• 생물치료정신의학
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• 제24권3호
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• pp.129-141
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• 2018

Suicide is a behavior that is intended to cause death by itself and requires medical treatment, resulting in suicidal attempt or completion. Suicide causes loss of life, damages the body, costs a lot of medical expenses, and causes families to fall into sorrow and suffering therefore this suicide is a huge loss to family and society. There have been attempts to reduce and prevent suicide by understanding the mechanism of suicide. The mechanism of suicide can be thought of as psychological mechanism and biological mechanism. In the past, if we considered the psychological and biological mechanisms separately, the development of neuroscience now connects and integrates these two. Psychological factors affect biological factors and biological temperaments also affect perception or thinking about the situation and increase psychological vulnerability. Distant factors in suicidal behavior-such as childhood adversity and family and genetic predisposition-increase the lifetime risk of suicide. They alter the response to stress and other processes through changes in gene expression and regulation of emotional and behavioral characteristics. Distant factors affect the biological system and consequently changes in these systems can increase the risk of suicide. In other words, the distal factor does not directly induce suicidal behavior but rather acts indirectly through developmental or mediating factors. These mediating factors are impulsive aggressive and anxious trait, and chronic use of substances. The mechanism of this disorder is the abnormality of the serotonin system and the abnormality of the lipid level. Proximal factors are associated with the onset of suicide events and include changes in the major neurotransmitter systems, inflammatory changes, and dysfunction of glial cells in the brain. A series of studies, including a variety of research methods and postmortem and in-vivo imaging studies, show the impairment of the serotonergic neurotransmitter system and hypothalamic-pituitary-adrenal axis stress response system for suicidal behavior. These disorders lead to suicidal behavior due to difficulty in cognitive control of mood, pessimism, reactive aggression, abnormality in problem solving abilities, excessive response to negative social signals, severe emotional distress, and cognitive dysregulation of suicidal ideation.

• 한국치위생학회지
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• 제19권5호
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• pp.777-789
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• 2019

Objectives: The purpose of this study was to investigate the relationship between oral health factors and suicidal ideation in adolescents in order to provide basic data for adolescent suicide prevention and oral health promotion. Methods: This study used data from the Korea Youth Risk Behavior Web-Based Survey held in 2017, in which a total of 62,276 youth participated. Data were analyzed by SPSS Ver. 22.0. Complex logistic regression analysis was used to analyze oral health factors related to suicidal ideation. Results: The effects of oral health on male students' suicidal ideation were as follows: brushing teeth 2-3 times a day was associated with decreased suicidal ideation (p<0.01), while suicidal ideation was increased in individuals who had experienced scaling within the past year (p<0.001), or, among experiences of oral disease within the last year, had reported prickling and throbbing pain (p<0.001), pain on the tongue and inside the cheeks (p<0.001), or bad breath (p<0.001). The effects of oral health on female students' suicidal ideation were as follows: brushing teeth 2-3 times a day was associated with decreased suicidal ideation (p<0.001), while suicidal ideation was increased in individuals who, among experiences of oral disease within the last year, had reported pain when chewing (p<0.001), pain on the tongue and inside the cheeks (p<0.01), or bad breath (p<0.001). Conclusions: The above results demonstrate that adolescent suicidal ideation and oral health factors are correlated, and it will be necessary to incorporate oral health interventions when planning or developing projects and programs for suicide prevention in adolescents.

• 한국임상보건과학회지
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• 제2권2호
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• pp.79-89
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• 2014

Purpose. This study was conducted to provide basic data on the subjective happiness index and identify factors influencing college professor and staff by describing their perception of general characteristics, health behavior, suicidal ideation, and subjective happiness index. Methods. A survey was conducted with 198 professor and staff who were working University on K city. Data were analyzed using descriptive statistics, t-test, ANOVA, Pearson correlation coefficients and multiple regression with SPSS window 18.0 program. Result. The Mean scores of Subjective happiness in college professor and staff was 4.66 on a scale of 7. There were significant differences on the subjective happiness Index for the followings: age, breakfast for 2 day, blood pressure (Lt systolic), health status index (EQ-VAS). There was a negative correlation between the subjective happiness Index and suicidal ideation. Factors influencing of subjective happiness in college professor and staff were identified as age (${\beta}=.201$), breakfast for 2 day (${\beta}=-.180$), blood pressure (Lt systolic) (${\beta}=-.244$), health status index (EQ-VAS) (${\beta}=.408$). These factors explained 35.1% of variance in subjective happiness in college professor and staff. Conclusion. Results indicate that factors influencing subjective happiness are suggesting the need to establish policies of health behavior. health behavior program for a life of happiness among college professor and staff.

• 대한불안의학회지
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• 제8권2호
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• pp.141-145
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• 2012

Objective : The purpose of this study was to describe and compare trends in suicidal ideation, suicidal attempt and suicide in Republic of Korea from 2006 to 2011. Such data are needed to guide policies to reduce suicidal behaviors. Methods : Data came from the 2006-2010 Korea National Health and Nutrition Examination Survey, Korea National Statistical Office and 2006-2011 Korean Epidemiologic Catchment Area Study Replication and 2007-2011 National Emergency Department Information System. Results : No change occurred between 2006-2011 in suicidal ideation, suicidal attempt, whereas suicide rate increased annually. Suicidal attempt events was decreased in age over 50. Suicidal attempts by poisoning and hanging have increased, although suicide caused by poisoning of insecticide have decreased. Especially, suicides caused by hanging have gradually increased in both sex. Conclusions : These finding suggest that fatal suicidal methods may influence increased suicidal rate. Instead of traditional suicidal process, investigation of other pathway about suicidal behaviors should be needed.

• Journal of Preventive Medicine and Public Health
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• 제55권5호
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• pp.455-463
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• 2022

Objectives: Economic hardship has a serious impact on adolescents' mental health. The financial impact of the coronavirus disease 2019 (COVID-19) pandemic was more severe for low-income families, and this also impacted adolescents. This study aimed to examine the associations of economic deterioration (ED) caused by the COVID-19 pandemic and low socioeconomic status (SES) with adolescents' suicidal behaviors. Methods: This study analyzed data from the 2020 Korea Youth Risk Behavior Web-based Survey, which included 54 948 middle and high school students. Odds ratios (ORs) of suicidal ideation, suicidal planning, and suicide attempts related to ED and SES were calculated using multivariable logistic regression. We calculated relative excess risks due to interaction to assess additive interactions. Results: The ORs for suicidal ideation, suicidal planning, and suicide attempts related to combined severe ED and low SES were 3.64 (95% confidence interval [CI], 3.13 to 4.23), 3.88 (95% CI, 3.09 to 4.88), and 4.27 (95% CI, 3.21 to 5.69), respectively. Conclusions: ED and low SES were significantly associated with suicidal behaviors in adolescents. Although no significant additive interaction was found, the ORs related to suicidal ideation, suicidal planning, and suicide attempts were highest among adolescents from low-income families with severe ED. Special attention is needed for this group, considering the increased impact of economic inequality due to the COVID-19 pandemic.

• 한국산학기술학회논문지
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• 제16권1호
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• pp.300-307
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• 2015

본 연구의 목적은 청소년 가정환경 요인과 폭력행동이 자살생각에 미치는 영향을 분석하고자 한다. 연구대상은 거제시 ${\bigcirc}$동의 청소년 남녀 430명을 대상으로 2014년 3월5일 부터 7월 2일 까지 설문조사를 실시하였다. 분석방법은 SPSS Win 18.0 프로그램을 사용하여 빈도분석, 요인분석, 신뢰도 분석, 다중회귀분석을 실시하여 유의수준 5%에서 검증하였다. 연구결과는 첫째는 가족의 지지 정도에 따라 폭력에 미치는 영향은 유의한 정(+)의 영향을 미치는 것으로 나타났다. 둘째, 부, 모의 지지와 의사소통, 모의 민주적 양육태도는 자살생각에 유의한 부(-)의 영향을 주는 것으로 나타났다. 셋째, 청소년 폭력행동은 자살생각에 유의한 정(+)의 영향을 미치는 것으로 나타났다. 본 연구의 시사점은 청소년의 폭력행동이 자살생각으로 이어지는 문제를 해결하기 위한 프로그램 개발 및 정책에 활용할 수 있는 기초자료가 될 것으로 사료 된다.

• Journal of the Korean Academy of Child and Adolescent Psychiatry
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• 제33권4호
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• pp.99-105
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• 2022

Objectives: Suicide is the leading cause of death among adolescents in South Korea, and depression and personality profiles have been identified as significant risk factors for self-injurious behavior. This study examined the influence of depressive mood and temperament/character on self-injury in adolescents. Methods: A total of 116 adolescents (aged 12-18 years) with a primary diagnosis of major depressive disorder (MDD) and their parents were enrolled in this study. The participants were divided into three groups based on adolescent's self-injury frequency, and their Children's Depression Inventory (CDI), Youth Self-Report (YSR), and Temperament and Character Inventory (TCI) scores were compared. Finally, mediation analysis was conducted to investigate the relationship between suicidal ideation and self-injury. Results: Of study participants, 75.9% answered that they had suicidal ideation, and 55.2% answered that they had engaged in self-injurious behavior in the last six months. There were significant differences in CDI and suicidal ideation among the groups. After adjusting for age and sex, mediation analysis indicated that depressive mood mediated the relationship between suicidal ideation and self-injury. Conclusion: This study emphasizes the importance of evaluating and managing depressive mood severity in adolescents with MDD as these factors partially mediate the transition from suicidal ideation to self-injury.

• 한국학교보건학회지
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• 제28권1호
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• pp.1-9
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• 2015

Purpose: The purpose of this study is to examine the effect of sleep duration on suicidal ideation in Korean adolescents. Methods: This study used the data drawn from Korea Youth Risk Behavior Web-Based Survey in 2013. A total data of 63,301 adolescents were included in the analysis. Included variables were general characteristics, health status variables, hours of sleep, and suicidal ideation. For sample description weighted percentage and means were used. Rao-Scott ${\chi}^2$ test and simple and multiple logistic regression with dummy variables were conducted with use of SAS 9.2. Results: Among general characteristics and health status variables, gender, grade, school level, school achievement, family's economic status, living with parents, subjective health, happiness, stress, and feeling of despair were found to be significantly related to suicidal ideation. Rates of having suicidal ideation were 22.4% in the case of students with less than 5 hours of sleep and 12.9% in students with 8 or more hours of sleep. After controlling general characteristics and subjectively perceived variables, hours of sleep was still significantly related to suicidal ideation. That is, compared to adolescents with 8 hours or more of sleep, those with less than 5 hours of sleep showed significantly higher risk for having suicidal ideation (adjusted odds ratio: 1.20, p<.001). Conclusion: These findings suggest that short sleep has negative effects on psychological health in adolescents. Particularly, less than 5 hours of sleep has harmful effect on adolescents' increased risk for having suicidal ideation.

• Journal of the Korean Academy of Child and Adolescent Psychiatry
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• 제31권4호
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• pp.185-192
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• 2020

Objectives: Our study aimed to analyze the demographic and clinical characteristics of children and adolescents during their first visit to psychiatric outpatient departments for the management of suicidal ideation and behavior, and to compare the changes before and in 2012 or later. Methods: This multicenter study was conducted at five university hospitals in a metropolitan area in South Korea. Medical records of patients aged 6-18 years were retrospectively reviewed from January 2009 to December 2016. Patients were analyzed by classifying them into suicidal and non-suicidal groups based on their visit to the hospital for management of suicidal ideation or suicide attempt and other mental problems, respectively. Results: There were differences in the year of visit, diagnosis, education level, and referral sources between patients in the suicidal and non-suicidal groups. Multiple regression analysis was conducted based on the sex, education level, referral by school, and diagnosis of depression in patients in the suicidal group, which revealed significant association. Conclusion: Suicide-related problems were significantly associated with the sex, education level, referral by school, and a diagnosis of depression in the patients. A well-connected referral system would be necessary for professional mental health management of high-risk children and adolescents.

• Journal of the Korean Academy of Child and Adolescent Psychiatry
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• 제35권2호
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• pp.119-126
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• 2024

Objectives: Non-suicidal self-injury (NSSI) and suicidal behavior, including suicidal ideation (SI) and suicide attempts, are important predictors of suicide in adolescents. This study aimed to investigate the associations between NSSI, SI, NSSI+SI, mental health problems, and family factors in Korean adolescents in Jeju Island, with an emphasis on key findings. Methods: A total of 561 adolescents completed self-report questionnaires regarding demographics, NSSI, SI, suicidal behavior, perceived family functioning, and mental health problems, which were assessed using Center for Epidemiological Studies Depression Scale for Children, Screen for Children Anxiety-Related Disorders (SCARED), and Youth Self-Report (YSR). Data were analyzed using descriptive statistics, one-way analysis of variance, chi-square test, post-hoc analyses, and multivariate logistic regression. Results: In this study, 22.3% of adolescents reported either NSSI or SI, with 5.5% reporting NSSI and 20.7% reporting SI. Combined (NSSI+SI) group showed a significantly higher SCARED score, anxiety/depression, thought problems, attention problem, and rule breaking on YSR than did the SI only group. Higher level of depression and anxiety were significantly associated with NSSI and SI. Female sex and perceived family dissatisfaction were significantly associated factors for SI, but not for NSSI in multivariate logistic regression. Conclusion: This study provides insights into the clinical characteristics and associated factors among adolescents with NSSI, SI, and NSSI+SI in Jeju Island. Identifying these results can inform the development of targeted prevention and intervention strategies to mitigate the negative consequences of these behaviors and contribute to a better understanding of the role of family in this context.