The role of seasonality and photoperiod on the lethality of suicide attempts: A case-control study

Andrea Aguglia, Gianluca Serafini, Paola Solano, Gabriele Giacomini, Claudia Conigliaro, Virginio Salvi, Claudio Mencacci, Miroslav Romano, Eugenio Aguglia, Mario Amore

Research output: Contribution to journalArticle

Abstract

Background: The risk factors related to suicidal behaviors are complex and not yet fully known. Several studies underline how suicide results from the combination of psycho-social, biological, cultural, and environmental factors. The aim of this study was to investigate the potential role of seasonality and photoperiod on high-lethality suicide attempts (HLSA) compared with low-lethality suicide attempts (LLSA) in a sample of psychiatric inpatients. Methods: After attempting suicide, subjects were admitted in the emergency/psychiatric ward of the IRCCS Ospedale Policlinico San Martino from 1st August 2013 to 31st July 2018. Socio-demographic and clinical characteristics were collected. Results: The sample consisted of four hundred thirty-two individuals admitted for suicide attempt. One hundred thirty-three subjects (30.8%) of the sample committed a HLSA. The HLSA group peaked in the months with a higher sunlight exposure (June and July). Bivariate correlation analyses between seasonality/photoperiod in the whole sample and HLSA were positively associated with summer and highest solar intensity period. Limitations: Data were limited to a single hospital, patients’ seasonal environment, meteorological variables and psychological factors. In addition, the presence of acute life-events fostering the suicidal crisis has not been investigated. Conclusions: The current study provides a novel perspective on the questions surrounding the impact of seasonality and daylight exposure on lethality of suicide attempts. further studies are needed to provide deeper understandings on the delicate molecular network that links suicide behaviors, seasonality and daylight in order to develop more effective prevention and treatment strategies in the future.

Original languageEnglish
Pages (from-to)895-901
Number of pages7
JournalJournal of Affective Disorders
Volume246
DOIs
Publication statusPublished - Mar 1 2019

Fingerprint

Photoperiod
Suicide
Case-Control Studies
Psychiatry
Meteorological Concepts
Foster Home Care
Sunlight
Hospital Emergency Service
Inpatients
Demography
Psychology

Keywords

  • Lethality
  • Seasonality
  • Suicide
  • Sunlight
  • Violence

ASJC Scopus subject areas

  • Clinical Psychology
  • Psychiatry and Mental health

Cite this

The role of seasonality and photoperiod on the lethality of suicide attempts : A case-control study. / Aguglia, Andrea; Serafini, Gianluca; Solano, Paola; Giacomini, Gabriele; Conigliaro, Claudia; Salvi, Virginio; Mencacci, Claudio; Romano, Miroslav; Aguglia, Eugenio; Amore, Mario.

In: Journal of Affective Disorders, Vol. 246, 01.03.2019, p. 895-901.

Research output: Contribution to journalArticle

Aguglia, Andrea ; Serafini, Gianluca ; Solano, Paola ; Giacomini, Gabriele ; Conigliaro, Claudia ; Salvi, Virginio ; Mencacci, Claudio ; Romano, Miroslav ; Aguglia, Eugenio ; Amore, Mario. / The role of seasonality and photoperiod on the lethality of suicide attempts : A case-control study. In: Journal of Affective Disorders. 2019 ; Vol. 246. pp. 895-901.
@article{79ff4f691b6141fe96ef281dc9527a27,
title = "The role of seasonality and photoperiod on the lethality of suicide attempts: A case-control study",
abstract = "Background: The risk factors related to suicidal behaviors are complex and not yet fully known. Several studies underline how suicide results from the combination of psycho-social, biological, cultural, and environmental factors. The aim of this study was to investigate the potential role of seasonality and photoperiod on high-lethality suicide attempts (HLSA) compared with low-lethality suicide attempts (LLSA) in a sample of psychiatric inpatients. Methods: After attempting suicide, subjects were admitted in the emergency/psychiatric ward of the IRCCS Ospedale Policlinico San Martino from 1st August 2013 to 31st July 2018. Socio-demographic and clinical characteristics were collected. Results: The sample consisted of four hundred thirty-two individuals admitted for suicide attempt. One hundred thirty-three subjects (30.8{\%}) of the sample committed a HLSA. The HLSA group peaked in the months with a higher sunlight exposure (June and July). Bivariate correlation analyses between seasonality/photoperiod in the whole sample and HLSA were positively associated with summer and highest solar intensity period. Limitations: Data were limited to a single hospital, patients’ seasonal environment, meteorological variables and psychological factors. In addition, the presence of acute life-events fostering the suicidal crisis has not been investigated. Conclusions: The current study provides a novel perspective on the questions surrounding the impact of seasonality and daylight exposure on lethality of suicide attempts. further studies are needed to provide deeper understandings on the delicate molecular network that links suicide behaviors, seasonality and daylight in order to develop more effective prevention and treatment strategies in the future.",
keywords = "Lethality, Seasonality, Suicide, Sunlight, Violence",
author = "Andrea Aguglia and Gianluca Serafini and Paola Solano and Gabriele Giacomini and Claudia Conigliaro and Virginio Salvi and Claudio Mencacci and Miroslav Romano and Eugenio Aguglia and Mario Amore",
year = "2019",
month = "3",
day = "1",
doi = "10.1016/j.jad.2018.12.094",
language = "English",
volume = "246",
pages = "895--901",
journal = "Journal of Affective Disorders",
issn = "0165-0327",
publisher = "Elsevier",

}

TY - JOUR

T1 - The role of seasonality and photoperiod on the lethality of suicide attempts

T2 - A case-control study

AU - Aguglia, Andrea

AU - Serafini, Gianluca

AU - Solano, Paola

AU - Giacomini, Gabriele

AU - Conigliaro, Claudia

AU - Salvi, Virginio

AU - Mencacci, Claudio

AU - Romano, Miroslav

AU - Aguglia, Eugenio

AU - Amore, Mario

PY - 2019/3/1

Y1 - 2019/3/1

N2 - Background: The risk factors related to suicidal behaviors are complex and not yet fully known. Several studies underline how suicide results from the combination of psycho-social, biological, cultural, and environmental factors. The aim of this study was to investigate the potential role of seasonality and photoperiod on high-lethality suicide attempts (HLSA) compared with low-lethality suicide attempts (LLSA) in a sample of psychiatric inpatients. Methods: After attempting suicide, subjects were admitted in the emergency/psychiatric ward of the IRCCS Ospedale Policlinico San Martino from 1st August 2013 to 31st July 2018. Socio-demographic and clinical characteristics were collected. Results: The sample consisted of four hundred thirty-two individuals admitted for suicide attempt. One hundred thirty-three subjects (30.8%) of the sample committed a HLSA. The HLSA group peaked in the months with a higher sunlight exposure (June and July). Bivariate correlation analyses between seasonality/photoperiod in the whole sample and HLSA were positively associated with summer and highest solar intensity period. Limitations: Data were limited to a single hospital, patients’ seasonal environment, meteorological variables and psychological factors. In addition, the presence of acute life-events fostering the suicidal crisis has not been investigated. Conclusions: The current study provides a novel perspective on the questions surrounding the impact of seasonality and daylight exposure on lethality of suicide attempts. further studies are needed to provide deeper understandings on the delicate molecular network that links suicide behaviors, seasonality and daylight in order to develop more effective prevention and treatment strategies in the future.

AB - Background: The risk factors related to suicidal behaviors are complex and not yet fully known. Several studies underline how suicide results from the combination of psycho-social, biological, cultural, and environmental factors. The aim of this study was to investigate the potential role of seasonality and photoperiod on high-lethality suicide attempts (HLSA) compared with low-lethality suicide attempts (LLSA) in a sample of psychiatric inpatients. Methods: After attempting suicide, subjects were admitted in the emergency/psychiatric ward of the IRCCS Ospedale Policlinico San Martino from 1st August 2013 to 31st July 2018. Socio-demographic and clinical characteristics were collected. Results: The sample consisted of four hundred thirty-two individuals admitted for suicide attempt. One hundred thirty-three subjects (30.8%) of the sample committed a HLSA. The HLSA group peaked in the months with a higher sunlight exposure (June and July). Bivariate correlation analyses between seasonality/photoperiod in the whole sample and HLSA were positively associated with summer and highest solar intensity period. Limitations: Data were limited to a single hospital, patients’ seasonal environment, meteorological variables and psychological factors. In addition, the presence of acute life-events fostering the suicidal crisis has not been investigated. Conclusions: The current study provides a novel perspective on the questions surrounding the impact of seasonality and daylight exposure on lethality of suicide attempts. further studies are needed to provide deeper understandings on the delicate molecular network that links suicide behaviors, seasonality and daylight in order to develop more effective prevention and treatment strategies in the future.

KW - Lethality

KW - Seasonality

KW - Suicide

KW - Sunlight

KW - Violence

UR - http://www.scopus.com/inward/record.url?scp=85059862147&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85059862147&partnerID=8YFLogxK

U2 - 10.1016/j.jad.2018.12.094

DO - 10.1016/j.jad.2018.12.094

M3 - Article

AN - SCOPUS:85059862147

VL - 246

SP - 895

EP - 901

JO - Journal of Affective Disorders

JF - Journal of Affective Disorders

SN - 0165-0327

ER -