• The Korean Journal of Applied Statistics
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• v.28 no.2
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• pp.325-334
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• 2015

Elderly suicide rates tend to be high in Korea. Suicide by the elderly is no longer a personal problem; consequently, further research on risk and regional factors is necessary. Disease mapping in epidemiology estimates spatial patterns for disease risk over a geographical region. In this study, we use a simultaneous conditional autoregressive model for spatial correlations between neighboring areas to estimate standard mortality ratios and mapping. The method is illustrated with cause of death data from 2006 and 2010 to analyze regional patterns of elderly suicide in Korea. By considering spatial correlations, the Bayesian spatial models, mean educational attainment and percentage of the elderly who live alone was the significant regional characteristic for elderly suicide. Gibbs sampling and grid method are used for computation.

• Clinical and Experimental Emergency Medicine
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• v.5 no.4
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• pp.230-239
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• 2018

Objective The suicide rate in South Korea is very high and is expected to increase in coming years. Intoxication is the most common suicide attempt method as well as one of the common reason for presenting to an emergency medical center. We used decision tree modeling analysis to identify predictors of risk for suicide by intentional intoxication. Methods A single-center, retrospective study was conducted at our hospital using a 4-year registry of the institute from January 1, 2013 to December 31, 2016. Demographic factors, such as sex, age, intentionality, therapeutic adherence, alcohol consumption, smoking status, physical disease, cancer, psychiatric disease, and toxicological factors, such as type of intoxicant and poisoning severity score were collected. Candidate risk factors based on the decision tree were used to select variables for multiple logistic regression analysis. Results In total, 4,023 patients with intoxication were enrolled as study participants, with 2,247 (55.9%) identified as cases of intentional intoxication. Reported annual percentages of intentional intoxication among patients were 628/937 (67.0%), 608/1,082 (56.2%), 536/1,017 (52.7), 475/987 (48.1%) from 2013 to 2016. Significant predictors identified based on decision tree analysis were alcohol consumption, old age, psychiatric disease, smoking, and male sex; those identified based on multiple regression analysis were alcohol consumption, smoking, male sex, psychiatric disease, old age, poor therapeutic adherence, and physical disease. Conclusion We identified important predictors of suicide risk by intentional intoxication. A specific and realistic approach to analysis using the decision tree modeling technique is an effective method to determine those groups at risk of suicide by intentional intoxication.

• Industry Promotion Research
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• v.3 no.2
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• pp.63-78
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• 2018

This study used survey research method to identify factors affecting suicidal ideation in adolescents. The results of this study are as follows. First, it is necessary to narrow the psychological distance between the parents and the adolescents, to make efforts in each family to be more harmonious within the family, and to reduce consciously the physical and verbal violence which is sometimes unintentionally applied between the parents. Second, when adolescents attempt suicide, counseling agencies in schools, educational institutions, and local communities should be able to respond effectively to adolescent crisis situations, and follow-up measures such as suicide prevention education and suicide attitude education must be conducted Efforts should be made to reduce juvenile delinquent suicide and impulsive suicidal thoughts. Third, when developing adolescent suicide prevention and related programs, differentiated programs and suicide prevention education should be tried. Fourth, I think that it is necessary to prevent the suicidal thoughts of adolescents by early detection and intervention of high - depression adolescents by establishing a system that can be applied to adolescents out of school.

• Journal of the Korea Convergence Society
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• v.11 no.5
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• pp.299-307
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• 2020

The purpose of this study was to explore what chiefs of tong/ri' experiences in suicide prevention activities are and what their changes are. The study participants are three chiefs of tong/ri who have participated in suicide prevention activities for more than two years in the community. In order to gain a deeper understanding of their respective experiences, used a qualitative method of narrative study. Chiefs of tong/ri' experiences experience in participating in suicide prevention activities consisted of start, experience, change and growth. The meaning is as follows. They did a "light start" with the idea that they could do it easily in their original activities. "Escape from the burden" of learning and maintaining each of own ways in the difficult problem of suicide prevention, "Responsibility as a chief" was the driving force behind suicide prevention activities. They were able to find "change of their own" because of the activity naturally.

• 한국노년학
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• v.36 no.3
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• pp.649-671
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• 2016

The purpose of this study was to identify the meaning of performance experienced in the process of practicing at the elderly suicide prevention center. Therefore, the actual results perceived from the subjective viewpoints of the chiefs, staff and service users from the public institutions, which offer the elderly suicide prevention services were examined. The results classified the service provider's view, service users view and multi-dimensional view. The research method is a case study of qualitative research method. The results of the study found that the analysis commonly perceived from the perspectives of both the chiefs and staff from the public institutions offering elderly suicide prevention service were 'the perception of structural obstacles during the process of practicing the services and focused on the achievement of experiencing changes in the service users and the community'. On the other hand, the analysis from the perspective of the service users turned out to be 'focusing on changes in the users'internal perception according to service experiences'. The meaning and essence of the analytical results perceived from each perspective are summarized as follows. First, the analytical results perceived of the chiefs of public institutions offering elderly suicide prevention service were 'the process in which the identification of the institution is rediscovered through the service'. Second, the analytical results perceived by the staff from the institution were 'being acknowledged in the community and organization while experiencing changes in the service users in the process of struggling to survive in such community and organization'. Third, the analytical results perceived by the service users were 'holding on to the lifeline at the edge of a precipice'. Based on the results, political and practical implications of elderly suicide prevention service were discussed.

• Journal of Korean Academy of Fundamentals of Nursing
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• v.15 no.3
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• pp.387-394
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• 2008

Purpose: This study was done to identify whether the program, improving adjustment to military life would have an effect on stress, depression, idea of suicide, adjustment to military living, and self-esteem in auxiliary police. Method: This quazi experimental study using a non-equivalent control group pretest and posttest design was conducted from February 1 to May 30, 2007. Using convenience sampling, the researcher recruited 120 auxiliary police and randomly assigned each to either the experimental and the control group. The experimental group received an 8-week program to improve adjustment to military life. Results: Anxiety, stress, depression, idea of suicide, self-esteem, and adjustment to military living were significantly different between the experimental and control groups. Conclusion: These results suggest that programs to improve adjustment to military life would improve psychological health and adaptation of military living in auxiliary police. Replication studies are needed to confirm the effects of this program and to identify the long-term maintenance effects of the program.

• Journal of The Korean Society of Clinical Toxicology
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• v.15 no.1
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• pp.47-50
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• 2017

Nitrogen is an inert gas that is harmless to humans under normal conditions. While it is not inherently toxic, nitrogen gas becomes dangerous when it displaces oxygen, resulting in suffocation. Herein, we report a case of a 34-year-old man who attempted suicide by nitrogen asphyxiation who presenting with decreased mental function and agitation. Lactic acidosis and hyperammonemia were observed on presentation at the emergency department, but these improved after a few hours. After 2 days, the patient regained full consciousness, and was discharged without any complications. Survival after asphyxiation due to nitrogen gas is very rare, and these patients are more likely to have poorer outcomes. There is a potential for the increasing use of nitrogen gas as a method of committing suicide because of the ease of access to this gas.

• The Journal of Korean Association of Computer Education
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• v.17 no.6
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• pp.115-122
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• 2014

One of the problems with current youth generations is increasing rate of violence and suicide in their school lives, and this study aims at the design of a sentiment analysis system to prevent suicide by uising big data process. The main issues of the design are economical implementation, easy and fast processing for the users, so, the open source Hadoop system with MapReduce algorithm is used on the HDFS(Hadoop Distributed File System) for the experimentation. This study uses word count method to do the sentiment analysis with informal data on some sns communications concerning a kinds of violent words, in terms of text mining to avoid some expensive and complex statistical analysis methods.

• Journal of Korean Public Health Nursing
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• v.36 no.2
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• pp.157-169
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• 2022

Purpose: This study aimed to implement a model for predicting the presence or absence of suicidal ideation in adolescents by using the decision tree analysis method. Methods: This study is a secondary data analysis using the 2019 Child and Adolescent Human Rights Survey, the most recent data published by the Korea Youth Policy Institute. In order to identify the variables predicting suicidal ideation, a decision tree analysis with suicidal ideation as a dependent variable was performed. Results: This study found that the variables of life satisfaction, insults from parents, sex, and cyber-bullying experience of adolescents were selected as significant predictors of suicidal ideation. It is predicted that 58.2% of subjects with low life satisfaction would think of suicide. Among them, the probability of thinking of suicide increased to 72.7% in the case of unhappy people, and the probability of thinking of suicide in the case of a woman increase to 82.9%. Conclusions: It is necessary to consider family, school, and society environment to prevent suicidal ideation of adolescents.

• Korean Journal of Biological Psychiatry
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• v.22 no.4
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• pp.187-194
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• 2015

Objectives To examine direct causes of attempted suicides, methods adopted to commit suicide, and psychiatric diagnoses among suicide attempters in South Korea. Methods A total of 1359 suicide attempters who had visited emergency department of 17 medical centers due to suicide attempt from May 2013 to Nov 2013 were interviewed using semi-structured questionnaires. Results Psychiatric symptoms were the most common cause of suicide attempts (62.2%), followed by interpersonal relationships (24.4%). Women attempted suicide more often for interpersonal reasons, whereas men were more likely to do so for financial and job-related reasons. Half of participants (55.8%) attempted suicide by drug intoxication, which was more prevalent among females and those who had previous history of psychiatric disease or previous suicide attempt. Men were more likely to use more lethal methods such as pesticide poisoning and gas inhalation than women. Pesticide poisoning was also prevalent among the elderly group and the rural population. Near ninety-five percent (94.5%) of participants received a psychiatric diagnosis : the most frequent diagnosis was depressive disorder. Conclusions This is the first nationwide study of cases of attempted suicide. When stratified by age groups, gender, urbanicity, living alone or not, presence of physical illness, previous psychiatric history, and previous suicide attempt, there were significant differences with respect to causes, methods of attempted suicides and psychiatric diagnoses of suicide attempters.