Suicide ideation of individuals in online social networks.

Suicide explains the largest number of death tolls among Japanese adolescents in their twenties and thirties. Suicide is also a major cause of death for adolescents in many other countries. Although social isolation has been implicated to influence the tendency to suicidal behavior, the impact of so...

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Autores principales:	Naoki Masuda, Issei Kurahashi, Hiroko Onari
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2013
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/8813e7299dda4426b1345a4360f05698
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spelling	oai:doaj.org-article:8813e7299dda4426b1345a4360f056982021-11-18T07:47:44ZSuicide ideation of individuals in online social networks.1932-620310.1371/journal.pone.0062262https://doaj.org/article/8813e7299dda4426b1345a4360f056982013-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23638019/?tool=EBIhttps://doaj.org/toc/1932-6203Suicide explains the largest number of death tolls among Japanese adolescents in their twenties and thirties. Suicide is also a major cause of death for adolescents in many other countries. Although social isolation has been implicated to influence the tendency to suicidal behavior, the impact of social isolation on suicide in the context of explicit social networks of individuals is scarcely explored. To address this question, we examined a large data set obtained from a social networking service dominant in Japan. The social network is composed of a set of friendship ties between pairs of users created by mutual endorsement. We carried out the logistic regression to identify users' characteristics, both related and unrelated to social networks, which contribute to suicide ideation. We defined suicide ideation of a user as the membership to at least one active user-defined community related to suicide. We found that the number of communities to which a user belongs to, the intransitivity (i.e., paucity of triangles including the user), and the fraction of suicidal neighbors in the social network, contributed the most to suicide ideation in this order. Other characteristics including the age and gender contributed little to suicide ideation. We also found qualitatively the same results for depressive symptoms.Naoki MasudaIssei KurahashiHiroko OnariPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 8, Iss 4, p e62262 (2013)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Naoki Masuda Issei Kurahashi Hiroko Onari Suicide ideation of individuals in online social networks.
description	Suicide explains the largest number of death tolls among Japanese adolescents in their twenties and thirties. Suicide is also a major cause of death for adolescents in many other countries. Although social isolation has been implicated to influence the tendency to suicidal behavior, the impact of social isolation on suicide in the context of explicit social networks of individuals is scarcely explored. To address this question, we examined a large data set obtained from a social networking service dominant in Japan. The social network is composed of a set of friendship ties between pairs of users created by mutual endorsement. We carried out the logistic regression to identify users' characteristics, both related and unrelated to social networks, which contribute to suicide ideation. We defined suicide ideation of a user as the membership to at least one active user-defined community related to suicide. We found that the number of communities to which a user belongs to, the intransitivity (i.e., paucity of triangles including the user), and the fraction of suicidal neighbors in the social network, contributed the most to suicide ideation in this order. Other characteristics including the age and gender contributed little to suicide ideation. We also found qualitatively the same results for depressive symptoms.
format	article
author	Naoki Masuda Issei Kurahashi Hiroko Onari
author_facet	Naoki Masuda Issei Kurahashi Hiroko Onari
author_sort	Naoki Masuda
title	Suicide ideation of individuals in online social networks.
title_short	Suicide ideation of individuals in online social networks.
title_full	Suicide ideation of individuals in online social networks.
title_fullStr	Suicide ideation of individuals in online social networks.
title_full_unstemmed	Suicide ideation of individuals in online social networks.
title_sort	suicide ideation of individuals in online social networks.
publisher	Public Library of Science (PLoS)
publishDate	2013
url	https://doaj.org/article/8813e7299dda4426b1345a4360f05698
work_keys_str_mv	AT naokimasuda suicideideationofindividualsinonlinesocialnetworks AT isseikurahashi suicideideationofindividualsinonlinesocialnetworks AT hirokoonari suicideideationofindividualsinonlinesocialnetworks
_version_	1718422922729619456

Suicide ideation of individuals in online social networks.

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