were most likely to report intending to continue vaping.
Conclusions: In Australia, Canada, England and the United States in 2016, daily nicotine users differed considerably from non‐daily nicotine users. Among daily nicotine users, dual daily users (those who smoke and vape concurrently) should be treated as a distinct grouping when studying relationships between smoking and vaping. The 8 level typology characterising concurrent and exclusive use of smoking and vaping should be considered when studying both products.[download PDF]
Cheng, et al. 2019. Prices, use restrictions, and electronic cigarette use: Evidence from ITC US of the 4CV1 (2016) Survey [access full article]
Aims: To determine if there are associations between changes in the explicit (i.e., price) and implicit (i.e., use restrictions in public places) costs of cigarettes and nicotine vaping products (NVPs) and their use patterns in the United States.
Methods: Data came from the Wave 1 (2016) US data of the ITC Four Country Smoking and Vaping Survey (ITC US 4CV1) and Nielsen Scanner Track database. A multiple logistic regression model was applied to estimate the likelihoods of NVP use (vaping at least monthly), cigarette/NVP concurrent use (vaping and smoking at least monthly), and switch from cigarettes to NVPs (had quit smoking < 24 months and currently vape) among ever smokers, conditioning upon cigarette/NVP prices, use restrictions and socio‐demographics.
Results: Living in places where vaping is allowed in smoke‐free areas was significantly associated with an increase in the likelihood of vaping (Marginal Effect, M.E. = 0.17; p<0.05) and the concurrent use of cigarettes and NVPs (M.E. = 0.11; p<0.05). Higher NVP prices were associated with decreased likelihood of NVP use, concurrent use, and complete switch (P>0.05). Higher cigarette prices were associated with greater likelihood of cigarette and NVP concurrent use (P>0.05). Working in places where vaping is banned is associated with lower likelihood of vaping and NVP and cigarette concurrent use (P>0.05).
Conclusions: Higher prices for nicotine vaping products (NVPs) and vaping restrictions in public places are associated with less NVP use and less concurrent use of vaping and smoking. Public policies that increase prices for vaping devices and supplies (i.e., regulations, taxes) and restrict where vaping is allowed are likely to suppress vaping.[download PDF]
Braak, et al. 2019. Where do vapers buy their vaping supplies? Findings from the International Tobacco Control (ITC) 4 Country Smoking and Vaping Survey [access full article]
Aim: This study examines where vapers purchase their vaping refills in countries having different regulations over such devices, Canada (CA), the United States (US), England (EN), and Australia (AU).
Methods: Data were available from 1899 current adult daily and weekly vapers who participated in the 2016 (Wave 1) International Tobacco Control Four Country Smoking and Vaping. The outcome was purchase location of vaping supplies (online, vape shop, other). Adjusted odds ratios and 95% confidence intervals were reported for between country comparisons.
Results: Overall, 41.4% of current vapers bought their vaping products from vape shops, 27.5% bought them online, and 31.1% from other retail locations. The vast majority of vapers (91.1%) reported using nicotine-containing e-liquids. In AU, vapers were more likely to buy online vs other locations compared to CA (OR = 6.4, 2.3–17.9), the US (OR = 4.1, 1.54–10.7), and EN (OR = 7.9, 2.9–21.8). In the US, they were more likely to buy from vape shops (OR = 3.3, 1.8–6.2) or online (OR = 1.9, 1.0–3.8) vs other retail locations when compared to those in EN. In CA, vapers were more likely to purchase at vape shops than at other retail locations when compared to vapers in EN (5.9, 3.2–10.9) and the US (1.87, 1.0–3.1).
Conclusions: The regulatory environment and enforcement of such regulations appear to influence the location where vapers buy their vaping products. In AU, banning the retail sale of nicotine vaping products has led vapers to rely mainly on online purchasing sources, whereas the lack of enforcement of the same regulation in CA has allowed specialty vape shops to flourish.[download PDF]
Gravely, et al. 2019. Prevalence of awareness, ever-use, and current use of NVPs among adult current smokers and ex-smokers in 14 countries with differing regulations on sales and marketing of NVPs: Cross-sectional findings from the ITC Project [access full article]
Aims: This paper presents updated prevalence estimates of awareness, ever‐use, and current use of nicotine vaping products (NVPs) from 14 International Tobacco Control Policy Evaluation Project (ITC Project) countries that have varying regulations governing NVP sales and marketing.
Design, setting, participants and measurements: A cross‐sectional analysis of adult (≥18 years) current smokers and ex‐smokers from 14 countries participating in the ITC Project. Data from the most recent survey questionnaire for each country were included, which spanned the period 2013 to 2017. Countries were categorized into four groups based on regulations governing NVP sales and marketing (allowable or not), and level of enforcement (strict or weak where NVPs are not permitted to be sold): (1) most restrictive policies (MRPs): not legal to be sold or marketed with strict enforcement: Australia, Brazil, Uruguay; (2) restrictive policies (RPs): not approved for sale or marketing with weak enforcement: Canada, Malaysia, Mexico, New Zealand (NZ); (3) less restrictive policies (LRPs): legal to be sold and marketed with regulations: England, Netherlands, Republic of Korea, United States (US); (4) no regulatory policies (NRPs): Bangladesh, China, Zambia. Countries were also grouped by World Bank Income Classifications. Country‐specific weighted logistic regression models estimated adjusted NVP prevalence estimates for: awareness, ever/current use, and frequency of use (daily vs. non‐daily).
Findings: NVP awareness and use were lowest in NRP countries. Generally, ever‐ and current use of NVPs were lower in MRP countries [ever‐use: 7.1% to 48.9%; current use: 0.3% to 3.5%] relative to LRP countries [ever‐use: 38.9% to 66.6%; current use: 5.5% to 17.2%] and RP countries [ever‐use: 10.0% to 62.4%; current use: 1.4% to 15.5%]. NVP use was highest among high income countries, followed by upper‐middle income countries, and then by lower‐middle income countries.
Conclusions: With a few exceptions, awareness and use of nicotine vaping products (NVPs) varies by the strength of national regulations governing NVP sales/marketing, and by country income. In countries with no regulatory policies, use rates were very low, suggesting that there was little availability, marketing and/or interest in NVPs in these countries where smoking populations are predominantly poorer. The higher awareness and use of NVPs in high income countries with moderately (e.g., Canada, NZ) and less (e.g., England, US) restrictive policies, is likely due to the greater availability and affordability of NVPs.[download PDF]
Nargis, et al. 2019. A decade of cigarette taxation in Bangladesh: Lessons learnt for tobacco control policy and practice [access full article]
Bangladesh has achieved a high share of tax in the price of cigarettes (greater than the 75% benchmark), but has not achieved the expected health benefits from reduction in cigarette consumption. In this paper we explore why cigarette taxation has not succeeded in reducing cigarette smoking in Bangladesh. Using government records over 2006–2017, we link trends in tax-paid cigarette sales to cigarette excise tax structure and changes in cigarette taxes and prices. We analysed data on smoking prevalence from Bangladesh Global Adult Tobacco Surveys to study consumption of different tobacco products in 2009 and 2017. Drawing on annual reports from tobacco manufacturers and other literature, we examine demand- and supply-side factors in the cigarette market. In addition to a growing affordability of cigarettes, three factors appear to have undermined the effectiveness of tax and price increases in reducing cigarette consumption in Bangladesh. First, the multitiered excise tax structure widened the price differential between brands and incentivized downward substitution by smokers from higher-price to lower-price cigarettes. Second, income growth and shifting preferences of smokers for better quality products encouraged upward substitution from hand-rolled local cigarettes (bidi) to machine-made low-price cigarettes. Third, the tobacco industry’s market expansion and differential pricing strategy changed the relative price to keep low-price cigarettes inexpensive. A high tax share alone may prove inadequate as a barometer of effective tobacco taxation in lower-middle income countries, particularly where the tobacco tax structure is complex, tobacco products prices are relatively low, and the affordability of tobacco products is increasing.[download PDF]
Introduction and Aims: Health behaviours, such as smoking and quitting, spread person-to-person through social networks. We explore how social networks are associated with making and sustaining quit attempts for at least 1 month among Aboriginal and Torres Strait Islander smokers.
Design and Methods: We analysed data from the nationally representative quota sample of 759 Aboriginal and Torres Strait Islander adults who reported smoking at least weekly in Talking About The Smokes baseline survey (April 2012-October 2013) who completed a follow-up survey a year later (August 2013-August 2014).
Results: At baseline, 41% of smokers reported that all of their five closest family or friends smoked, but 62% reported that family or friends had provided encouragement to quit. Fewer smokers with other adult smokers in their household at baseline made a quit attempt between surveys (OR 0.63, 95% CI 0.45- 0.87). Fewer smokers who had made an attempt between surveys sustained abstinence for at least 1 month if all of their five closest friends smoked (OR 0.60, 95% CI 0.37-0.97). Perceived support to quit in your social network was associated with making and sustaining a quit attempt.
Discussion and Conclusions: Exposure to smoking in the social networks of Aboriginal and Torres Strait Islander smokers is an obstacle to quitting, but there is also considerable support for quitting from within these same social networks. Health staff could consider encouraging smokers to draw on the few non-smokers within their social networks as role models to increase their confidence in quitting.[download PDF]
McDermott, et al. 2019. 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 [access full article]
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 11561 respondents from the following samples in the 2016 International Tobacco Control 4‐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 (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 not mandatory, were not significantly more likely to report having noticed such warnings than those in Australia, Canada and the US where warnings are not mandatory.[download PDF]
Policies that promote the social unacceptability of smoking may also result in smoking-related stigma. The aim of this study is to evaluate how norms against smoking and socioeconomic status (SES) are associated with stigma among smokers. We used data from a panel of adult smokers who participated in the 2008–2012 administrations of the International Tobacco Control Policy Evaluation Survey in Mexico (n = 6670 observations) and Uruguay (n = 3296 observations). Generalized estimating equations were used to account for correlations in the outcomes over time within individuals. We evaluated if injunctive smoking norms (i.e. significant other norms and societal norms), descriptive smoking norms (i.e. number of smoking friends), and two markers of SES (i.e. education and income) were associated with different aspects of smoking-related stigma (i.e. feeling uncomfortable, negative stereotype of smokers, and perceived marginalization). We found that stronger anti-smoking injunctive norms were associated with higher levels of all indicators of perceived stigma in Mexico and Uruguay. Having fewer smoking friends was associated with feeling uncomfortable and perceived marginalization in Mexico. Higher income and education were associated with a stronger negative stereotype of smokers in Mexico. Lower income and education were associated with a stronger negative stereotype of smokers in Uruguay. Study results suggest that factors that drive the social unacceptability of tobacco may stigmatize smokers, although further research is needed to determine whether policy-promoted stigmatization produces undesirable outcomes (e.g. lower cessation rates).[download PDF]