Department of Neuropsychiatry, Nippon Medical School.
J Nippon Med Sch. 2024;91(5):488-494. doi: 10.1272/jnms.JNMS.2024_91-514.
The decreasing trend in the number of young suicides in Japan changed to a flat/increasing trend in 2017. To identify how this change was reflected in young suicide attempters, we investigated changes in the characteristics of young suicide attempters admitted to our emergency room.
The subjects were suicide attempters younger than 30 years admitted to the Critical Care Medical Center of Nippon Medical School Hospital between January 1, 2010, and December 31, 2021. The means of suicide attempt, sociodemographic data, psychiatric diagnoses, and causes and motives of suicide attempts were retrospectively examined from medical records. We compared post-2017 to pre-2017 suicide attempts and performed a statistical analysis.
The proportion of suicide attempters younger than 30 years was 27.9% (143 of 513) before 2017 and 38.0% (132 of 347) after 2017, a significant increase. From 2017 to 2021, there was a significant increase in the number of female suicide attempters younger than 30 years and in the percentage of drug overdoses.
The proportion of suicide attempters younger than 30 years was significantly higher after the start of 2017 than before 2017, possibly because of an increase in drug overdoses.
日本年轻人自杀人数呈下降趋势，但在 2017 年转为持平/上升趋势。为了确定这种变化在年轻自杀未遂者身上是如何体现的，我们调查了入住我院急救室的年轻自杀未遂者特征的变化。
本研究的对象为 2010 年 1 月 1 日至 2021 年 12 月 31 日期间入住日本医科大学附属医院急救医疗中心、年龄小于 30 岁的自杀未遂者。我们从病历中回顾了自杀未遂的方式、社会人口学数据、精神科诊断以及自杀未遂的原因和动机。我们比较了 2017 年后和 2017 年前的自杀未遂事件，并进行了统计分析。
2017 年前，年龄小于 30 岁的自杀未遂者比例为 27.9%（143/513），2017 年后为 38.0%（132/347），显著增加。从 2017 年到 2021 年，30 岁以下女性自杀未遂者人数和药物过量自杀未遂者的比例显著增加。
2017 年开始，年龄小于 30 岁的自杀未遂者比例显著高于 2017 年之前，这可能是由于药物过量自杀未遂的增加所致。
