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A Statistical Analysis of Suicides in Japan During the 30 Years from 1950 to 1979

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Fortschritte der Rechtsmedizin
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Summary

In this paper we statistically examined the suicides in Japan during the 30 years from 1950 to 1979. The results can be summarized as follows: (1) The suicide rate (average, 18.6 ± 3.4 per 100 000 persons) is high compared with the international average. (2) There were two remarkable peaks in the suicide rate: one in the second half of the 1950s and the other after 1975. The former peak was from a prevailing trend of young men taking poison, and the second peak seemed to have been caused by suicide in adult males. (3) Suicide rate increased with age, except for the twenties age group. Since 1975, however, the difference between age groups has tended to become smaller. (4) As for the main suicidal means, hanging ranks first, followed by taking poisons, drowning, gas, and jumping from height. The “industrial type of suicide,” such as poisoning and jumping from height, showed much more remarkable changes than the “primitive type of suicide,” such as hanging and drowning. Legal regulations against toxic substances succeeded in greatly decreasing suicides by taking poisons. Suicides by gas and jumping from height are still increasing, suggesting limitations or difficulties in enforcing adequate and effective regulations. (5) The average total sex ratio of suicide was 72.0 ± 5.6 (females per 100 males). The highest sex ratio was seen in “drowning” (209.3 ± 13.0) and the lowest in “fire- arms and cutlery”) (31.3 ± 4.3).

Zusammenfassung

Es wurden statistische Untersuchungen von Suiziden in Japan über 30 Jahre von 1950 bis 1979 durchgeführt. Die Suizidrate in Japan (durchschnittlich 18, 6± 3,4 auf 100 000 Einwohner) war im internationalen Vergleich ziemlich hoch. Bei Suizidraten gab es zwei Gipfel: einer in der letzten Hälfte der 1950er Jahre, der aus Suiziden jugendlicher Männer durch Vergiften gebildet wurde; der zweite nach 1975 ist auf Suizide erwachsener Männer zurückzuführen. Die Suizidrate stieg mit dem Alter mit Ausnahme der 20jährigen. Nach 1975 verringerten sich die Unterschiede zwischen den verschiedenen Altersgruppen. Die häufigste Methode war Erhängen, gefolgt von Vergiften, Ertrinken, Gasvergiftung und Stürzen aus der Höhe. Die „industriellen Suizid- typen“ wie Vergiften und Stürzen aus der Höhe zeigten stärkere Wechsel als die „primitiven Suizidtypen“ wie Erhängen und Ertrinken. Gesetzliche Vorschriften gegen giftige Substanzen haben einen guten Erfolg bei der Verminderung der suizidalen Vergiftungsfälle gehabt. Der durchschnittliche Anteil der Suizide von Frauen (pro 100 Männer) war 72,0-5,6, der höchste fand sich beim Ertrinken (209,3 ± 13,0), der niedrigste beim Erschießen und Erstechen (31,3 ± 4,3).

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© 1983 Springer-Verlag Berlin Heidelberg

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Kamiyama, S., Utsugi, S., Yoritaka, M. (1983). A Statistical Analysis of Suicides in Japan During the 30 Years from 1950 to 1979. In: Barz, J., Bösche, J., Joachim, H., Käppner, R., Mattern, R., Frohberg, H. (eds) Fortschritte der Rechtsmedizin. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-68930-7_45

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  • DOI: https://doi.org/10.1007/978-3-642-68930-7_45

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-642-68931-4

  • Online ISBN: 978-3-642-68930-7

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