Trends and seasonality of emergency department visits and hospitalizations for suicidality among children and adolescents in the US from 2016 to 2021

Importance: The detection of seasonal patterns in suicidality should be of interest to clinicians and US public health officials, as intervention efforts can benefit by targeting periods of heightened risk. Objectives : To examine recent trends in suicidality rates, quantify the seasonality in suicidality, and demonstrate the disrupted seasonality patterns during the spring 2020 COVID-19–related […]

Suicidality and mood: The impact of trends, seasons, day of the week, and time of day on explicit and implicit cognitions among an online community sample

Decades of research have established seasonality effects on completed and attempted suicides, with rates increasing in spring. Little advancements have been made to explain this phenomenon, with most studies focusing almost exclusively on the number of suicide attempts and deaths. Using more than six years of data collected among a US, UK, and Canadian online […]

Seasonal variation of suicide in the city of São Paulo, Brazil, 1996-2010

Background: In light of the few reports from intertropical latitudes and their conflicting results, we aimed to replicate and update the investigation of seasonal patterns of suicide occurrences in the city of São Paulo, Brazil. Methods: Data relating to male and female suicides were extracted from the Mortality Information Enhancement Program (PRO-AIM), the official health statistics of […]

Suicide deaths and nonfatal hospital admissions for deliberate self-harm in the United States: Temporality by day of week and month of year

Background: No one knows whether the temporality of nonfatal deliberate self-harm in the United States mirrors the temporality of suicide deaths. Aims: To analyze day- and month-specific variation in population rates for suicide fatalities and, separately, for hospital admissions for nonfatal deliberate self-harm. Methods: For 12 states, we extracted vital statistics data on all suicides (n = 11,429) and hospital discharge […]

Increase in search interest for “suicide” and “depression” for particular days of the week and times of day: Analysis based on Google trends

Depression is the most common disorder in people who attempt suicide or die by suicide. Research review indicate that therapy of depression (including psychoeducation) is one of the main factors in the prevention of suicidal behavior. In this paper we examine the intensification of search interest for the terms “depression” and “suicide” in Google search […]

Seasonal changes and decrease of suicides and suicide attempts in France over the last 10 years

The objective of this study was to examine the evolution of suicides and suicide attempts over the last 10 years in France. We analyzed the number of deaths by suicide and suicide attempts in metropolitan France (2009–2018) from French national databases, on a daily, weekly or monthly basis. Seasonal variation in suicide rates was modeled using […]

The impact of daylight on suicide rates

Since Durkheim and Morselli found a spring peak in suicides in the late 19th century, researchers have presented possible explanations, including daylight variation, for this seasonal pattern. Our identification strategy exploits the idiosyncratic variation in daylight within Norwegian regions, arising from the country’s substantial latitudinal range. We use full population data for a period of […]

Can suicide behavior and seasonality of suicide be predicted from inflammatory parameters in adolescents?

According to the 2017 data of World Health organization approximately 800 million individuals commit suicide annually. After understanding that psychiatric  disorders start the inflammation process by suppressing the brain, a number of studies using neutrophil/lymphocyte ratio, platelet/lymphocyte ratio and  monocyte/lymphocyte ratio have been conducted. Platelet/lymphocyte ratio, neutrophil/lymphocyte ratio, monocyte/lymphocyte ratio and other hemogram parameters may […]

Variations in seasonal solar insolation are associated with a history of suicide attempts in bipolar I disorder

Background Bipolar disorder is associated with circadian disruption and a high risk of suicidal behavior. In a previous exploratory study of patients with bipolar I disorder, we found that a history of suicide attempts was associated with differences between winter and summer levels of solar insolation. The purpose of this study was to confirm this […]

Suicide timing in 18 states of the United States from 2003-2014

We investigated suicide timing over different time periods by age, sex and race/ethnicity. A total of 122,107 suicide deaths were identified from the population-based U.S. National Violent Death Reporting System in 18 U.S. states from 2003 through 2014. Suicides significantly increased (p < .05) from March to peak in September before falling, the first week of the […]

Seasonal variation in major depressive episode prevalence in Canada

Background.The purpose of this paper is to describe variation, over the months of the year, in major depressive episode (MDE) prevalence. This is an important aspect of the epidemiological description of MDE, and one that has received surprisingly little attention in the literature. Evidence of seasonal variation in MDE prevalence has been weak and contradictory. […]

The timing of general population and patient suicide in England, 1997-2012.

Highlights •Temporal variation is evident in suicide in England with higher risk in the early part of the year. •Suicide risk was significantly lower during the Christmas period. •A peak in suicide was found on New Year’s Day and Mondays in the general population. •Suicide risk was higher on Mondays in patients aged over 50 […]

Suicides in Trakya Region, Turkey, From 1984 to 2004

This study investigated some features of suicides in the Trakya region of Turkey. During the 21-year period, January 1984-September 2004, there were 137 suicides autopsied. Suicides comprised 16.1% of all forensic autopsies. 27% of cases were between 21 & 30 years of age. Males constituted 78.1% of cases. Suicide rates in males showed an increase […]