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Sleep loss suicidal ideation: the role of trait extraversion

Background: It is known that sleep disturbance is associated with increased suicidal thinking. Moreover, completed suicides, when adjusted for the proportion of the populace that is awake at a given time, are more probable during the late night/early morning hours. Despite these concerns, no studies...

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Autores principales: Killgore, William D. S., Grandner, Michael A., Tubbs, Andrew S., Fernandez, Fabian-Xosé, Doty, Tracy Jill, Capaldi II, Vincent F., Dailey, Natalie S.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9630630/
https://www.ncbi.nlm.nih.gov/pubmed/36338878
http://dx.doi.org/10.3389/fnbeh.2022.886836
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author Killgore, William D. S.
Grandner, Michael A.
Tubbs, Andrew S.
Fernandez, Fabian-Xosé
Doty, Tracy Jill
Capaldi II, Vincent F.
Dailey, Natalie S.
author_facet Killgore, William D. S.
Grandner, Michael A.
Tubbs, Andrew S.
Fernandez, Fabian-Xosé
Doty, Tracy Jill
Capaldi II, Vincent F.
Dailey, Natalie S.
author_sort Killgore, William D. S.
collection PubMed
description Background: It is known that sleep disturbance is associated with increased suicidal thinking. Moreover, completed suicides, when adjusted for the proportion of the populace that is awake at a given time, are more probable during the late night/early morning hours. Despite these concerns, no studies have examined the role of trait-like individual differences in vulnerability to suicidal ideation during sleep deprivation or insomnia. In two separate studies, we examined whether the trait of extraversion is predictive of changes in suicidal thinking following two nights of sleep deprivation and among individuals meeting the criteria for insomnia. Methods: Study 1: Twenty-five healthy military personnel (20 males), ages 20–35 completed the NEO-PI-R Extraversion scale and the Suicidal Ideation (SUI) scale of the Personality Assessment Inventory (PAI). Participants completed 77 h of continuous sleep deprivation. After 56 h of sleep deprivation, participants completed the SUI scale a second time. We predicted a change in SUI scores from baseline extraversion. Study 2: 2,061 adults aged 18–79 (900 males) were divided into two groups based on the clinical threshold (≥ 10) on the Insomnia Severity Index (ISI) and completed measures of extraversion and depression, including the suicide item of the Patient Health Questionnaire-9 (PHQ9). Results: Study 1: After controlling for the caffeine group and changes in PAI Depression, Extraversion scores were used to predict changes in SUI scores using stepwise multiple linear regression. Higher Extraversion was significantly associated with increased non-clinical suicidal ideation following sleep loss, β = 0.463, partial r = 0.512, p = 0.013. Study 2: After controlling for depression, the effect of insomnia on suicidal ideation was moderated by trait extraversion (p < 0.0001). Overall, the presence or absence of insomnia had little effect on individuals low in trait extraversion (i.e., introverts), but insomnia was associated with significantly higher suicidal ideation among high trait extraverted individuals. Conclusions: Higher trait extraversion was associated with increased vulnerability to suicidal ideation between rested baseline and total sleep deprivation and was associated with greater suicidal ideation among those meeting criteria for clinically severe insomnia. These findings point to a potential trait-like vulnerability factor that may further our understanding of sleep disruption in the phenomenology of suicide.
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spelling pubmed-96306302022-11-04 Sleep loss suicidal ideation: the role of trait extraversion Killgore, William D. S. Grandner, Michael A. Tubbs, Andrew S. Fernandez, Fabian-Xosé Doty, Tracy Jill Capaldi II, Vincent F. Dailey, Natalie S. Front Behav Neurosci Behavioral Neuroscience Background: It is known that sleep disturbance is associated with increased suicidal thinking. Moreover, completed suicides, when adjusted for the proportion of the populace that is awake at a given time, are more probable during the late night/early morning hours. Despite these concerns, no studies have examined the role of trait-like individual differences in vulnerability to suicidal ideation during sleep deprivation or insomnia. In two separate studies, we examined whether the trait of extraversion is predictive of changes in suicidal thinking following two nights of sleep deprivation and among individuals meeting the criteria for insomnia. Methods: Study 1: Twenty-five healthy military personnel (20 males), ages 20–35 completed the NEO-PI-R Extraversion scale and the Suicidal Ideation (SUI) scale of the Personality Assessment Inventory (PAI). Participants completed 77 h of continuous sleep deprivation. After 56 h of sleep deprivation, participants completed the SUI scale a second time. We predicted a change in SUI scores from baseline extraversion. Study 2: 2,061 adults aged 18–79 (900 males) were divided into two groups based on the clinical threshold (≥ 10) on the Insomnia Severity Index (ISI) and completed measures of extraversion and depression, including the suicide item of the Patient Health Questionnaire-9 (PHQ9). Results: Study 1: After controlling for the caffeine group and changes in PAI Depression, Extraversion scores were used to predict changes in SUI scores using stepwise multiple linear regression. Higher Extraversion was significantly associated with increased non-clinical suicidal ideation following sleep loss, β = 0.463, partial r = 0.512, p = 0.013. Study 2: After controlling for depression, the effect of insomnia on suicidal ideation was moderated by trait extraversion (p < 0.0001). Overall, the presence or absence of insomnia had little effect on individuals low in trait extraversion (i.e., introverts), but insomnia was associated with significantly higher suicidal ideation among high trait extraverted individuals. Conclusions: Higher trait extraversion was associated with increased vulnerability to suicidal ideation between rested baseline and total sleep deprivation and was associated with greater suicidal ideation among those meeting criteria for clinically severe insomnia. These findings point to a potential trait-like vulnerability factor that may further our understanding of sleep disruption in the phenomenology of suicide. Frontiers Media S.A. 2022-10-20 /pmc/articles/PMC9630630/ /pubmed/36338878 http://dx.doi.org/10.3389/fnbeh.2022.886836 Text en Copyright © 2022 Killgore, Grandner, Tubbs, Fernandez, Doty, Capaldi, and Dailey. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Behavioral Neuroscience
Killgore, William D. S.
Grandner, Michael A.
Tubbs, Andrew S.
Fernandez, Fabian-Xosé
Doty, Tracy Jill
Capaldi II, Vincent F.
Dailey, Natalie S.
Sleep loss suicidal ideation: the role of trait extraversion
title Sleep loss suicidal ideation: the role of trait extraversion
title_full Sleep loss suicidal ideation: the role of trait extraversion
title_fullStr Sleep loss suicidal ideation: the role of trait extraversion
title_full_unstemmed Sleep loss suicidal ideation: the role of trait extraversion
title_short Sleep loss suicidal ideation: the role of trait extraversion
title_sort sleep loss suicidal ideation: the role of trait extraversion
topic Behavioral Neuroscience
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9630630/
https://www.ncbi.nlm.nih.gov/pubmed/36338878
http://dx.doi.org/10.3389/fnbeh.2022.886836
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