Analysis of multidimensional factors in attempts to quit using tobacco by Korean adolescents
Environmental Health and Preventive Medicine volume 25, Article number: 71 (2020)
This study aims to understand the extent of adolescents’ attempts to quit using tobacco and the factors influencing such attempts in Korea, using a descriptive, cross-sectional design and secondary data analysis with the 2019 Youth Health Behavior Survey.
The participants were 4028 adolescent tobacco users who had used tobacco for 1 day or more in the past 30 days. The data analysis was performed using IBM SPSS/WIN 26.0 program, and multivariable logistic regression analysis was conducted using the complex sampling method module.
A total of 68.2% of the participants attempted to quit using tobacco. We analyzed the factors for adolescents’ attempts to quit using tobacco by dividing them into psychological, physical, behavioral, and environmental dimensions. The factors influencing adolescents’ attempts to quit using tobacco, identified through multivariable logistic regression analysis, are as follows: participation in sports activities (OR = 1.20, 95% CI 1.01–1.41), vigorous physical activity (OR = 1.24, 95% CI 1.06–1.46), and type of tobacco product used (OR = 1.65, 95% CI 1.24–2.21) in the behavioral dimension; pictorial cigarette pack warnings (perceived smoking as unhealthy) (OR = 1.91, 95% CI 1.56–2.36), and the presence of secondhand smoking at home (OR = 1.18, 95% CI 1.01–1.38) in the environmental dimension.
Schools and public healthcare providers must consider multidimensional factors when providing support for successful tobacco cessation in adolescents and focus particularly on elements relating to physical activity and environmental factors.
As it celebrates the 2020 World No Tobacco Day, the World Health Organization (WHO) is engaging in a campaign to “protect children and young people from tobacco and related industries” . Smoking is a risky behavior that blocks the oxygen supply to multiple organs, including the lungs, leading to functional damage . About 90% of smokers begin smoking before the age of 18 [2, 3]. According to the Korea Ministry of Health and Welfare, adolescents in Korea smoke to relieve stress, escape boring situations, and find new stimuli . Once this becomes a habit, they feel the craving for tobacco and continue to smoke . However, as smoking in one’s adolescence continues into adulthood, it may contribute to the development of drug abuse, depression, and other problematic behaviors . Some studies even report that the rate of premature death in smokers is more than six times higher than the average .
According to the 15th Youth Health Behavior Survey, conducted in 2019, the rate of tobacco use in Korean adolescents was 9.3% in males and 3.8% in females . Despite various preventative measures, including warnings on the risks of using tobacco, as well as tobacco-cessation education, only 70.1% of the male students who used tobacco attempted to quit in the previous 12 months. Those rates were higher than the 66.5% of female students who attempted to quit smoking .
In Korea, the number of adolescents who smoke cigarettes is ten times the number of those who only use e-cigarettes or heated tobacco products (HTPs) , with approximately 75% of adolescents using both e-cigarettes and cigarettes . Adolescents who use e-cigarettes have been shown to smoke more frequently than adolescents who smoke regular cigarettes . In some countries, e-cigarettes are reported to be used for smoking cessation [10, 11]; however, according to the WHO, the cessation effect of e-cigarettes has not yet been systematically evaluated . Korean adolescents who use e-cigarettes or HTPs have stated that they are used because they are perceived as less harmful to one’s health than cigarettes, do not smell, and can be smoked freely at school or home .
According to a study by Myers et al. , 60.9% of the high school students who smoke daily have attempted to quit. However, relapse is common in the process of quitting smoking, which highlights the importance of the factors that influence this process. Furthermore, smoking is a multidimensional behavior relating to genetic, psychological, environmental, and sociocultural characteristics . Therefore, it is necessary to identify the factors influencing smoking and attempts to quit smoking from a multidimensional perspective to reduce rates of adolescent smoking.
Previous studies that have examined smoking and quitting smoking in adolescents have generally focused on factors such as behavior [16,17,18,19,20,21], perception and attitude [3, 22], psychology  and environment [18, 23], and other specific subjects [18, 24,25,26], indicating a general lack of studies from the multidimensional perspective. In addition, no studies have distinguished physical characteristics, including physical disorders and behavioral characteristics.
Thus, we aimed to identify the factors that influence attempts to quit using tobacco from a multidimensional perspective of psychological, physical, behavioral, and environmental dimensions to reduce rates of using tobacco in Korean adolescents.
This study is descriptive, cross-sectional research involving a secondary analysis of the data from the 15th Youth Health Behavior Survey conducted in 2019 .
Research participants and data
The Youth Health Behavior Survey is an annual, official statistics survey that is conducted online by the Ministry of Education, the Ministry of Health and Welfare, and the Korea Centers for Disease Control and Prevention to understand the status of, and trends in, health behavior among Korean adolescents . The 15th Youth Health Behavior Survey utilized middle and high school data nationwide, as of April 2019. Samples were extracted using the complex sample design method. The sample extraction process resulted in 60,100 students, and a total of 57,303 students participated in the final survey . The participants of this study were classified as adolescent tobacco users if any of them had used one or more of the following for one or more days in the past 30 days: (1) cigarettes, (2) e-cigarettes with nicotine, or (3) any HTPs. In total, 4028 adolescent tobacco users were selected for analysis from the original sample of 57,303 participants.
Definition of research variables
The general characteristics of the subjects consist of gender, school type, economic status, and academic performance.
The psychological characteristics of the participants included perceived stress, depressive feelings, suicidal ideation, sleep satisfaction, subjective health status, and body shape perception. Stress perception was classified as “high” and “low.” “Yes” or “No” responses were used to gauge depressive feelings and suicidal ideation. Sleep satisfaction was classified based on responses to the question, “Do you feel that the amount of sleep that you had in the past seven days to be sufficient to recover from fatigue?” Subjective health status classified “Healthy,” “Fair,” and “Unhealthy,” and body shape perception classified the responses to the question, “What do you think about your body shape?”
Participants’ physical characteristics consisted of having a diagnosis of asthma, allergic rhinitis, or atopic dermatitis, as well as obesity and experience of halitosis. “Yes” or “No” responses were used to respond to questions regarding any past or current (1) diagnosis of asthma, (2) allergic rhinitis, and (3) atopic dermatitis. For obesity, body mass index (BMI) was calculated as weight (kg)/height (m2) and in accordance with the guidelines from the Korean Society for the Study of Obesity . The experience of halitosis was based on “Yes” or “No” responses to the question, “Have you experienced any of the symptoms in the past 12 months?”
Participants’ behavioral characteristics included participation in sports activities, vigorous physical activity, weight loss attempts, current drinking, and type of tobacco product used. The participation in sports activities was based on the question, “How many sports teams have you regularly participated in school this semester?” Vigorous physical activity was based on the question, “How many days in the past seven days have you engaged in vigorous physical activity for more than 20 minutes, resulting in being significantly short of breath or sweating?” Weight loss attempts were assessed by the question, “Have you attempted to control your weight in the past 30 days?” Current drinking was measured using the question, “How many days in the past 30 days have you drank one or more drink?” Type of tobacco product used was classified into “only cigarettes” and “e-cigarettes with nicotine or HTPs (without cigarettes),” and those who used both cigarettes and e-cigarettes with nicotine or HTPs were classified as “dual use.”
Environmental characteristics consist of pictorial cigarette pack warning-recognition of health hazards and secondhand smoking at home. Pictorial cigarette pack warning-recognition of health hazards classified the responses to the question, “Do you think smoking is bad for you after looking at the warning images on the cigarette packs?” Secondhand smoking at home used the question, “How many days have you breathed smoke from cigarettes someone else smoked inside your home in the past seven days?”
Attempts to quit using tobacco
Attempts to quit using tobacco were recorded as “Yes” or “No” responses to the question, “Have you tried to quit using tobacco (i.e., cigarette, e-cigarette with nicotine, HTPs) used in the past 12 months?”
Data analysis method
The data analysis was conducted using the IBM SPSS/WIN 26.0 program. As the sample from the Youth Health Behavior Survey was extracted under the complex sampling design, calculations were done in consideration of stratification variables, cluster variables, weighting, and finite population correction. The data were analyzed using the complex sampling method module. Descriptive statistics and cross-tabulation analysis were utilized to confirm the distribution of variables in the participants’ general characteristics; psychological, physical, behavioral, and environmental domains; and attempts to quit using tobacco, and calculated unweighted frequency and weighted percentage. Through univariate logistic regression analysis, the relationship between independent variables and attempts to quit using tobacco was determined, and variables were identified to include in multivariable analyses. Multivariable logistic regression analysis was performed to identify factors that influence attempts to quit using tobacco, and 95% confidence interval (CI) and the adjusted odds ratio (AOR) were calculated.
In terms of general participant characteristics, 73.0% of the participants were male, and 76.4% were high school students. Economic status was described by 44.5% as “middle,” and 50.5% of the participants had “low” academic performance. In terms of the psychological characteristics, 48.5% of the participants responded “High” for perceived stress. In the past 12 months, 42.7% had experienced depressive feelings, and 23.6% considered suicide. Sleep time was reported by 55.7% of the participants as being insufficient to recover from fatigue, and 67.8% responded that they were in good health. Body shape perception was described by 37.3% participants as being “Fat.” In terms of physical characteristics, 10.8% of the subjects were diagnosed with asthma, 35.0% were diagnosed with allergic rhinitis, and 22.3% were diagnosed with atopic dermatitis. With regard to weight, 19.8% of the participants were obese, and 22.9% had experience with halitosis. In terms of behavioral characteristics, 49.8% of the participants reported that they regularly participated in sports teams, and 41.3% engaged in vigorous physical activity for 3 days or more per week. In the past 30 days, 33.2% had attempted to lose weight, and 67.7% of the participants were currently consuming alcohol. In terms of the type of tobacco product used, 46.3% of the participants used “only cigarettes,” 45.2% reported “dual use,” and 8.5% reported using “e-cigarette with nicotine or HTPs” (without cigarettes). In our study, 0.7% (n = 25) of participants reported only using e-cigarette with nicotine, and 0.4% (n = 15) were HTPs-only users. Most of the e-cigarette users also reported using HTPs. In terms of environmental characteristics, 85.0% of the participants perceived smoking to be unhealthy by seeing the pictorial warnings on the cigarette packs, and 43.6% experienced secondhand smoking at home in the past 7 days (Table 1).
Differences in rates of attempts to quit using tobacco by related factors in adolescent tobacco users
The rate of attempts to quit using tobacco across all participants was 68.2%. The results of the cross-tabulation analysis and the univariate logistic regression are shown in Table 2. A univariate logistic regression analysis was used to determine the association of each factor with the attempts to quit using tobacco. As a result of the analysis, “high” academic performance (OR = 0.75; 95% CI 0.0.64–0.89), low stress perception (OR = 1.19; 95% CI 1.03–1.38), asthma (OR = 0.77; 95% CI 0.63–0.94), obesity (OR = 1.27; 95% CI 1.07–1.50), participating in sports activities (OR = 1.24; 95% CI 1.08–1.42), practicing vigorous physical activity (OR = 1.25; 95% CI 1.10–1.43), only cigarette use (OR = 1.62; 95% CI 1.29–2.04), dual use of cigarettes and e-cigarettes or HTPs (OR = 1.59; 95% CI 1.26–2.00), recognizing smoking is unhealthy from the warnings on the cigarette packs (OR = 1.93; 95% CI 1.60–2.34), and no experience of secondhand smoke at home (OR = 1.25; 95% CI 1.10–1.44) were significantly associated with attempts to quit using tobacco.
Factors influencing attempts to quit using tobacco in adolescent tobacco users
Multivariable logistic regression analysis was performed by entering significant association variables in univariate analysis (Table 3). As a result of the analysis, participating in sports activities (AOR = 1.20; 95% CI 1.01–1.41), practicing vigorous physical activity (AOR = 1.24; 95% CI 1.06–1.46), only cigarette use (AOR = 1.65; 95% CI 1.24–2.21), the dual use of cigarettes and e-cigarettes or HTPs (AOR = 1.62; 95% CI 1.22–2.15), recognizing smoking is unhealthy from the pictorial warnings on the cigarette packs (AOR = 1.91; 95% CI 1.56–2.36), and no experience of secondhand smoke at home (AOR = 1.18; 95% CI 1.01–1.38) were significantly associated with attempts to quit using tobacco.
Adolescent tobacco users are at a significant risk of becoming subsequent tobacco users . In addition, tobacco may be a gateway to substance abuse, depression, and other problematic behaviors [5, 29]. Therefore, the control of tobacco is especially important for adolescents.
This study has confirmed factors across multiple dimensions relating to attempts to quit using tobacco in Korean adolescents. The study found that the rate of attempts to quit in adolescent tobacco users was 68.2%. These results represent a 3.3% drop from 71.3% in 2018 . A recent study of 3.3 million American adolescents also indicated that only 57.5% of adolescent tobacco users had attempted to quit using tobacco .
In the past 10 years, the rate of adolescent tobacco use in Korea dropped significantly, from 12.1% in 2010 to 6.7% in 2019 . This decline corresponds to efforts in preventing adolescent tobacco use, which have taken place since 2010. Several tobacco-cessation policies and stronger regulations on tobacco use were put in place, such as strengthening tobacco-cessation education in schools, expanding no-tobacco-use zones, raising tobacco prices, and placing warning images on cigarette packs . While the rate of adolescent tobacco use has decreased, the rate of quit attempts in adolescent tobacco users appear to be similar to, or lower than, the rates seen in existing studies . This may be related to levels of nicotine dependence throughout the period of tobacco use .
This study has classified the factors influencing tobacco-use quit attempts in adolescent tobacco users into physical, psychological, behavioral, and environmental dimensions for analysis and found that behavioral and environmental dimensions effected significant results. Specifically, the influencing factors of behavioral dimensions were sports team participation, vigorous physical activity, and the type of tobacco product used; the factors in the environmental domain were warning images on cigarette packs and experience of secondhand smoking at home.
Adolescent tobacco users who participated in sports teams and engaged in vigorous physical exercise were more likely to attempt to quit using tobacco compared to their peers who did not. This is in line with the results of existing studies that indicated physical activity is related to tobacco-use quit attempts . Existing studies have found that levels of stress and depression were higher in adolescent tobacco users compared to non-tobacco users. This was generally caused by the burden of academics and the lack of coping abilities required to deal with stress . Particularly, Korean adolescents are choosing tobacco use as a method to relieve stress , as well as to associate with their peer groups . Therefore, appropriate interventions are needed at the school and at the regional community level to relieve the stress faced by adolescents. Physical activity in adolescents has a positive influence on their mental health . Therefore, in addition to strengthening tobacco-cessation education, it is necessary to provide adolescents the opportunities to form groups and participate in various sports activities or other areas of interest.
In this study, the adolescents who used e-cigarettes or HTPs (without cigarettes) had lower rates of tobacco-use quit attempts compared to those using cigarettes. According to recent reports, e-cigarettes or HTP users are often used as smoking aids because of the perception that e-cigarettes or HTPs are not as harmful to health as cigarettes, do not smell, and are convenient for smoking freely at school and home [13, 36]. Adolescent tobacco users may try e-cigarettes or HTPs as a tobacco-use cessation aid; however, they fail to quit and end up becoming dual users . Similarly, the number of adolescent dual users have increased overseas , underscoring the need to review the use of e-cigarettes and HTPs. Recent research has suggested the negative health effects of e-cigarettes [36, 38], indicating the need to clearly understand the conflicting evaluations on the effects of e-cigarettes and HTPs. In addition, the diversity of e-cigarette and HTPs is making consensus or regulation of these products difficult. In the future, it will be necessary to specifically examine administrative regulations on the production and sale of e-cigarettes and HTPs based on medical evidence. These efforts may help prevent and reduce tobacco use by adolescents.
The recognition of health hazards via warning images on cigarette packs appears to be the most significant factor in tobacco-use quit attempts in adolescent tobacco users. These have been found to have a positive influence helping adolescents understand the risks of using tobacco . Additionally, viewing health warning signs typically induces health behavior; thus, emphasizing these warning signs as much as possible is of utmost importance . The warning images on cigarette packs have also been found to be more effective for adolescent non-tobacco users compared to tobacco users  and may be effective in encouraging tobacco-use prevention in adolescents. As the age of tobacco users continues to decrease in adolescents, it is also necessary to develop more effective warning images and messages that target this age group.
In this study, adolescents who experienced secondhand smoke at home had fewer tobacco-use quit attempts compared to those who had not experienced secondhand smoke at home. Adolescents are more likely to smoke if a member of their family smokes and are more likely to adopt an accepting attitude toward smoking . Exposure to secondhand smoking at home has been found to influence asthma, depression, and perceived stress in adolescents, which should act as a warning against smoking at home by adult smokers . Furthermore, exposure to secondhand smoking at home is associated with female and younger adolescents, as they tend to spend more time at home compared to older, male adolescents, making them more exposed to secondhand smoke when there is a smoker in their family . Therefore, family members quitting smoking is necessary to prevent adolescents from using tobacco and for adolescent tobacco users to try to quit using tobacco.
Our research has several limitations. First, there was no information on the individual duration of tobacco-use quit attempts, as this was not included in the raw datasets. Therefore, we were unable to evaluate the relationship between factors influencing tobacco-use quit attempts in adolescent tobacco users and the periods of successful tobacco cessation. Second, cigarette smokers, e-cigarette users, and HTP users were classified into one tobacco user group. Some people can use an e-cigarette to quit smoking. However, according to the results of previous studies in Korea, adolescents who use e-cigarettes showed a pattern of smoking more frequently and using more cigarettes . In addition, when HTPs were used, the purpose of the use was not smoking; there were many cases where it was used as a substitute for smoking . In our study, the number of exclusive e-cigarette users was considerably small, and most of the e-cigarette users were also using HTPs. Finally, it was not possible to clearly determine whether the e-cigarette users may be a group that previously used tobacco. It is necessary to investigate the purpose of e-cigarette use when collecting data from The Youth Health Behavior Surveys conducted in the future.
Despite these potential limitations, this study utilized national statistical data that represent the health behaviors of Korean adolescents to explore various aspects of the factors influencing tobacco-use quit attempts. As highlighted in existing literature, adolescent tobacco users need to be continuously monitored and provided with appropriate interventions.
However, most tobacco-cessation policies for adolescents that are currently implemented by the Korean government are mainly regulatory policies . This study confirmed that, although regulatory and deterrence policies related to the environmental dimension were showing an effect, adolescents’ healthy behavior, such as participation in sports activities and vigorous physical activities, was also an important factor influencing attempts to quit using tobacco. Therefore, it is urgent to develop specific policies encouraging individual healthy behaviors to promote Korean adolescent tobacco users’ attempts to quit tobacco.
As adolescents have been using tobacco for shorter periods compared to adult tobacco users, they have lower levels of nicotine dependence , which may increase the likelihood of successful cessation of tobacco use. Schools and communities must provide various physical activity programs in addition to tobacco-cessation education, which can help develop an environment where adolescent tobacco users can escape the temptation of using tobacco. As government support and policy can influence tobacco-use cessation in adolescents, it is necessary to develop clear tobacco-cessation policies (i.e., clear agreement and regulation over the diverse range of e-cigarette products) and content that can induce attempts to quit among adolescent tobacco users.
This study identified factors relating to attempts to quit using tobacco in Korean adolescent tobacco users in multiple dimensions. We analyzed the data of 4028 adolescent tobacco users found in the 2019 Korea Youth Health Behavior Survey in terms of physical, psychological, behavioral, and environmental dimensions. We confirmed that Korean adolescent tobacco users’ attempts to quit using tobacco are related to behavioral and environmental dimensions. This study is meaningful in that it has provided evidence-based results for the practical application of tobacco-cessation policy for adolescents in Korea.
Availability of data and materials
Please contact the corresponding author for data requests.
Body mass index
Adjusted odds ratio
Heated tobacco products
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Kang, MJ., Lee, H. & Jo, M. Analysis of multidimensional factors in attempts to quit using tobacco by Korean adolescents. Environ Health Prev Med 25, 71 (2020). https://doi.org/10.1186/s12199-020-00913-1