Time trends in method-specific suicide rates in Japan, 1990–2011

Yoshioka, Eiji; Hanley, Sharon J.B.; Watanabe, Motonobu; Saijo, Yasuaki

doi:10.1017/s2045796014000675

Cited by 26 publications

(34 citation statements)

References 36 publications

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“…Thus, we reported that the most frequent method of suicide was hanging, which is followed by self-poisoning. These results are also in agreement with international evidence, which, in general, describe a superiority of suicide by hanging [43][44][45] .…”

Section: Discussionsupporting

confidence: 92%

Characteristics of suicide in the City of Nis within the period 2000-2010.

Ljusic¹,

Ravanic²,

Stojanović-Tasić³

et al. 2018

VSP

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Background/Aim. Suicide is a significant public health problem worldwide. Numerous factors contribute to suicide. The aim of this study was to investigate the characteristics of suicide in the city of Niš in the period 2001-2010. Methods. The retrospective study consisted of 608 persons divided into three groups: suicide committers with mental disorders, somatic disorders or without registered disorders. Data on socio-demographic characteristics, previous suicide attempts, methods of suicide and presuicidal syndrome were obtained from the Police Directorate for the city of Niš, Ministry of Internal Affairs, Republic of Serbia and from the Statistical Office of the Republic of Serbia. Results. Persons with mental disorders were the most prevalent group of people who committed suicide (54.3%), followed by persons without registered disorders (31.9%) and with somatic disorders (13.8%). Persons with mental disorders who committed suicide were most often divorced, with high school education, monthly salary and with at least one previous suicide attempt. The hanging was the most frequent method of committing suicide in all investigated groups, followed by self-poisoning using drugs or liquid substances. The presuicidal syndrome was significantly more frequent among persons with mental disorders compared to persons with somatic disorders or without registered disorders others (45.8% vs. 16.7%, and 45.8% vs. 28.4% respectively p < 0.001). Conclusion. Although the persons with mental disorders are in the greatest risk of suicide, they are under medical care. In this regard, the prevention programs should be directed towards persons with severe somatic disorders and to old persons without registered disorders.

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Section: Discussionsupporting

confidence: 92%

Characteristics of suicide in the City of Nis within the period 2000-2010.

Ljusic¹,

Ravanic²,

Stojanović-Tasić³

et al. 2018

VSP

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“…A study in Japan suggested that an increase in overdose suicide in younger generations after 2000 was the result of suboptimal prescription of psychotropic drugs [ 30 ]. Non-psychiatrists, who make up the majority of physicians in Japan, generally have less knowledge of psychotropic drugs than psychiatrists, but often prescribe them.…”

Section: Discussionmentioning

confidence: 99%

Association between the Density of Physicians and Suicide Rates in Japan: Nationwide Ecological Study Using a Spatial Bayesian Model

Kawaguchi¹,

Koike²

2016

PLoS ONE

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BackgroundRegional disparity in suicide rates is a serious problem worldwide. One possible cause is unequal distribution of the health workforce, especially psychiatrists. Research about the association between regional physician numbers and suicide rates is therefore important but studies are rare. The objective of this study was to evaluate the association between physician numbers and suicide rates in Japan, by municipality.MethodsThe study included all the municipalities in Japan (n = 1,896). We estimated smoothed standardized mortality ratios of suicide rates for each municipality and evaluated the association between health workforce and suicide rates using a hierarchical Bayesian model accounting for spatially correlated random effects, a conditional autoregressive model. We assumed a Poisson distribution for the observed number of suicides and set the expected number of suicides as the offset variable. The explanatory variables were numbers of physicians, a binary variable for the presence of psychiatrists, and social covariates.ResultsAfter adjustment for socioeconomic factors, suicide rates in municipalities that had at least one psychiatrist were lower than those in the other municipalities. There was, however, a positive and statistically significant association between the number of physicians and suicide rates.ConclusionsSuicide rates in municipalities that had at least one psychiatrist were lower than those in other municipalities, but the number of physicians was positively and significantly related with suicide rates. To improve the regional disparity in suicide rates, the government should encourage psychiatrists to participate in community-based suicide prevention programs and to settle in municipalities that currently have no psychiatrists. The government and other stakeholders should also construct better networks between psychiatrists and non-psychiatrists to support sharing of information for suicide prevention.

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“…We analysed data for persons aged ≥15 years because suicide is uncommon in children and early adolescence and determining suicidal intent in younger children can be difficult 19. According to previous studies,20 21 age was divided into four groups: 15–24 years, 25–44 years, 45–64 years and 65 years and older. Following preliminary analyses, we decided to combine adolescents and young adults into one age group (15–44 years) because they showed very similar suicide method patterns and changing trends in most countries.…”

Section: Methodsmentioning

confidence: 99%

Sex-specific and age-specific suicide mortality by method in 58 countries between 2000 and 2015

Schwebel

Huang

et al. 2020

Inj Prev

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ObjectiveTo examine recent changes in sex-specific and age-specific suicide mortality by method across countries.MethodsUsing mortality data from the WHO mortality database, we compared sex-specific, age-specific and country-specific suicide mortality by method between 2000 and 2015. We considered seven major suicide methods: poisoning by pesticides, all other poisoning, firearms and explosives, hanging, jumping from height, drowning and other methods. Changes in suicide mortality were quantified using negative binomial models among three age groups (15–44 years, 45–64 years, and 65 years and above) for males and females separately.ResultsSuicide mortality declined substantially for both sexes and all three age groups studied in 37 of the 58 included countries between 2000 and 2015. Males consistently had much higher suicide mortality rates than females in all 58 countries. Hanging was the most common suicide method in the majority of 58 countries. Sex-specific suicide mortality varied across 58 countries significantly for all three age groups. The spectrum of suicide method generally remained stable for 28 of 58 included countries; notable changes occurred in the other 30 countries, including especially Colombia, Finland and Trinidad and Tobago.ConclusionLikely as a result of prevention efforts as well as sociodemographic changes, suicide mortality decreased substantially in 37 of the included 58 countries between 2000 and 2015. Further actions are needed to explore specific drivers of the recent changes (particularly for increases in eight countries), to understand substantial disparities in suicide rates across countries, and to develop interventions to reduce suicide rates globally.

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Time trends in method-specific suicide rates in Japan, 1990–2011

Cited by 26 publications

References 36 publications

Characteristics of suicide in the City of Nis within the period 2000-2010.

Characteristics of suicide in the City of Nis within the period 2000-2010.

Association between the Density of Physicians and Suicide Rates in Japan: Nationwide Ecological Study Using a Spatial Bayesian Model

Sex-specific and age-specific suicide mortality by method in 58 countries between 2000 and 2015

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