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Objectives: Our objective in this study was to identify the risk factors for cigarette, e-cigarette, and IQOS use among adolescents in Taiwan, with a particular focus on socioeconomic status, smoking status of parents and peers, cigarette promotions, and anti-tobacco campaigns.Methods: Data were obtained from the 2018 version of the annual cross-sectional Taiwan Global Youth Tobacco Survey, which is used to monitor tobacco use among Taiwanese adolescents in junior and senior high schools. The dependent variables in the study were "current cigarette smoking," "current use of e-cigarettes," and "current use of IQOS devices" (i.e., during the 30 days prior to survey completion). Independent variables included gender, school grade, monthly income/allowance, educational level of parents, smoking status of parents, smoking status of close friends, access to free cigarettes, exposure to cigarette advertisements, and attendance at anti-tobacco courses. Logistic regression was used in the identification of factors correlated with the current use of cigarettes, e-cigarettes, or IQOS.Results: We determined that 5.65% of the adolescents in the study were currently using cigarettes, 2.74% were currently using e-cigarettes, and 2.33% were currently using IQOS. Our analysis revealed a number of factors that have a bearing on smoking behavior, including gender, monthly allowance, educational level of parents, smoking status of parents and close friends, access to free cigarettes, and exposure to cigarette advertisements.Conclusions: The tobacco product that was most widely used by adolescents was cigarettes, followed by e-cigarettes and IQOS. The socioeconomic status, smoking status of parents/close friends, and access to cigarettes were all identified as important factors related to the current use of cigarettes, e-cigarettes, and IQOS by adolescents. [ABSTRACT FROM AUTHOR]

Introduction: We investigated the use of electronic cigarettes (e-cigarettes) with traditional cigarettes among adolescents during 2014 to 2016 to identify risk factors for using e-cigarettes only, traditional cigarettes only, or both products.Methods: We used cross-sectional data from the Taiwan Global Youth Tobacco Survey, (conducted over a 3-year period by the Health Promotion Administration, Ministry of Health and Welfare, Taiwan), which is representative of tobacco use among adolescents aged 12-18 years. The outcome variable was smoking behavior. Dependent variables included gender, grade, monthly income/allowance, parents' educational level, parents' smoking status, close friends' smoking status, use of other tobacco products, contact with cigarette/e-cigarette advertisements, and access to free cigarettes/e-cigarettes. Multinomial regression identify factors influencing the smoking behaviors of adolescents, as manifested in the use of traditional cigarettes only, e-cigarettes only, e-cigarettes with traditional cigarettes, and nonsmoking.Results: When weighted to the population, the sample included 1723150 adolescents in 2014, 1691568 adolescents in 2015, and 1627216 adolescents in 2016. The rates averaged over three years were as follows: nonsmoking (91.6%), traditional cigarettes only (5.4%), e-cigarettes only (1.5%), and dual usage (1.6%). Among adolescents in Taiwan, the following were risk factors for dual use: male, older, high monthly allowance, smoking parents, smoking friends, use of other tobacco products, contact with cigarette advertisements, and access to free cigarettes.Conclusions: Our results revealed an increase in the number of adolescents using e-cigarettes with traditional cigarettes. We recommend that the government continue smoking cessation programs while maintaining control over advertisements and promotions for tobacco products.Implications: This is the first study to examine the dual use of e-cigarettes and traditional cigarettes among adolescents in Taiwan. This study identified the risk factors of using traditional cigarettes only, using e-cigarettes only, and the dual use of e-cigarettes and traditional cigarettes, with nonsmokers used as a reference group. This study examined the relationship between exposure to cigarette promotions and the use of various tobacco products including the dual use of e-cigarettes and traditional cigarettes, both of which have been disregarded in previous studies. [ABSTRACT FROM AUTHOR]

Abstract Purpose This study assessed the relationship between electronic cigarette (e-cigarette) use and attempts to quit smoking cigarettes by adolescent smokers in Taiwan. Methods Data were obtained from the cross-sectional Taiwan Global Youth Tobacco Survey conducted annually between 2014 and 2016, which included adolescents aged 12–18 years. The independent variable was e-cigarette use in the previous 30 days. The outcome variable was attempts to quit cigarette smoking during the previous 12 months. We controlled for the following variables: year of survey, gender, grade, monthly income/allowance, numbers of cigarettes per day, smoking status of parents and friends, use of other tobacco products, access to free tobacco products, assistance in quitting smoking, and exposure to anti-tobacco campaigns. Results Among cigarettes smokers, the prevalence of current e-cigarette use (in the previous 30 days) increased from 9.82% (2014) to 27.46% (2016), whereas attempts to quit smoking cigarettes decreased slightly from 71.31% (2014) to 70.59% (2016). Current e-cigarette use (OR = 1.21) was positively associated with attempts to quit cigarette smoking. Smokers who observed anti-tobacco media messages (OR = 1.12), attended antismoking classes (OR = 1.17), were influenced by warnings on cigarette packages (OR = 3.32), or received help to quit (OR = 3.11) were more likely to have attempted to quit cigarettes. Conclusions We identified factors correlated with attempts to quit smoking, and recommend that the government continue monitoring electronic cigarette use, combat smoking in the media, provide antismoking classes, and expand health warnings on cigarette packages. [ABSTRACT FROM AUTHOR]