Department of Psychiatry, Inha University Hospital, Incheon, Republic of Korea; Department of Psychiatry and Behavioral Science, Seoul National University College of Medicine, Seoul, Republic of Korea.
Department of Psychiatry, University of California, San Francisco, United States.
J Affect Disord. 2018 Aug 1;235:184-190. doi: 10.1016/j.jad.2018.04.001. Epub 2018 Apr 4.
It is essential to understand the latent structure of the population of suicide attempters for effective suicide prevention. The aim of this study was to identify subgroups among Korean suicide attempters in terms of the details of the suicide attempt.
A total of 888 people who attempted suicide and were subsequently treated in the emergency rooms of 17 medical centers between May and November of 2013 were included in the analysis. The variables assessed included demographic characteristics, clinical information, and details of the suicide attempt assessed by the Suicide Intent Scale (SIS) and Columbia-Suicide Severity Rating Scale (C-SSRS). Cluster analysis was performed using the Ward method.
Of the participants, 85.4% (n = 758) fell into a cluster characterized by less planning, low lethality methods, and ambivalence towards death ("impulsive"). The other cluster (n = 130) involved a more severe and well-planned attempt, used highly lethal methods, and took more precautions to avoid being interrupted ("planned"). The first cluster was dominated by women, while the second cluster was associated more with men, older age, and physical illness.
We only included participants who visited the emergency department after their suicide attempt and had no missing values for SIS or C-SSRS.
Cluster analysis extracted two distinct subgroups of Korean suicide attempters showing different patterns of suicidal behaviors. Understanding that a significant portion of suicide attempts occur impulsively calls for new prevention strategies tailored to differing subgroup profiles.
了解自杀未遂者人群的潜在结构对于有效的自杀预防至关重要。本研究旨在根据自杀未遂的详细情况，确定韩国自杀未遂者的亚组。
共纳入 2013 年 5 月至 11 月期间在 17 家医疗中心急诊室接受治疗的 888 名自杀未遂者。评估的变量包括人口统计学特征、临床信息以及自杀意图量表（SIS）和哥伦比亚自杀严重程度评定量表（C-SSRS）评估的自杀未遂细节。采用 Ward 法进行聚类分析。
参与者中，85.4%（n=758）归入一个特征为计划较少、低致命方法、对死亡犹豫不决（“冲动”）的亚组。另一个亚组（n=130）涉及更严重和精心计划的尝试，使用高度致命的方法，并采取更多预防措施以避免被打断（“计划”）。第一个亚组以女性为主，而第二个亚组则与男性、年龄较大和身体疾病相关。
我们仅纳入了在自杀未遂后前往急诊室就诊且 SIS 或 C-SSRS 无缺失值的参与者。
聚类分析提取了韩国自杀未遂者的两个不同亚组，表现出不同的自杀行为模式。了解到相当一部分自杀未遂是冲动发生的，这需要针对不同亚组特征制定新的预防策略。
