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Suicide seasonality

Chi-Leung Kwok, Paul S F Yip
BACKGROUND: The study of temporal variation in self-harm is important to understanding the underlying mechanisms of its occurrence. There are fewer studies on temporal variation in self-harm than in suicide. The aim of this study was to examine the seasonality of self-harm in Hong Kong and to test the hypothesis of diminishing seasonality. METHODS: We used secondary data from medical records of self-harm obtained from all the public hospitals in Hong Kong under the management of the Hospital Authority...
September 23, 2016: Journal of Affective Disorders
Mari Nerhus, Akiah O Berg, Levi R Kvitland, Ingrid Dieset, Sigrun Hope, Sandra R Dahl, Melissa A Weibell, Kristin L Romm, Ann Faerden, Ole A Andreassen, Ingrid Melle
BACKGROUND: There are indications that low S-25(OH)D is associated with increased disease severity in psychotic disorder. Our first aim was to investigate the relations between low S-25(OH)D and positive, negative and depressive symptoms. Our second aim was to explore if associations between S-25(OH)D and symptoms were influenced by levels of inflammatory markers. METHODS: Participants (N=358) with a medical history of one or more psychotic episodes were recruited...
August 29, 2016: Schizophrenia Research
Yousef Veisani, Ali Delpisheh, Kourosh Sayehmiri, Ghobad Moradi, Jafar Hassanzadeh
No abstract text is available yet for this article.
September 2016: Iranian Journal of Medical Sciences
Guo-Zhen Lin, Li Li, Yun-Feng Song, Ying-Xue Zhou, Shuang-Quan Shen, Chun-Quan Ou
BACKGROUND: Preventing suicide is a global imperative. Although the effects of social and individual risk factors of suicide have been widely investigated, evidence of environmental effects of exposure to air pollution is scarce. We investigated the effects of ambient air pollution on suicide mortality in Guangzhou, China during 2003-2012. METHODS: A conditional logistic regression analysis with a time-stratified case-crossover design was performed to assess the effects of daily exposure to three standard air pollutants, including particulate matter less than 10 μm in aerodynamic diameter (PM10), sulphur dioxide (SO2) and nitrogen dioxide (NO2), on suicide mortality, after adjusting for the confounding effects of daily mean temperature, relative humidity, atmospheric pressure and sunshine duration...
2016: Environmental Health: a Global Access Science Source
Andrea Aguglia, Marta Moncalvo, Francesca Solia, Giuseppe Maina
OBJECTIVE: The aim of this study is to assess the prevalence of involuntary admissions with regard to seasonality and clinical associated features, in a sample of patients admitted to a psychiatric unit in a period of 24 months. METHODS: All subjects consecutively admitted to the Psychiatric Inpatient Unit of the San Luigi Gonzaga Hospital, Orbassano (University of Turin, Italy) from September 2013 to August 2015 were recruited. Socio-demographic and clinical characteristics were collected...
November 2016: International Journal of Psychiatry in Clinical Practice
K Ellicott Colson, Jessica Galin, Jennifer Ahern
Suicide is a leading cause of premature mortality. Aspects of the social environment such as incidents of violence in the community may induce psychological distress and affect suicidality, but these determinants are not well understood. We conducted an ecological study using California vital statistics records, geocoded to address of the decedent, to examine whether proximity to homicide was associated with the occurrence of suicide in urban census tracts. For each urban tract (N = 7194) and each month in 2012, we assessed homicides in the tract or within buffer zones around the tract with a 1-month lag...
October 2016: Journal of Urban Health: Bulletin of the New York Academy of Medicine
J L Anderson, M A St Hilaire, R R Auger, C A Glod, S J Crow, A N Rivera, S M Fuentes Salgado, S J Pullen, T K Kaufman, A J Selby, D J Wolfe
Despite widely published speculation regarding a potential potency advantage of short-wavelength (blue-appearing) light for Seasonal Affective Disorder (SAD) treatment, there have been few systematic studies. Those comparing short-wavelength to broad-wavelength (white) light under actual clinical conditions suggest equivalent effectiveness. This multicenter, parallel-group design trial was undertaken to compare the effects of light therapy on SAD using blue (~465 nm) versus blue-free (595-612 nm) LED lights...
August 5, 2016: Chronobiology International
Antonio Preti, Gianluca Lentini
The prediction of suicidal behavior is a complex task. To fine-tune targeted preventative interventions, predictive analytics (i.e. forecasting future risk of suicide) is more important than exploratory data analysis (pattern recognition, e.g. detection of seasonality in suicide time series). This study sets out to investigate the accuracy of forecasting models of suicide for men and women. A total of 101 499 male suicides and of 39 681 female suicides - occurred in Italy from 1969 to 2003 - were investigated...
2016: Chronobiology International
Mark E Beecher, Dennis Eggett, Davey Erekson, Lawrence B Rees, Jennie Bingham, Jared Klundt, Russell J Bailey, Clark Ripplinger, Jessica Kirchhoefer, Robert Gibson, Derek Griner, Jonathan C Cox, R D Boardman
BACKGROUND: Researchers have examined the relationship between mental health and weather/pollution with mixed results. The current study aimed to examine a range of weather and atmospheric phenomena and their association with time-bound mental health data. METHODS: Nineteen different weather/pollution variables were examined in connection with an archive of self-reported mental health data for university students participating in mental health treatment (n=16,452) using the Outcome Questionnaire 45...
November 15, 2016: Journal of Affective Disorders
Haekyung Jeon-Slaughter, Cynthia A Claassen, David A Khan, Perry Mihalakos, Kevin B Lee, E Sherwood Brown
OBJECTIVES: Prior research suggests a possible association between pollen and suicide. No studies have examined the relationship between pollen and attempted suicide. This study examines the temporal association between airborne pollen counts and nonfatal suicidal and nonsuicidal self-directed violence (SDV) requiring an emergency department visit. METHODS: Data on daily emergency department visits due to nonfatal SDV as identified by ICD-9 diagnosis criteria were extracted from emergency department medical records of Parkland Memorial Hospital in Dallas, Texas, between January 2000 and December 2003...
June 7, 2016: Journal of Clinical Psychiatry
Naser Mozafari, Haleh Talaie, Simin Dokht Shoaei, Morteza Hashemian, Arezou Mahdavinejad
BACKGROUND: Body temperature is a critical criterion of health. Drugs and a variety of poisons can affect body temperature in poisoned patients, causing hyperthermia and hyperpyrexia. OBJECTIVES: Our previous study's findings in patients poisoned with organophosphate led us to the goal of this study: obtaining the initial tympanic temperature in patients poisoned by a variety of toxins. MATERIALS AND METHODS: A cross-sectional study reviewed the records of poisoned patients who were admitted to the toxicological intensive care unit (TICU) at Loghman Hakim hospital poison center (LHHPC) from February 2014 to February 2015...
April 2016: Iranian Red Crescent Medical Journal
Carl Johan Wingren, Anders Ottosson
Overweight and obesity is associated with lower rates of suicide. However, little is known about the association with different suicide methods. We studied the association between groups of body mass index and suicide methods. We identified all medicolegal autopsy cases with a cause of death due to external causes in Sweden during 1999-2013 (N = 39,368) and included 11,715 suicides and 13,316 accidents or homicides as controls. We applied multinomial regression models adjusted for age, sex, year and season of death...
August 2016: Journal of Forensic and Legal Medicine
Tetsuya Matsubayashi, Michiko Ueda, Kanako Yoshikawa
BACKGROUND: Seasonality in youth suicide has been speculated to be associated with the school calendar, as it tends to increase at the beginning of the academic year or after a long break, but robust empirical evidence remains scarce. METHODS: We examined the nationwide death records in the Vital Statistics of Japan to investigate the seasonal patterns of suicide among youth. Our data set included 108 968 suicides by individuals who died at 6-26 years of age between 1974 and 2014 in Japan...
May 25, 2016: Journal of Epidemiology and Community Health
Everett J Lehman, Misty J Hein, Christine M Gersic
BACKGROUND: There is current disagreement in the scientific literature about the relationship between playing football and suicide risk, particularly among professional players in the National Football League (NFL). While some research indicates players are at high risk of football-related concussions, which may lead to chronic traumatic encephalopathy and suicide, other research finds such a connection to be speculative and unsupported by methodologically sound research. PURPOSE: To compare the suicide mortality of a cohort of NFL players to what would be expected in the general population of the United States...
May 5, 2016: American Journal of Sports Medicine
Inga Markiewicz, Janusz Heitzman, Ewa Gardyńska-Ziemba
OBJECTIVES: The aim of the study was to analyse the structure of involuntary psychiatric holds in Institute of Psychiatry and Neurology in Warsaw, throughout the year. Our research interests included socio-demographic profiles of the patients, time of admissions (time of a day/night/ season), type of diagnoses at admission and suicide attempts preceding the admission. We also analysed the normative aspect of involuntary admissions, i.e. which Articles of the Polish Mental Health Act constituted the basis for these patients admission, and if the choice of articles was justifiable by a diagnosis of the mental disorder...
2016: Psychiatria Polska
Juhyun Park, Nari Choi, Seog Ju Kim, Soohyun Kim, Hyonggin An, Heon-Jeong Lee, Yu Jin Lee
The association between celebrity suicide and subsequent increase in suicide rates among the general population has been suggested. Previous studies primarily focused on celebrity suicides in the 2000s. To better understand the association, this study examined the impacts of celebrity suicides on subsequent suicide rates using the data of Korean celebrity suicides between 1990 and 2010. Nine celebrity suicides were selected by an investigation of media reports of suicide deaths published in three major newspapers in Korea between 1990 and 2010...
April 2016: Journal of Korean Medical Science
M L Silveira, L Wexler, J Chamberlain, K Money, R M C Spencer, N G Reich, E R Bertone-Johnson
OBJECTIVES: Suicide is a leading cause of death worldwide, and disproportionately affects Indigenous populations. Seasonal suicide patterns are variable in the literature, and could offer novel approaches to the timing and focus of prevention efforts if better understood. With a suicide surveillance system in place since 1989, this study offers an unprecedented opportunity to explore seasonal variations in both fatal and non-fatal suicide behavior in an Indigenous Arctic region. STUDY DESIGN: Cross-sectional...
August 2016: Public Health
Vania Ceccato, Adriaan Uittenbogaard
The objective of this study is to understand the spatial and temporal dynamics of suicides in commuting railway environments. Data on suicides in Stockholm commuting railway from 2006 to 2013 was analysed. The study sets out to identify significant clusters in suicides then evaluate whether commuting railway environments affect variations in suicide rates. Fieldwork inspection, spatial cluster techniques (NNHC and Getis-Ord statistics) and regression models underlie the methodology of study. Findings show no seasonality was observed in suicide cases, but winter months concentrate a larger share of events...
July 1, 2016: Journal of Affective Disorders
Seon-Cheol Park, Jeong-Kyu Sakong, Bon Hoon Koo, Jae-Min Kim, Tae-Youn Jun, Min-Soo Lee, Jung-Bum Kim, Hyeon-Woo Yim, Yong Chon Park
We aimed to examine the potential relationship between season of birth (SOB) and clinical characteristics in Korean patients with unipolar non-psychotic major depressive disorder (MDD). Using data from the Clinical Research Center for Depression (CRESCEND) study in South Korea, 891 MDD patients were divided into two groups, those born in spring/summer (n=457) and those born in autumn/winter (n=434). Measurement tools comprising the Hamilton Depression Rating Scale, Hamilton Anxiety Rating Scale, Brief Psychiatric Rating Scale, Scale for Suicidal Ideation, Clinical Global Impression of severity, Social and Occupation Functional Assessment Scale, WHO Quality of Life assessment instrument-abbreviated version, Alcohol Use Disorder Identification Test, and Temperament and Character Inventory were used to evaluate depression, anxiety, overall symptoms, suicidal ideation, global severity, social function, quality of life, drinking, and temperament and character, respectively...
May 2016: Yonsei Medical Journal
Brendan Cavanagh, Saied Ibrahim, Alison Roscoe, Harriet Bickley, David While, Kirsten Windfuhr, Louis Appleby, Nav Kapur
BACKGROUND: There have been conflicting findings on temporal variation in suicide risk and few have examined the phenomenon in clinical populations. The study investigated seasonal and other temporal patterns using national data. METHODS: Data on 73,591 general population and 19,318 patient suicide deaths in England between 1997 and 2012 were collected through the National Confidential Inquiry into Suicide examining suicide rates in relation to month of the year, day of the week, and individual days of national or religious significance...
June 2016: Journal of Affective Disorders
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