Impact of loneliness on suicidal ideation during the COVID-19 pandemic: findings from a cross-sectional online survey in Japan

Objectives We aim to reveal how loneliness relates to suicidal ideation following the onset of the COVID-19 pandemic.Design Cross-sectional online survey.Setting Community cohort study in Japan.Participants The second wave of a large web-based survey, Japan COVID-19 and Society Internet Survey, was...

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Main Authors: Takahiro Tabuchi, Ryo Okubo, Hirokazu Tachikawa, Midori Matsushima, Haruhiko Midorikawa, Miyuki Aiba
Format: Article
Language:English
Published: BMJ Publishing Group 2023-05-01
Series:BMJ Open
Online Access:https://bmjopen.bmj.com/content/13/5/e063363.full
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author Takahiro Tabuchi
Ryo Okubo
Hirokazu Tachikawa
Midori Matsushima
Haruhiko Midorikawa
Miyuki Aiba
author_facet Takahiro Tabuchi
Ryo Okubo
Hirokazu Tachikawa
Midori Matsushima
Haruhiko Midorikawa
Miyuki Aiba
author_sort Takahiro Tabuchi
collection DOAJ
description Objectives We aim to reveal how loneliness relates to suicidal ideation following the onset of the COVID-19 pandemic.Design Cross-sectional online survey.Setting Community cohort study in Japan.Participants The second wave of a large web-based survey, Japan COVID-19 and Society Internet Survey, was conducted in February 2021, and we analysed the data of 6436 men and 5380 women who were aged 20–59 years.Main outcome measures The prevalence ratios (PRs) of suicidal ideation due to loneliness, depression, social isolation and decline in income during the pandemic and other sociodemographic and economic information were adjusted in the analysis.Statistical methods Estimations were conducted by separating a male and female sample. The survey weight (inverse probability weighting) was applied for analyses, and a Poisson regression model was used with all the potential confounders adjected.Results Overall, 15.1% of male and 16.3% of female participants were found to have had suicidal ideation during the COVID-19 pandemic. Among them, 23% of male and 20% of female participants experienced suicidal ideation for the first time. The results of the Poisson regression suggested that those who were feeling lonely had higher PRs for suicidal ideation (4.83 for men (95% CI, 3.87 to 6.16) and 6.19 for women (95% CI, 4.77 to 8.45)). The relationship between loneliness and suicidal ideation remained robust even after adjusting for depression, although there were declines in PRs. Additionally, the results showed that those who were lonely, and continued to feel lonely during the pandemic, had the highest PRs of suicidal ideation.Conclusion Loneliness had both direct and indirect effects on suicidal ideation mediated through depression. Those who felt lonelier during the pandemic had the highest risk of suicidal ideation. It is necessary to adopt national measures focused on providing psychological support to people who feel lonely to prevent them from taking their own lives.
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spelling doaj-art-7372e94137324df0876de7927ed5db202025-02-02T14:00:10ZengBMJ Publishing GroupBMJ Open2044-60552023-05-0113510.1136/bmjopen-2022-063363Impact of loneliness on suicidal ideation during the COVID-19 pandemic: findings from a cross-sectional online survey in JapanTakahiro Tabuchi0Ryo Okubo1Hirokazu Tachikawa2Midori Matsushima3Haruhiko Midorikawa4Miyuki Aiba54 Center for Cancer Control and Statistics, Osaka International Cancer Institute, Osaka, JapanDepartment of Neuropsychiatry, National Hospital Organization Obihiro Hospital, Obihiro, Hokkaido, Japan2 Department of Disaster and Community Psychiatry, Institute of Medicine, University of Tsukuba, Tsukuba, JapanFaculty of Humanities and Social Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan3 Department of Psychiatry, University of Tsukuba Hospital, Tsukuba, JapanFaculty of Human Science, Toyo Gakuen University, Bunkyo-ku, Tokyo, JapanObjectives We aim to reveal how loneliness relates to suicidal ideation following the onset of the COVID-19 pandemic.Design Cross-sectional online survey.Setting Community cohort study in Japan.Participants The second wave of a large web-based survey, Japan COVID-19 and Society Internet Survey, was conducted in February 2021, and we analysed the data of 6436 men and 5380 women who were aged 20–59 years.Main outcome measures The prevalence ratios (PRs) of suicidal ideation due to loneliness, depression, social isolation and decline in income during the pandemic and other sociodemographic and economic information were adjusted in the analysis.Statistical methods Estimations were conducted by separating a male and female sample. The survey weight (inverse probability weighting) was applied for analyses, and a Poisson regression model was used with all the potential confounders adjected.Results Overall, 15.1% of male and 16.3% of female participants were found to have had suicidal ideation during the COVID-19 pandemic. Among them, 23% of male and 20% of female participants experienced suicidal ideation for the first time. The results of the Poisson regression suggested that those who were feeling lonely had higher PRs for suicidal ideation (4.83 for men (95% CI, 3.87 to 6.16) and 6.19 for women (95% CI, 4.77 to 8.45)). The relationship between loneliness and suicidal ideation remained robust even after adjusting for depression, although there were declines in PRs. Additionally, the results showed that those who were lonely, and continued to feel lonely during the pandemic, had the highest PRs of suicidal ideation.Conclusion Loneliness had both direct and indirect effects on suicidal ideation mediated through depression. Those who felt lonelier during the pandemic had the highest risk of suicidal ideation. It is necessary to adopt national measures focused on providing psychological support to people who feel lonely to prevent them from taking their own lives.https://bmjopen.bmj.com/content/13/5/e063363.full
spellingShingle Takahiro Tabuchi
Ryo Okubo
Hirokazu Tachikawa
Midori Matsushima
Haruhiko Midorikawa
Miyuki Aiba
Impact of loneliness on suicidal ideation during the COVID-19 pandemic: findings from a cross-sectional online survey in Japan
BMJ Open
title Impact of loneliness on suicidal ideation during the COVID-19 pandemic: findings from a cross-sectional online survey in Japan
title_full Impact of loneliness on suicidal ideation during the COVID-19 pandemic: findings from a cross-sectional online survey in Japan
title_fullStr Impact of loneliness on suicidal ideation during the COVID-19 pandemic: findings from a cross-sectional online survey in Japan
title_full_unstemmed Impact of loneliness on suicidal ideation during the COVID-19 pandemic: findings from a cross-sectional online survey in Japan
title_short Impact of loneliness on suicidal ideation during the COVID-19 pandemic: findings from a cross-sectional online survey in Japan
title_sort impact of loneliness on suicidal ideation during the covid 19 pandemic findings from a cross sectional online survey in japan
url https://bmjopen.bmj.com/content/13/5/e063363.full
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