• Journal of Korean Academy of Nursing
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• v.32 no.2
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• pp.254-264
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• 2002

This study was conducted to identify and compare the stressors and coping behaviors of high school students who experienced suicidal ideation vs those who do not. Method: The data were collected from 1,441 high school students living in the middle region of Korea. Researchers collected the data using Adolescent Stress Inventory and Adolescent Coping questionnare from February to May of 1999. Data were analyzed using X2, T-test. Result: A significant proportion (31.9%) of subjects had thought about suicide during the past 6 months, 297 girls (35.3%) and 163 boys (27.2%). Major stressors of subjects who experienced suicidal ideation were academic problems, conflicts between family members, and changes in sleeping or eating patterns. Conflicts with family members contributed to have suicidal ideation. There was no significant difference in helpful coping behaviors between the two groups. The group who experienced suicidal ideation had lower scores and fewer coping behaviors. Boys perceived more stressors and had fewer helpful coping behaviors than girls. Conclusion: It is necessary to develope school-based suicide prevention programs. Our findings suggest that the program should focus on problems related to studying and conflicts within the family.

• Journal of the Korean Society of School Health
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• v.29 no.3
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• pp.189-200
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• 2016

Purpose: The purpose of the study is to examine the factors that influence Korean adolescents' depression and suicidal ideation from individual, social and environmental perspectives by gender. The study used the date of the 2015 Korea Youth Risk Behavior Web-based Survey and the subjects were 68,043 middle and high school students. The levels of depression and suicidal ideation were the dependent variables and the factors influencing the dependent variables included 11 individual factors, 3 social factors and 7 environmental factors. The data were analyzed using odds ratios (OR) from multi-variable logistic regression analysis. As a result, the most significant individual factors that influenced both depression and suicidal ideation were stress and subjective happiness both in boy and girls, the most significant social factor was participation in violence treatment programs, and the most significant environmental factors were economic status, father's educational level, and whether or not they lived with their family. Therefore, programs and policies to improve adolescents' mental health should be developed considering individual, social, and environmental factors.

• The Korean Journal of Health Service Management
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• v.6 no.4
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• pp.295-308
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• 2012

This study aimed to investigate gender differences in prevalence and correlates of depression and suicidal ideation among Korean adolescents. The analysis was performed using data from the 2009 Korean Youth Risk Behavior Web-based Survey. Logistic regression models and Wald chi-square statistics were used to identify the difference in the coefficients between the gender-specific models. Female students reported higher prevalence for depression(42.9%) than male students(31.4%), as well as higher level of suicidal ideation(girls:23.1%, boys:14.7%). Lower school achievement, worse self-rated health status, more conflicts were associated with higher level of depression and suicidal ideation. The impact of school achievement and conflicts with friends on mental health was greater among girls than boys. We suggest that the efficient strategies focusing on the gender differences should be established to improve mental health among Korean adolescents.

• The Journal of Information Systems
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• v.28 no.3
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• pp.249-276
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• 2019

Purpose The purpose of this study is to develop a prediction model and decision rules for the elderly's suicidal ideation based on the Korean Welfare Panel survey data. By utilizing this data, we obtained many decision rules to predict the elderly's suicide ideation. Design/methodology/approach This study used classification analysis to derive decision rules to predict on the basis of decision tree technique. Weka 3.8 is used as the data mining tool in this study. The decision tree algorithm uses J48, also known as C4.5. In addition, 66.6% of the total data was divided into learning data and verification data. We considered all possible variables based on previous studies in predicting suicidal ideation of the elderly. Finally, 99 variables including the target variable were used. Classification analysis was performed by introducing sampling technique through backward elimination and data balancing. Findings As a result, there were significant differences between the data sets. The selected data sets have different, various decision tree and several rules. Based on the decision tree method, we derived the rules for suicide prevention. The decision tree derives not only the rules for the suicidal ideation of the depressed group, but also the rules for the suicidal ideation of the non-depressed group. In addition, in developing the predictive model, the problem of over-fitting due to the data imbalance phenomenon was directly identified through the application of data balancing. We could conclude that it is necessary to balance the data on the target variables in order to perform the correct classification analysis without over-fitting. In addition, although data balancing is applied, it is shown that performance is not inferior in prediction rate when compared with a biased prediction model.

• Journal of Preventive Medicine and Public Health
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• v.48 no.1
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• pp.28-37
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• 2015

Objectives: Among the Korean elderly (those 65 years of age and older), the suicide rate is 80.3/100 000 people, which is ten times higher than the Organization for Economic Cooperation and Development average. Because South Korea is rapidly becoming an aging population, this high elderly suicidal rate will only get worse. Although the size of the elderly suicide problem is quite large, previous research in South Korea has surveyed restricted areas and not the entire country. Even though the factors that affect elderly suicide are complicated, there has been little research into these influencing factors. Thus, this research uses the national survey data (Community Health Survey) that was obtained in 2009. Additionally, we analyze factors affecting elderly suicidal ideation and attempts as well as the paths of these effects. Methods: Community Health Survey data obtained by the Korea Centers for Disease Control and Prevention in 2009 was used for this study. We additionally examined the factors that affect suicide with chi-squared tests, t-tests, Pearson's correlation test, and path analysis. Results: Depressive symptoms and suicidal ideation are the only factors that directly affect suicidal attempts. Demographic, behavioral, and physical activity factors have indirect effects on suicidal attempts. Conclusions: Depression has the strongest influence on suicidal ideation and attempts. Demographic, behavioral, and physical activity factors affect suicidal attempts mostly through depressive symptoms. In addition, there is a path that suggests that demographic, behavioral, and physical activity factors affect suicidal attempts not through depression symptoms but only through suicidal ideation. This means that the elderly who do not have depression symptoms attempt suicide according to their own situations and characteristics.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.14 no.5
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• pp.2131-2139
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• 2013

This study clearly identify the correlation between adolescents resiliency and suicidal ideation and more effective to strengthen the external protective factors for adolescents suicide prevention alternatives presented. Research subjects were 243 boy and girl first year students in a high school located in Kyunggi Province; Questionnaires were distributed for one week from March 5, 2013. Frequency analysis, correlation analysis, multiple regression analysis, t-test, one-way ANOVA, etc. were executed. All empirical tests were verified with 5% of significance level. From the result of analysis, suicidal ideation has a negative correlation with the adolescent resilience, and especially, when interaction in family dimension and the care, expectation level of school and peer dimension become higher, suicidal ideation was reduced. The implications of this study suggest that the material prepared for suicide prevention policy based on the results of a study on the impact of adolescents resiliency to suicidal ideation.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.14 no.8
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• pp.3804-3814
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• 2013

This study examined the fitness of a structural model on the relationship among biological risk disposition, sociocultural risk factors, self-control, social support, and suicidal ideation for woman adolescents. Data were collected from December 3, 2012 to March 28, 2013 by questionnaires from 343 middle and high school students in the D metropolitan city. The data was analyzed by the SPSS and AMOS programs. Biological risk disposition, sociocultural risk factors, self-control, and social support showed a direct effect on suicidal ideation for woman adolescents, while biological risk disposition and sociocultural risk factors showed an indirect effect on suicidal ideation for woman adolescents. Biological risk disposition and sociocultural risk factors showed a direct effect on self-control and social support for woman adolescents. Based on the outcomes of this study, it is necessary to design an intervention program that emphasizes the reducement of biological risk disposition, sociocultural risk factors and enhancement self-control and social support in order to prevention woman adolescents' suicidal ideation.

• Research in Community and Public Health Nursing
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• v.29 no.1
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• pp.1-10
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• 2018

Purpose: The purpose of this study was to examine the prevalence and risk factors of suicidal ideation among middle class Korean. Methods: Cross sectional study was designed for secondary data analysis. From the 8th Korea Health Panel survey (2008~2013), a total of 6,037 data was drawn and analyzed by developmental stage using descriptive statistics including frequency, percentage, $x^2$ test, and logistic regression analysis. Results: Across all age groups, high physical-mental stress, frustration, anxiety about the future and low self-perceived health status or social class were found to be the risk factors of suicidal ideation. Peer-compared subjective health status and frustration significantly influenced the adolescents. The young adults'suicidal ideation was mainly influenced by physical and mental stress, frustration and absence of economic activity. For the middle-aged, physical and mental stress, frustration, future anxiety, low peer-compared subjective health status were found to be the major influencing factors. The predominant risk factors for the elderly were frustration and low peer-compared subjective health status. Conclusion: Making comparisons to others significantly influence suicidal ideation throughout all life cycles. Improvement of mental health and suicide prevention can be enhanced by avoiding negative comparison to others.

• The Journal of the Korea Contents Association
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• v.12 no.12
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• pp.261-268
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• 2012

This study investigates suicidal ideation and its associated factors by sex in adolescents, focusing health behaviors and health status. For this study, data of 931 adolescents(11-18years) from the Fifth Korean National Health and Nutrition Examination Survey(KNHANES V-1, 2010) were analyzed. Those who had activity limitation, depression, less exercise showed higher suicidal ideation. For male adolescents, those who were high school student compared with middle school showed lower suicidal ideation and had depression showed higher suicidal ideation. On the other hand, the risk factors of suicidal ideation for female adolescents were activity limitation, smoking experience, depression, less exercise. The development of suicide prevention program for adolescents requires different approaches for each sex.

• Korean Journal of Social Welfare
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• v.68 no.3
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• pp.181-201
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• 2016

Using a nationally representative sample from three recent waves of the Korean Welfare Panel Study, this study examined the association between experiencing material hardship and suicidal ideation among low-income households in South Korea. Overall, we found that experiencing material hardship was associated with a higher likelihood of having suicidal ideation. We also found that, among individual items of material hardship, experiencing food insecurity or credit problems was associated with a higher likelihood of having suicidal ideation. Furthermore, we found that the association of experiencing material hardship with having suicidal ideation was more pronounced for male-headed or elderly-headed households. Policy implications to improve living condition among low-income households and reduce their suicide-related behavior were discussed.