Abstract：
Extended suicide, a specific type of homicide-suicide event, has severe social consequences yet remains lacking systematic research. This retrospective study investigated 51 cases of extended suicide involving mental disorders in central China with aim of better understanding risk factors for such events and guiding prevention strategies. Over an 8-year period from 2015 to 2022, cases were collected from forensic institutions, and demographic characteristics, case details, and psychiatric data were recorded. The 51 incidents involved 51 perpetrators and 79 victims, with more female perpetrators (58.8%) and more female victims (54.4%). The average age of the perpetrators was 36.1, and most were married (88.2%). Almost all of the victims were family members of the perpetrator, like the most numerous children (64.6%), followed by spouses (24.1%). The most common homicide mode of death was mechanical asphyxia (38.0%), followed by sharp devices (36.7%) and drug poisoning (16.5%). Depressive disorders (76.5%) were the most common diagnosis of mental disorder for perpetrators. The study analyzed the unique characteristics of extended suicide to enrich such data. These findings help strengthen the screening and identification of potential perpetrators and victims to prevent such cases from occurring.
摘要：
长期自杀,特定类型的杀人自杀事件,具有严重的社会后果，但仍然缺乏系统的研究。这项回顾性研究调查了中国中部地区51例涉及精神障碍的长期自杀病例，目的是更好地了解此类事件的危险因素并指导预防策略。从2015年到2022年的8年期间，从法医机构收集了案件，和人口特征，案例详细信息,并记录精神病数据.这51起事件涉及51名肇事者和79名受害者,更多的女性犯罪者（58.8％）和更多的女性受害者（54.4％）。肇事者的平均年龄为36.1岁，大多数已婚（88.2％）。几乎所有受害者都是肇事者的家人，像最多的孩子（64.6％），其次是配偶(24.1%)。最常见的杀人死亡方式是机械性窒息(38.0%),其次是尖锐装置(36.7%)和药物中毒(16.5%)。抑郁症（76.5％）是肇事者最常见的精神障碍诊断。该研究分析了长期自杀的独特特征，以丰富此类数据。这些发现有助于加强对潜在肇事者和受害者的筛查和识别，以防止此类案件发生。
