Journal of Nippon Medical School
Online ISSN : 1347-3409
Print ISSN : 1345-4676
ISSN-L : 1345-4676
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Changing Characteristics of Young Severe Suicide Attempters Admitted to an Emergency Room in Tokyo, Japan
Ryuichiro NarishigeYasushi OtakaAmane Tateno
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2024 年 91 巻 5 号 p. 488-494

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Background: 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. Methods: 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. Results: 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. Conclusions: 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.

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