• Research in Community and Public Health Nursing
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• v.26 no.2
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• pp.100-107
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• 2015

Purpose: To explore the association between sleep and the risk of accidental injury at school among Korean adolescents. Methods: From the database of the Ninth Korea Youth Risk Behavior Web-based Survey (KYRBS), the researcher selected 63,307 adolescents who responded to a survey on sleep hours. We conducted logistic regression with sleep duration and fatigue after sleep as independent variables, the risk of injury at school as a dependent variable, and gender, grade, school type, economic status, parents' education level, number of participations in physical education, and current smoking and drinking as control variables. Results: Using 9 hours of sleep as the reference, the adjusted injury risk (odds ratio) was 1.74 for those sleeping less than 5 hours a day, 1.61 for 5 hours, 1.45 for 6 hours, 1.31 for 7 hours, 1.13 for 8 hours, and 1.40 for 10 hours or longer. The difference between each pair of groups was statistically significant. In this study, injury risk increased as sleep duration decreased and fatigue after sleep increased. Conclusion: The findings suggest that a short nightly duration of sleep and fatigue after sleep can be considered potential risk factorsfor unintentional injuries at school among Korean adolescents.

• International Journal of Contents
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• v.13 no.2
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• pp.6-13
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• 2017

It is a well-known fact that Internet addiction adversely affects mental health of adolescents. This study was conducted to determine whether there is a difference in the experience of depression according to the level of Internet addiction. Participants included 73,238 middle and high school students from the Korean Youth Risk Behavior Web-based Survey (KYRBWS) conducted in 2010. The level of Internet addiction and the experience of depression were assessed using self-diagnosis questionnaires. Multiple logistic regression analysis was used to identify the association between Internet addiction and depression. High-risk and potential-risk Internet users were 1.61 times and 1.21 times more likely to experience depression, respectively, than normal Internet users. The increase in depression was more significant in girls students. Acknowledging the connection between Internet addiction and depression, the problem should be tackled from the perspective of school health by providing systematic Internet addiction prevention and treatment programs.

• Child Health Nursing Research
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• v.23 no.2
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• pp.137-146
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• 2017

Purpose: The purpose of this study was to identify the influence of early menarche on sexual experience among high school girls in South Korea. Methods: The study sample was comprised of 16,286 high school girls. Using statistics from the 11th (2015) Korea Youth Risk Behavior Web-based Survey, hierarchical logistic regression analysis was conducted. Results: Among the girls, 5.8% reported early menarche. Early menarche was associated with sexual experience (Odds Ratio (OR), 5.27; 95% Confidence Interval (CI), 4.11-6.77). Controlled for sociodemographic, emotional and health behavior characteristics, early menarche was associated with sexual experience (OR, 3.98; 95% CI, 3.04-5.21). Conclusion: The results indicate that early menarche predicts an increase in sexual experience among female adolescents. Therefore, health education programs and health policy for interventions to improve sexual health are required for girls who are expected to experience early menarche.

• Research in Community and Public Health Nursing
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• v.28 no.3
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• pp.240-250
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• 2017

Purpose: In South Korea, suicide mortality has rapidly increased, so it has become a major public health concern. Multicultural adolescents are regarded as a high-risk group due to their situation. In this study, we compared the prevalence and risk factors of suicide ideation between Korean and multicultural adolescents. Methods: Data from the eleventh Korean Youth Risk Behavior Web-based Survey (2015), collected by the Korean Centers for Disease Control and Prevention, were statistically analyzed using the descriptive statistics and multivariate logistic regression. The total participants were 63,376 in numbers. They were composed of 62,649 (98.9%) Korean and 727 (1.1%) multicultural adolescents. Results: I found that the prevalence of suicide ideation was significantly higher among the multicultural adolescents (15.8%) compared with those of Korean (11.3%). The risk factors of suicide ideation in the Korean group were co-residence without family, poor perceived health status, depressive mood, high stress level, poor perceived happiness level, and experience of violence. Conversely, the risk factors of the multicultural group were smoking, depressive mood, and experience of violence. Conclusion: These findings suggest that appropriate and practical prevention strategies should focus on psychological and environmental factors in order to prevent suicide ideation and reduce suicide behavior in Korean and multicultural adolescents.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.16 no.11
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• pp.7321-7328
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• 2015

This study aimed to identify the difference and relation of eating and mental-psychological state according to the level of cigarette consumption in adolescents and to provide the basic data for the effective smoking cessation program. Data were obtained from the Ninth Korea Youth Risk Behavior Web-based Survey (2013 KYRBS). SPSS 18.0 was used to analyzed with descriptive statistics, ${\chi}^2$-test and Pearson's correlation coefficient. The results showed eating and mental-psychological state was a significant difference according to the level of cigarette consumption. Smoking amount were negative related to eating(r=-.154, p<.01) and there were positive related to mental-psychological state(r=.122, p<.01). There is negative correlation between eating and mental-psychological health(r=-.165,p<.01). Therefore, it is necessary to include eating and mental-psychological health to develop smoking cessation program for adolescents.

• Asian Pacific Journal of Cancer Prevention
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• v.16 no.15
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• pp.6273-6278
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• 2015

Objective: This study assessed the association between subjective body image or objective body mass index (BMI) and the risk of daily smoking in Korean adolescents, with a purpose of identifying the most suitable models. Materials and Methods: Using the 2013 9th Korea Youth Risk Behavior Web-based Survey data for 72,435 students, odds ratios were calculated for daily smoking in the past month, according to the subjective body image and calculated BMI using a respective multiple logistic regression model. The combined effect of these two factors was also analyzed by pairing a BMI category with a subjective body image category, using odds ratios for the same event within each sex group. Results: Among the surveyed students, 7.2% of boys and 1.8% of girls were classified as daily smokers. Students who perceived themselves as being very obese tended to be at lower risk of daily smoking (OR=0.61 in boys with 95% CI=0.47 to 0.79; OR=0.66 in women with 95% CI=0.47 to 0.93). In addition, boys within the obese or overweight BMI category showed a lower risk of daily smoking (OR=0.86, 95% CI: 0.77-0.96). Lean BMI was significantly associated with higher odds ratios for daily smoking only in female students (OR=1.24, 95% CI: 1.02-1.52). When pairing these two objective and subjective factors, results suggested that subjective body image has a greater effect on daily smoking than BMI in both boys and girls. Conclusions: In both male and female students, subjective body image had a greater effect on daily smoking than body mass index. A model using the combination of BMI and subjective body image was the best fit in girls, in contrast to the model using subjective body image only best suitable in boys, for the prediction of daily smoking. These results including several factors associated with daily smoking in Korean students, provide useful data for the development and implementation of smoking intervention and cessation programs for adolescents.

• Korean Journal of Health Education and Promotion
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• v.31 no.3
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• pp.39-50
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• 2014

Objectives: The purpose of this study is to examine the factors for self-rated health by gender in South Korean adolescents. Methods: The population consisted of a nationally representative sample of adolescents(n= 37,414 boys, 37,522 girls) in middle and high school who completed the Korea Youth Risk Behavior Web-based Survey(KYRBWS) in 2011. Using logistic regression analysis, self-rated health was regressed on all predictors, including socioeconomic factors, behavioral and psychological factors. All analysis were conducted according to gender. Results: Girls showed more negative self rated health than boys (respectively 28.4%, 40.7%). Adolescent perceptions of health was associated with socioeconomic status, behavioral and psychological factors. Logistic regression analysis revealed that physical activity, body weight perception, despair, level of happiness and stress were the main influencing factors. Conclusions: The findings show that adolescent perceptions of their health are associated with overall sense of functioning, which are associated with health behaviors and psychological factors. Further interventions that focus on improving health behaviors and psychological health may make adolescents more healthy.

• The Journal of Korean Society for School & Community Health Education
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• v.20 no.1
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• pp.43-56
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• 2019

Objectives: This study was to investigate the effects of sexual orientation related to sexual intercourse on smoking behavior. Methods: The study includes 33,309 Korean high school students. Of these, 31,213 had no experience of sexual intercourse, 1,739 had sexual intercourse with the heterosexual, 191 had sex with the homosexual, and 166 had sexual intercourse with the bisex. The study used 12th(2016) Korea Youth Risk Behavior Web-based Survey with complex sample logistic regression. Results: Adjusted confounding variables were analyzed, and it showed that smoking behavior was higher in the group had experienced sexual intercourse. The group had homosexual intercourse (OR=1.84, 95%CI=1.31-2.57) or bisexual intercourse (OR=2.78, 95%CI=2.06-3.76) showed higher risk of smoking behavior than the group had heterosexual intercourse (OR=1.67, 95%CI=1.48-1.90 Conclusions: The study results showed sexual orientation related to sexual intercourse was associated with smoking behavior. Further follow up studies and evaluations are needed.

• Journal of the Korean Society of School Health
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• v.31 no.2
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• pp.70-78
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• 2018

Purpose: This study investigated the predictors of Sexually Transmitted Infections (STI) among female teenagers in Korea who have had intercourse at least once. Methods: This study is based on the 12th Korea Youth Behavior Web-based Survey conducted in April 2016. Data were collected from 798 middle schools and high schools nationwide in Korea and 65,528 students participated. Among the participants, the subjects of this study were 537 female high school students (Grade 10~12). The data were analyzed through complex samples multiple logistic regression using SPSS statistics 22. Results: Among the 537 female adolescents, 11.9% replied they had experienced STI. The predictors of STI among the subjects were 'age at first intercourse' and 'sexual intercourse after drinking'. The risk of STI was lower in the middle (OR=0.26, 95% CI=0.10~0.64) and high school (OR=0.11, 95% CI=0.04~0.27) age groups than those who had their first sexual intercourse at an elementary school age. The sexual intercourse after drinking group had a higher risk of STI, compared to the no sexual relation after drinking group (OR=2.54, 95% CI=1.28~5.07). Conclusion: Practical sex education programs should begin from the elementary stage in order to protect more female adolescents from STI. In addition, sex education including an alcohol prevention program should be considered to lower STI among female adolescents.

• Korean Journal of Health Education and Promotion
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• v.32 no.5
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• pp.53-62
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• 2015

Objectives: The purpose of this study was to examine the associations among self-rated health and socioeconomic status. Methods: Analyses were conducted based on cross-sectional data obtained from the Korea Youth Risk Behavior Web-based Survey. A total of 79,202 students aged 12 to 18 years participated in the study and there was a response rate of 95.5%. Separate logistic regression analyses were performed on each gender group based on a set of independent variables. Those being: the level of parental education level; family affluence scale; subjective household economic status; and subjective school achievement with SRH as the dependent variable. Results: Multivariate analyses revealed significant associations between each SES and adolescent SRH after controlling for other covariates. However, in the models that included all SES indicators, subjective household economic status and subjective school achievement remained significant in boys and girls. Conclusions: The findings demonstrated that subjective SES indicators are more closely related to adolescent SRH when compared with objective indicators.