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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...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2013
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3637384/ https://www.ncbi.nlm.nih.gov/pubmed/23638019 http://dx.doi.org/10.1371/journal.pone.0062262 |
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author | Masuda, Naoki Kurahashi, Issei Onari, Hiroko |
author_facet | Masuda, Naoki Kurahashi, Issei Onari, Hiroko |
author_sort | Masuda, Naoki |
collection | PubMed |
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 | Online Article Text |
id | pubmed-3637384 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2013 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-36373842013-05-01 Suicide Ideation of Individuals in Online Social Networks Masuda, Naoki Kurahashi, Issei Onari, Hiroko PLoS One Research Article 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. Public Library of Science 2013-04-26 /pmc/articles/PMC3637384/ /pubmed/23638019 http://dx.doi.org/10.1371/journal.pone.0062262 Text en © 2013 Masuda et al http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited. |
spellingShingle | Research Article Masuda, Naoki Kurahashi, Issei Onari, Hiroko Suicide Ideation of Individuals in Online Social Networks |
title | 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_short | Suicide Ideation of Individuals in Online Social Networks |
title_sort | suicide ideation of individuals in online social networks |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3637384/ https://www.ncbi.nlm.nih.gov/pubmed/23638019 http://dx.doi.org/10.1371/journal.pone.0062262 |
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