• 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.

• 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.

• Korean Journal of Biological Psychiatry
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• v.28 no.2
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• pp.36-49
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• 2021

Suicide is a leading cause of death worldwide, especially among adolescents and young adults. Considering this fact, it is imperative that we understand the neural mechanisms underlying suicidal thoughts and behaviors in youth from a neurodevelopmental perspective. In this review, we focused on the magnetic resonance imaging studies that examined the neural correlates of suicidal ideations (SI) or attempts (SA) in youth. We reviewed twenty-three cross-sectional studies reporting the structural and functional alterations in association with SI or SA among adolescents and young adults with various mental disorders. The previous literature suggests that the dorsolateral prefrontal cortex, anterior cingulate cortex, and ventral frontolimbic circuit, may play an important role in the pathophysiology of suicidal behavior in youth through altered top-down control over emotion and impulsivity. Future studies with a longitudinal design and using multimodal imaging techniques may be of help to identify novel therapeutic targets specific for youth with suicidal thoughts and behaviors.

• Korean Journal of Clinical Pharmacy
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• v.22 no.4
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• pp.304-315
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• 2012

Today, suicide by self-poisoning of prescribed or non-prescribed drugs on purpose has been increasing and is a major cause of mortality. It is very important to treat promptly and properly for saving the lives from those suicides. There is neither an organization such as poison control center nor measurement in S. Korea, though. The object of this study was to evaluate information of frequently used substances for suicide attempt in S. Korea. Our results also can provide healthcare provider including pharmacists and doctors, etc and contribute to increasing health and welfare for Korean. From June $1^{st}$ 2006 to April $30^{th}$ 2012, we retrospectively studied patients visiting emergency room due to suicide attempt. We collected information of underlying disease, history of past medical condition and suicide attempt, ingredient and getting route of ingesting substances, emergency treatment, and outcome by reviewing electronic medical record. We also evaluated actual treatment of self-poisoning and made guide information about antidote medication for S. Korean healthcare provider. Among total 242 cases of suicidal attempts, cases ingesting substances including prescription, non-prescription drugs and agricultural chemicals were 86.4%. The most frequently used drugs for suicide attempt were sedatives-hypnotics (53.6%), followed by analgesics (16.7%) and antidepressants (12.4%). Analgesics including acetaminophen and aspirin were most in teenagers but sedatives-hypnotics including benzodiazepines, non-benzodiazepine (zolpidem) and antihistamine were most in other ages including elderly people. Most frequently used antidote was activated charcoal (62.7%) and specific antidotes for some substances (acetaminophen, aspirin, agricultural chemicals) were also treated properly, accompanying with medication for supportive care. In conclusion, the most used substances for suicide attempt were sedatives-hypnotics and treatments for self-poisoning in emergency room were appropriate based on existing references. Therefore, information of frequently used substances and antidote reflecting these results will be useful for South Korean healthcare provider.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.12 no.12
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• pp.5541-5549
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• 2011

The purpose of this study was to investigate the relationship self-control, stress, loneliness among University Students, to provide the basic data for prevention of suicide occurrence. Methods: The subjects of this study were 1,253 university students. The collected data was analyzed using descriptive statistics, $x^2$-test, t-test, Pearson correlation coefficient and stepwise multiple regression with SPSS 17.0 Program. Results: The degree of the suicide attempt was 13.6%. The reported scores for self-control, internet addiction, stress, self-efficacy, anxiety, loneliness were 69.9, 42.5, 86.4, 48.2, 46.2, 40.1, respectively. The degree of suicide attempt was significantly different according gender, religion, parents status, family economic status, living, friendship, exercise, alcohol drinking, loneliness, state anxiety, stress, self-control, and internet addiction. The influential factors affecting suicide attempt were parents status, internet addiction, gender, exercise, and loneliness, which explained about 5.5% of the variance. Conclusions: These result suggest that earlier screening and suicide prevention programs for university students will be helpful in preventing suicide attempt. Future studies need to be pursued to find various variances for suicide attempt for university students.

• Korea journal of population studies
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• v.31 no.1
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• pp.165-194
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• 2008

The main purpose of this study is to examine the suicide pattern during major holidays which are considered to be in high social integration - New Year's Day, Lunar New Year's Day, Harvest Festival (Chuseok) and Christmas. To confirm suicide patterns, this study hypothesized firstly, the number of suicides would decrease before and on each holiday, and secondly, the number of suicides would increase after each holiday. In detail, this study postulated different patterns by marital status and age groups. Utilizing "Causes of Death Statistics" from 2000 to 2005, the number of suicides by marital status and age group on each day is calculated and categorized by holiday. There are four major findings. First, the decrease in the number of suicides during holiday periods is significant. Second, different suicide patterns by marital status are not found. Third, the difference in suicide patterns by age groups is significant. Specifically, there is a decrease in the number of suicides of the old during Lunar New Year's Day and Harvest Festival (Chuseok). On the other hand, there is no changes in the number of suicides of the young during the same periods. Fourth, a decrease in the number of suicides regardless of marital status and age is found at the end of a year. These results mean that increased social integration is functioned as a "suicide immune system." However, each generation has its own main factor that increases social integration.

• Korean Journal of Psychosomatic Medicine
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• v.26 no.2
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• pp.127-134
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• 2018

Objectives : This study aimed to identify the group with high risk of suicide in general hospital inpatient by comparing the depression, anxiety, and distress and their clinical characteristics. Methods : The study included all patients admitted to a general hospital between January 2016 and December 2017, and the final 41,249 patients were analyzed. Distress thermometer (DT) and hospital anxiety-depression scale (HADS) were used for emotional state evaluation. Group with high risk of suicide was defined as showing more than 4 in the DT and more than 8 in one of the two subscales (anxiety and depression) of the HADS. Results : Among the subjects, 3,603 patients (8.7%) met the high-risk criteria for suicide. The group with high risk of suicide experienced more severe pain than the control patient group, and it was found that there was more underlying disease. Patients who reported pain showed higher scores than those who reported no pain on the DT and HADS subscales. Conclusions : Group with high risk of suicide showed more severe pain and more underlying disease. Therefore, suicide prevention program specifically targeted for the group with high risk of suicide should be developed according to the risk of the patient evaluated at the time of the admission.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.13 no.11
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• pp.5155-5162
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• 2012

The purpose of this study is to define the factor giving effect to Adolescent's suicide thinking by grasping the degree of the middle school student's victimization of violence and mental health and physical symptoms. The subjects of this study were 176 persons in middle school students. As collected data was using SPSS Win 17.0 for Hierarchical multiple regression analysis. The results of this study as follows. school violence, mental health and physical symptoms between the correlation analysis conducted to identify statistically significant results at the level of correlation between variables that were analyzed. school violence impact on suicide thinking. mental health impact on suicide thinking.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.16 no.1
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• pp.544-554
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• 2015

This study was performed to determine the factors related to suicide ideation among some middle school students. A self-administered questionnaires survey was administered to 975 middle school students in Gyeongin area during the period from May 1st to June 30th, 2013. As a result, the suicide ideation of respondents turned out to be significantly higher in the following groups: females, experience of smoking, experience of alcohol drinking, of which the self-recognized body type was fatty, with out regular eating, poor subjective health status, poor home atmosphere, low family life satisfaction, lower school grade, poor relationship with friends, school violence experienced, school life dissatisfaction, severe hopelessness, severe distress, and depression. In particular, the factors related to hopelessness are strongly correlated with the suicide ideation.

• Research in Community and Public Health Nursing
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• v.17 no.1
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• pp.112-124
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• 2006

Purpose: This study was carried out to investigate the relationships among suicidal risk, self-esteem, and spiritual well-being of high school students, and to provide basic data for developing suicide prevention programs. Method: The subjects of this study were 1.176 high school students from six academic high schools and two technical high schools in Daegu City. Data were collected from the 13th to the 25th of September 2004. The research tools were the Suicide Probability Scale developed by Go. Kim and Lee (2000), the Self-Esteem Inventory modified by Choi and Jeon (1993), and the tool of Spiritual Well-Being modified by Yoo (2002). Data were analyzed with SPSS Windows 11.0. Result: Variables that showed statistically significant difference in suicidal risk were school type, whether to have the best friends, the number of close friends, current relationship with close friends, experience of school violation, respect for the teacher, grades, financial condition, parents marital status, father's education level, mother's education level, home atmosphere, conversation with father, conversation with mother, smoking, drinking, experience of counseling for problems, whether to have physical illnesses, experience of thinking about suicide, experience of attempting suicide. Suicidal risk was in a significantly negative correlation with self-esteem and spiritual well-being. Conclusion: The researcher identified many different variables that affect the suicidal risk of high school students. Self-esteem and spiritual well-being were found to be in a significant correlation with suicidal risk. Therefore, the results of this study can be used as basic data and information for suicidal prevention programs.