Sociodemographic differences in nutrition labels effect on Chilean and Mexican youth / Diferencias sociodemográficas en el efecto de las etiquetas nutricionales en las adolescentes de Chile y México / Diferenças sociodemográficas no efeito da rotulagem nutricional em adolescentes chilenos e mexicanos

ABSTRACT Objective. To examine sociodemographic differences in the awareness, understanding, use and effect of nutrition labels among Mexican and Chilean youth. Methods. Online surveys among youth (10-17 years) were obtained in 2019 (n=2631). Participants reported their awareness, understanding, and use of their country-specific nutrition facts tables (NFT) and front-of-pack labels (FOPL) (Chile: warning labels [WLs]; Mexico: guideline daily amounts [GDA]). Additionally, participants reported their perceived healthfulness of a sweetened fruit drink after viewing one of six versions of it with different FOPL (no-label control, Health Star Rating, WLs, GDAs, Traffic Light, or Nutri-Score) during an experimental task. Results. Higher self-reported nutrition knowledge was associated with higher NFT and FOPL awareness, understanding, and use, except for WL use. WLs were the most effective FOPL in decreasing the perceived healthfulness of the sweetened fruit drink compared to a no-label condition and other FOP labels. In Chile, the effect of GDA differed by income adequacy, while in Mexico Nutri-Score differed by age. Conclusions. Results suggest that nutrition label awareness, use, understanding, and impact differ across demographics, favoring higher income and nutrition knowledge. Despite this, WLs are likely to have a positive impact on nutrition-related knowledge and behaviors among Mexican and Chilean youth, independently of their socio-demographic groups.

RESUMEN Objetivo. Examinar las diferencias sociodemográficas por lo que respecta al conocimiento, la comprensión, el uso y el efecto de las etiquetas nutricionales en adolescentes de México y Chile. Métodos. En el 2019 se efectuó una encuesta en línea en adolescentes (10 a 17 años) (n=2631). Los participantes indicaron su conocimiento, comprensión y uso de los cuadros de información nutricional y los etiquetados frontales específicos de los empaques de su país (en el caso de Chile, las etiquetas de advertencia, y en el de México, las guías diarias de alimentación (GDA). Asimismo, se llevó a cabo un experimento en el que los participantes indicaron su percepción de lo saludable que era una bebida de fruta azucarada después de ver una de sus seis versiones con diferentes etiquetas frontales en los envases (control sin etiqueta, calificación de producto saludable mediante estrellas Health Star, etiquetas de advertencia, GDA, colores del semáforo, o sistema Nutri-Score). Resultados. El autorreporte de un mayor conocimiento sobre nutrición por parte de los participantes se asoció a un mayor conocimiento, comprensión y uso de los cuadros de información nutricional y los sistemas de etiquetado frontal, excepto en el caso del uso de las etiquetas de advertencia. Las etiquetas de advertencia fueron el sistema de etiquetado frontal más eficaz para reducir la percepción saludable del producto con respecto a la bebida de fruta azucarada, en comparación con la ausencia de etiqueta y el resto de los etiquetados frontales. En Chile, el efecto de las GDA variaba en función de la adecuación del ingreso, mientras que en México el efecto del Nutri-Score difería según la edad. Conclusiones. Los resultados sugieren que el conocimiento, el uso, la comprensión y el efecto de las etiquetas nutricionales difieren entre los distintos grupos demográficos, de tal manera que son más favorables en las personas con mayores ingresos y conocimientos de nutrición. A pesar de esto, es probable que las etiquetas de advertencia tengan un impacto positivo sobre los conocimientos y los comportamientos relacionados con la nutrición en los adolescentes de México y Chile, con independencia de los grupos sociodemográficos de los que forman parte.

RESUMO Objetivo. Analisar diferenças sociodemográficas em termos de conhecimento, compreensão, uso e efeito da rotulagem nutricional entre adolescentes mexicanos e chilenos. Métodos. Foram realizadas pesquisas on-line entre adolescentes de 10 a 17 anos ao longo de 2019 (n=2631). Os participantes relataram que conheciam, compreendiam e usavam as tabelas de informação nutricional e a rotulagem frontal de embalagens específicas de seus respectivos países (Chile: rotulagem de advertência; México: valores diários de referência). Além disso, os participantes relataram sua percepção sobre a saudabilidade de um suco de fruta adoçado depois de ver uma de seis versões diferentes de rotulagem frontal (controle sem rótulo, Health Star Rating, rótulos de advertência, valores diários de referência, semáforo nutricional ou Nutri-Score) durante uma tarefa experimental. Resultados. Um maior conhecimento autodeclarado sobre nutrição foi associado a maior conhecimento, compreensão e uso de tabelas de informação nutricional e rotulagem frontal, com exceção do uso de rótulos de advertência. Os rótulos de advertência foram o tipo de rotulagem frontal mais efetivo para reduzir a percepção de saudabilidade do suco de fruta adoçado em comparação com o controle sem rótulo e outros tipos de rotulagem frontal. No Chile, o efeito dos valores diários de referência variou de acordo com a renda, enquanto no México o Nutri-Score variou de acordo com a idade. Conclusões. Os resultados sugerem que o conhecimento, a compreensão, o uso e o impacto da rotulagem nutricional variam de acordo com fatores demográficos, favorecendo uma renda mais alta e conhecimento sobre nutrição. Apesar disso, é provável que os rótulos de advertência tenham um impacto positivo sobre o conhecimento e os comportamentos relativos à nutrição entre adolescentes mexicanos e chilenos, independentemente do grupo sociodemográfico a que pertencem.

Screening screeners: calculating classification indices using correlations and cut-points.

Given the recent push for universal screening, it is important to take into account how well a screener identifies children at risk for reading problems as well as how screener and sample information contribute to this classification. Picking the best cut-point for a particular sample and screening goal can be challenging given that test manuals often report classification information for a specific cut-point and sample base rate which may not generalize to other samples. By assuming a bivariate normal distribution, it is possible to calculate all of the classification information for a screener based on the correlation between the screener and outcome, the cut-point on the outcome (i.e., the base rate in the sample), and the cut-point on the screener. We provide an example with empirical data to validate these estimation procedures. This information is the basis for a free online tool that provides classification information for a given correlation between screener and outcome and cut-points on each. Results show that the correlation between screener and outcome needs to be greater than .9 (higher than observed in practice) to obtain good classification. These findings are important for researchers, administrators, and practitioners because current screeners do not meet these requirements. Since a correlation is dependent on the reliability of the measures involved, we need screeners with better reliability and/or multiple measures to increase reliability. Additionally, we demonstrate the impact of base rate on positive predictive power and discuss how gated screening can be useful in samples with low base rates.

Exposure to tobacco smoke measured by urinary nicotine metabolites increases risk of p16/Ki-67 co-expression and high-grade cervical neoplasia in HPV positive women: A two year prospective study.

BACKGROUND: Human papillomavirus (HPV) is considered the strongest epidemiologic risk factor for cervical cancer. However, it is not a sufficient cause given the high prevalence of transient infections. We examined the relationship between exposure to tobacco smoke, measured using urinary nicotine metabolite concentrations, and p16/Ki-67 co-expression in cervical smears and subsequent risk of developing CIN2+/CIN3+ lesions in HPV positive women. METHODS: This prospective longitudinal study enrolled women presenting to colposcopy with cytological abnormalities LSIL/ASCUS at the National Maternity Hospital, Dublin. Women gave a urine sample which was used to perform the Nicotine Metabolite Assay (Siemens). HPV positive (HC2) cervical smears were stained by immunocytochemistry for p16/Ki-67 (CINtec PLUS, Roche). Two year follow-up data, including histological diagnosis, was collected for each woman. Crude and adjusted odds ratios were calculated using logistic regression to investigate associations between tobacco smoke, p16/Ki-67 positivity and CIN2+/CIN3 + . RESULTS: In total, 275 HPV positive women were included. Women with nicotine metabolite concentrations above 500 ng/mL, indicative of smoking, were classified as smokers. Smokers were at an increased risk of testing positive for p16/Ki-67 (OR 1.678; 1.027-2.740) and CIN2+ and CIN3+ (OR 1.816; 1.107-2.977 and OR 2.453; 1.200-5.013) in compared to non-smokers. In p16/Ki-67 positive women, smoking further increased their risk of CIN2+/CIN3+ (OR 2.290; 1.017-5.159 and OR 3.506 (1.534-8.017). CONCLUSION: HPV positive women exposed to tobacco smoke are at a higher risk of testing positive for p16/Ki-67 co-expression. Risk of high-grade disease is almost doubled in women who are exposed to tobacco smoke.

Awareness and interest in IQOS heated tobacco products among youth in Canada, England and the USA.

INTRODUCTION: Heated tobacco products (HTPs), such as IQOS, have been introduced in a growing number of international markets. However, little is known about perceptions of HTP products among youth. METHODS: Data are from wave 1 of the International Tobacco Control Youth Tobacco and E-cigarette Survey (2017), a web-based cohort survey of people aged 16-19 years from Canada, England and the USA. Respondents (n=12 064) were shown an image of IQOS and asked about their awareness, interest in trying and susceptibility to trying the product. Youth awareness, interest in trying and susceptibility to trying IQOS were analysed using descriptive statistics, and logistic regression models were used to examine correlates of these outcomes. RESULTS: Overall, 7.0% of youth reported awareness of IQOS (England=5.6%, Canada=6.4% and USA=9.1%) and 38.6% expressed interest in trying the product (England=41.8%, Canada=33.0% and USA=40.9%). Within each country, all key outcomes varied by smoking status: greater proportions of youth who were currently smoking or had a history of smoking reported being aware of, interested in trying and susceptible to trying IQOS. Interest and susceptibility to trying IQOS were associated with male sex, current tobacco use and current e-cigarette use. Across all countries, susceptibility to trying IQOS (25.1%) was higher than for tobacco cigarettes (19.3%), but lower than for e-cigarettes (29.1%). CONCLUSIONS: Awareness of HTPs, such as IQOS, is emerging among youth in Canada, England and the USA. Interest in trying these products is very high among smokers, but also present among non-smokers.

Prevalence of vaping and smoking among adolescents in Canada, England, and the United States: repeat national cross sectional surveys.

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.

Identification of flavouring chemicals and potential toxicants in e-cigarette products in Ontario, Canada.

OBJECTIVES: The current study examined constituents of e-cigarette products on the Canadian market, with a focus on the province of Ontario. METHODS: E-cigarettes were systematically purchased at 80 retail outlets across 4 cities in Ontario, Canada, in January-February 2015. Product constituents were identified using gas chromatography and mass spectrometry. Additionally, tobacco-specific nitrosamines (TSNAs) were quantified in tested products using liquid chromatography with tandem mass spectrometry. RESULTS: A total of 166 e-cigarette products were purchased, including disposable products (33%), refillable products (14%), and e-liquids (53%). Overall, e-cigarette products had an average of 6.2 (SD = 3.6) flavouring chemicals. E-cigarettes with sweet flavours (e.g., desserts, alcoholic drinks) had a significantly greater number of flavouring chemicals when compared with tobacco- and menthol-flavoured products (p < 0.05). Approximately one fifth (21%) of products contained flavouring chemicals with potential risk of inhalation toxicity (benzyl alcohol, benzaldehyde, vanillin). An additional 8 toxicants (e.g., acrolein, diacetyl) were detected in a total of 14 e-cigarette products. Measurable levels of TSNAs were detected in 70% of tested products. CONCLUSION: E-cigarettes purchased in Ontario, Canada, contained several constituents that may present excess risk, including some flavouring chemicals and carcinogenic nitrosamines. Further research is needed to determine whether the levels of these constituents have implications for the magnitude of risk to users. The findings reveal several policy gaps that may be addressed by developing regulatory product standards and labelling practices for e-cigarettes.

Cigarette flavors, package shape, and cigarette brand perceptions: an experiment among young Brazilian women.

OBJECTIVE: In 2012, a new Brazilian regulation prohibited the use of flavor additives in tobacco products. To better understand the potential impact of this regulation, this study examines how flavor descriptors on cigarette packaging influence brand perceptions among young Brazilian women. METHODS: An online cross-sectional experiment was conducted with Brazilian women aged 16-26 (N = 640: 182 smokers and 458 nonsmokers) who rated 10 cigarette packages from one of three conditions: 1) branded packs; 2) packs with the same size, shape, and verbal descriptions as in condition 1, but without brand imagery (i.e., "plain pack"); and 3) packs from condition 2 but without brand descriptors (i.e., "plain pack, no descriptors"). Mixed-effects linear regression models were utilized to determine what associations that pack features (i.e., experimental condition; flavor descriptor vs. not; slim pack vs. not) had with participant ratings of nine characteristics, including appeal, taste, smoothness, and attributes of people who smoke the brand. RESULTS: Flavored branded packs were rated as more appealing, better tasting, and smoother than flavored plain packs with descriptors. Compared to flavored plain packs with descriptors, the same packs without descriptors were rated less positively on eight of the nine characteristics. Compared to nonsusceptible nonsmokers, susceptible nonsmokers rated flavored packs more positively on eight of the nine characteristics. Slim packs were rated more positively than regular packs on eight of the nine characteristics. CONCLUSIONS: Slim packs and brands highlighting tobacco flavors appear to increase positive perceptions of tobacco products. Banning tobacco flavorings and slim packs may reduce the appeal of smoking for young Brazilian women, as well as for other vulnerable populations.

Cigarette flavors, package shape, and cigarette brand perceptions: an experiment among young Brazilian women / Los sabores de cigarrillos, la forma del paquete y las percepciones de las marcas de cigarrillos: un experimento entre las jóvenes brasileñas / Sabores do cigarro, forma do pacote e percepções da marca do cigarro: um experimento entre mulheres jovens brasileiras

ABSTRACT Objective In 2012, a new Brazilian regulation prohibited the use of flavor additives in tobacco products. To better understand the potential impact of this regulation, this study examines how flavor descriptors on cigarette packaging influence brand perceptions among young Brazilian women. Methods An online cross-sectional experiment was conducted with Brazilian women aged 16-26 (N = 640: 182 smokers and 458 nonsmokers) who rated 10 cigarette packages from one of three conditions: 1) branded packs; 2) packs with the same size, shape, and verbal descriptions as in condition 1, but without brand imagery (i.e., "plain pack"); and 3) packs from condition 2 but without brand descriptors (i.e., "plain pack, no descriptors"). Mixed-effects linear regression models were utilized to determine what associations that pack features (i.e., experimental condition; flavor descriptor vs. not; slim pack vs. not) had with participant ratings of nine characteristics, including appeal, taste, smoothness, and attributes of people who smoke the brand. Results Flavored branded packs were rated as more appealing, better tasting, and smoother than flavored plain packs with descriptors. Compared to flavored plain packs with descriptors, the same packs without descriptors were rated less positively on eight of the nine characteristics. Compared to nonsusceptible nonsmokers, susceptible nonsmokers rated flavored packs more positively on eight of the nine characteristics. Slim packs were rated more positively than regular packs on eight of the nine characteristics. Conclusions Slim packs and brands highlighting tobacco flavors appear to increase positive perceptions of tobacco products. Banning tobacco flavorings and slim packs may reduce the appeal of smoking for young Brazilian women, as well as for other vulnerable populations.

RESUMEN Objetivo En 2012, una nueva regulación brasileña prohibió el uso de aditivos de sabor en los productos de tabaco. Para comprender mejor el impacto potencial de esta regulación, este estudio examina cómo los descriptores de sabor en los envases de cigarrillos influyen en las percepciones de marca entre las jóvenes brasileñas. Métodos Se realizó un estudio transversal, en línea con mujeres brasileñas de entre 16 y 26 años (N = 640: 182 fumadores y 458 no fumadores) que calificaron 10 paquetes de cigarrillos de acuerdo a una de las siguientes condiciones: 1) paquetes de marca; 2) paquetes con el mismo tamaño, forma y descripciones verbales que en la condición 1, pero sin imágenes de marca (es decir, "paquete simple"); y 3) paquetes de la condición 2 pero sin descriptores de marca (es decir, "paquete simple, sin descriptores"). Se utilizaron modelos de regresión lineal de efectos mixtos para determinar qué asociación existía entre las diferentes condiciones (es decir, condición experimental, descriptor de sabor vs. no, paquete delgado vs. no) con las calificaciones de los participantes de nueve características, incluyendo atractivo, sabor, suavidad y atributos de personas que fuman la marca. Resultados Los paquetes de marca con sabor se calificaron como más atractivos, de mejor sabor y más suaves que los paquetes simples con sabores y descriptores. En comparación con los paquetes simples con sabores con descriptores, los mismos paquetes sin descriptores fueron calificados de manera menos positiva en ocho de las nueve características. En comparación con los no fumadores no susceptibles, los no fumadores susceptibles calificaron los paquetes con sabor de forma más positiva en ocho de las nueve características. Los paquetes delgados fueron clasificados más positivamente que los paquetes regulares en ocho de las nueve características. Conclusiones Los paquetes delgados y las marcas que destacan los sabores del tabaco parecen aumentar las percepciones positivas de los productos de tabaco. Prohibir los sabores del tabaco y los paquetes delgados puede reducir el atractivo del tabaco para las jóvenes brasileñas, así como para otras poblaciones vulnerables.

RESUMO Objetivo Em 2012, uma nova regulamentação brasileira proibiu o uso de aditivos aromáticos nos produtos tabagísticos. Para entender melhor o impacto potencial desta regulação, este estudo examinou como a propaganda de aroma em embalagens de cigarros influencia a percepção das brasileiras jovens sobre a marca do produto. Método Estudo transversal em que 640 brasileiras (168 fumantes e 458 não fumantes) avaliaram online, uma entre três das seguintes características de 10 pacotes de cigarros: 1) embalagem com a imagem da marca; 2) pacotes com o mesmo tamanho, formato e descrição das características do produto 1, mas sem marca (havia apenas a descrição do produto) e, 3) embalagens nas condições 2, mas sem a descrição do produto (embalagem em branco). O modelo de regressão linear misto foi utilizado para determinar associações das características da embalagem do cigarro (Ex: situação experimental, descrição de aroma versus não, pacotes finos versus não) com as avaliações das participantes para nove características do produto, incluindo a apelação, aroma, suavidade e atributos de quem fuma certa marca. Resultados Pacotes aromatizados de marca foram classificados como mais atraentes, com melhor sabor e suavidade em relação aos que tinham simples descrição do produto. Os pacotes descritos como aromatizados comparados ao mesmo produto sem descrição obtiveram menores escores para oito dentre nove características avaliadas. Em comparação as não fumantes sem suscetibilidade ao tabagismo, as que eram suscetíveis classificaram produtos aromatizados mais positivamente em oito de suas nove características. As embalagens finas receberam julgamento mais positivo do que as com espessura regular para oito dentre nove itens analisados. Conclusões Pacotes finos e marcas que destacam os aromas do tabaco parecem aumentar a percepção positiva deste produto. Proibir a aromatização do tabaco e a oferta de pacotes finos de cigarros reduzem o apelo de fumar entre brasileiras jovens, bem como para outros grupos vulneráveis.

Perceptions of branded and plain cigarette packaging among Mexican youth.

Plain cigarette packaging, which seeks to remove all brand imagery and standardize the shape and size of cigarette packs, represents a novel policy measure to reduce the appeal of cigarettes. Plain packaging has been studied primarily in high-income countries like Australia and the UK. It is unknown whether the effects of plain packaging may differ in low-and-middle income countries with a shorter history of tobacco regulation, such as Mexico. An experimental study was conducted in Mexico City to examine perceptions of branded and plain cigarette packaging among smoking and non-smoking Mexican adolescents (n = 359). Respondents were randomly assigned to a branded or plain pack condition and rated 12 cigarette packages for appeal, taste, harm to health and smoker-image traits. As a behavioral measure of appeal, respondents were offered (although not given) four cigarette packs (either branded or plain) and asked to select one to keep. The findings indicated that branded packs were perceived to be more appealing (ß = 3.40, p < 0.001) and to contain better tasting cigarettes (ß = 3.53, p < 0.001), but were not perceived as less harmful than plain packs. Participants rated people who smoke the branded packs as having relatively more positive smoker-image traits overall (ß = 2.10, p < 0.001), with particularly strong differences found among non-smokers for the traits 'glamorous', 'stylish', 'popular' and 'sophisticated' (p < 0.001). No statistically significant difference was found for the proportion of youth that accepted when offered branded compared with plain packs. These results suggest that plain packaging may reduce brand appeal among Mexican youth, consistent with findings in high-income countries.

Retail availability and marketing of electronic cigarettes in Canada.

OBJECTIVES: Canada is among an increasing number of countries with restrictions on the sale of electronic cigarettes (e-cigarettes). In Canada, e-cigarettes containing nicotine have not been approved for sale; however, e-cigarettes that do not contain nicotine and do not make health claims can be sold. To date, there is little empirical evidence assessing the retail availability and marketing of e-cigarettes in countries such as Canada. METHODS: Audits were conducted at 59 brick-and-mortar retail outlets (grocery stores, convenience stores, tobacconist shops and vape shops) in four cities (Vancouver, Toronto, Montreal and Halifax) in August-October 2014. In addition, a total of 21 e-cigarette manufacturer/retailer websites were audited, and inquiries were made as to whether the companies sold nicotine-containing products. RESULTS: Overall, 76% of the retail outlets sold e-cigarette products. Of convenience stores, grocery stores and tobacconist shops with e-cigarettes for sale, the vast majority (94%) sold nicotine-free products only; in contrast, all the vape shops sold at least one nicotine-containing e-cigarette product. Front counter displays were the most common form of in-store promotions and were present in virtually all convenience stores, tobacconist shops and vape shops. Nicotine-containing e-cigarettes were available for purchase at approximately half (52%) of the online e-cigarette retailers surveyed. CONCLUSION: E-cigarettes with and without nicotine are widely available and marketed at a variety of retail outlets in Canada. "Illegal" sales of nicotinecontaining e-cigarettes were predominantly found at vape shops and online outlets, suggesting limited compliance with existing regulations.

Stop-Smoking Medication Use, Subsidization Policies, and Cessation in Canada.

INTRODUCTION: In 2000, Quebec began reimbursing stop-smoking medications (SSMs) through their provincial public drug insurance plan. Several other Canadian provinces have since begun offering SSM subsidies. Clinical trials indicate that SSMs can increase quit success; however, little evidence exists on patterns of use in "real-world" settings and impact on population quit rates. This study examines Canadian trends in SSM use and quit success over time, comparing provinces with differing subsidization policies. METHODS: Secondary analyses were conducted in 2014 using nationally representative Canadian Tobacco Use Monitoring Survey data, 2004-2012, for current and former smokers who made a quit attempt in the past 2 years (N=26,094). Regression models tested for differences in SSM use and quit success in provinces with differing SSM coverage (i.e., none, partial, or comprehensive). RESULTS: Smokers were more likely to use nicotine replacement therapy (NRT) in jurisdictions with comprehensive SSM coverage versus jurisdictions with partial (OR=1.39, 95% CI=1.22, 1.59) or no coverage (OR=1.43, 95% CI=1.21, 1.68). Prescription medication use was more likely in provinces with partial (versus no) coverage (OR=1.27, 95% CI=1.01, 1.59). Overall, smokers who attempted to quit were more likely to remain abstinent in jurisdictions with comprehensive versus partial (OR=1.20, 95% CI=1.12, 1.28) or no coverage (OR=1.23, 95% CI=1.00, 1.50). An interaction between coverage and cigarettes per day was observed, suggesting potentially greater impact of comprehensive coverage among heavier smokers. CONCLUSIONS: Comprehensive subsidization policies are associated with modest increases in NRT use and quit success, but do not appear to impact prescription SSM use.

Electronic cigarettes in Canada: prevalence of use and perceptions among youth and young adults.

OBJECTIVES: The goal of this study was to examine the prevalence and perceptions of electronic cigarette use among Canadian youth and young adults. METHODS: A sample of 1,188 youth and young adults age 16-30 years were recruited from an online panel of Canadians in 2012. After viewing an image of an e-cigarette, respondents answered questions regarding their use and perceptions of e-cigarettes. RESULTS: Close to half of respondents (43.4%) had seen e-cigarettes advertised or for sale. A total of 16.1% reported trying an e-cigarette (5.2% nonsmokers, 18.9% former smokers, and 34.5% current smokers), and 5.7% reported use in the past 30 days (0.8% non-smokers, 1.4% former smokers, and 15.0% current smokers). Compared to non-smokers, former smokers and current smokers were more likely to have tried e-cigarettes (OR=4.25 and OR=9.84, respectively), and current smokers were more likely to have tried e-cigarettes than former smokers (OR=2.32). Current smokers were also more likely to be current users of e-cigarettes than both former smokers (OR=15.15) and non-smokers (OR=4.43). Smokers were interested in trying e-cigarettes to help them quit smoking (80.4%), as a long-term replacement for cigarettes (77.8%), or to use in places where they cannot smoke (80.9%). CONCLUSIONS: Awareness of e-cigarettes among surveyed youth and young adults is quite high. Almost one fifth (16.1%) of participants reported trying e-cigarettes, with evidence of use among non-smokers.

The effect of cigarette branding and plain packaging on female youth in the United Kingdom.

PURPOSE: Cigarette packaging is the most prominent form of tobacco marketing remaining in countries such as the United Kingdom. The current study examined perceptions of cigarette packaging among female youth and the potential impact of "plain" cigarette packaging regulations. METHODS: A national sample of 947 16- to 19-year-old female subjects in the United Kingdom completed an online survey. Participants were randomized to view 10 cigarette packs designed according to one of four experimental conditions: fully branded female packs, the same packs without descriptor words, the same packs without brand imagery or descriptors ("plain" packs), and branded non-female brands. Participants rated packs on measures of appeal and health risk, positive smoker image, and completed a behavioral pack selection task. RESULTS: Plain packs were rated as the least appealing and worse tasting compared with all other conditions. Plain packs were also associated with fewer false beliefs about health risks compared with branded packs. Removing brand descriptors from packs significantly reduced measures of appeal and taste, particularly for brands with flavor descriptors, such as cherry and vanilla. Plain packs were significantly less likely to be associated with positive images, such as glamour, sophistication, and slimness. Most importantly, respondents were significantly less likely to accept a pack of cigarettes when offered only plain versus branded packs (p = .026). CONCLUSIONS: Marketing in the form of pack branding remains a potent tool for increasing the appeal of tobacco products to young women. The findings provide empirical support for plain cigarette packaging regulations in Australia to be implemented in 2012.

The potential impact of plain packaging of cigarette products among Brazilian young women: an experimental study.

BACKGROUND: Tobacco use is responsible for 5.4 million deaths every year worldwide and is a leading cause of preventable death. The burden of these deaths is rapidly shifting to low and middle-income countries, such as Brazil. Brazil has prohibited most forms of tobacco advertising; however, the cigarette pack remains a primary source of marketing. The current study examined how tobacco packaging influences brand appeal and perceptions of health risk among young women in Brazil. METHODS: A between-subjects experiment was conducted in which 640 Brazilian women aged 16-26 participated in an online survey. Participants were randomized to view 10 cigarette packages according to one of three experimental conditions: standard branded packages, the same packs without brand imagery ("plain packaging"), or the same packs without brand imagery or descriptors (e.g., flavors). Participants rated packages on perceived appeal, taste, health risk, smoothness, and smoker attributes. Finally, participants were shown a range of branded and plain packs from which they could select one as a free gift, which constituted a behavioral measure of appeal. RESULTS: Branded packs were rated as significantly more appealing, better tasting, and smoother on the throat than plain packs. Branded packs were also associated with a greater number of positive smoker attributes including style and sophistication, and were perceived as more likely to be smoked by females than the plain packs. Removing descriptors from the plain packs further decreased the ratings of appeal, taste and smoothness, and also reduced associations with positive attributes. In the pack offer, participants were three times more likely to select branded packs than plain packs. CONCLUSIONS: Plain packaging and removal of descriptors may reduce the appeal of smoking for youth and young adults, and consequently reduce smoking susceptibility. Overall, the findings provide support for plain packaging regulations, such as those in Australia.

REO-10: a phase I study of intravenous reovirus and docetaxel in patients with advanced cancer.

PURPOSE: REOLYSIN (Oncolytics Biotech) consists of a wild-type oncolytic reovirus, which has selective cytotoxicity for tumor cells while sparing normal cells. In a phase I study as a single agent, repeated infusions of reovirus were safe with evidence of antitumor activity. Preclinical studies indicate potential for synergy between reovirus and chemotherapeutic agents. A multicenter, phase I dose escalation study was designed to assess the safety of combining reovirus with docetaxel chemotherapy in patients with advanced cancer. EXPERIMENTAL DESIGN: Patients received 75 mg/m(2) docetaxel (day 1) and escalating doses of reovirus up to 3 × 10(10) TCID(50) (days 1-5) every 3 weeks. RESULTS: Twenty-five patients were enrolled, and 24 patients were exposed to treatment, with 23 completing at least one cycle and 16 suitable for response assessment. Dose-limiting toxicity of grade 4 neutropenia was seen in one patient, but the maximum tolerated dose was not reached. Antitumor activity was seen with one complete response and three partial responses. A disease control rate (combined complete response, partial response, and stable disease) of 88% was observed. Immunohistochemical analysis of reovirus protein expression was observed in posttreatment tumor biopsies from three patients. CONCLUSION: The combination of reovirus and docetaxel is safe, with evidence of objective disease response, and warrants further evaluation in a phase II study at a recommended schedule of docetaxel (75 mg/m(2), three times weekly) and reovirus (3 × 10(10) TCID(50), days 1-5, every 3 weeks).

Inhibiting transcription factor/DNA complexes using fluorescent microgonotropens (FMGTs).

Fluorescent microgonotropens (FMGTs) are A/T selective, minor groove-binding bisbenzimidazole ligands. Basic side chains extending from these agents electrostatically contact the major groove side of the phosphodiester backbone of DNA, endowing them with high binding affinity. Here, we evaluate the potential of these agents as inhibitors of transcription factor (TF) binding to DNA and explore whether their ability to contact both grooves enhances their inhibitory activity. A series of FMGTs (L2-L5), with polyamine tails of varying lengths and degrees of branching, were compared to an analog lacking these basic side chains (L1), and the classical bisbenzimidazole Hoechst 33342 for effects on TF complex formation on the c-fos serum response element (SRE). Although L1 could not inhibit TF/SRE interactions, L2-L5 did so at submicromolar concentrations. Moreover, the FMGTs were up to 50 times more potent than Hoechst 33342 in inhibiting TF complex formation in electrophoretic mobility shift assays. The FMGTs also inhibited c-fos promoter-driven cell-free transcription and topoisomerase II activity in nuclei. These studies establish the potential of FMGTs as TF/DNA complex inhibitors in cell-free systems, provide insight into the relationship between their structure and biological activities, and demonstrate the benefits of functionalizing minor groove binding-agents with major groove-contacting groups.