One-week suicide risk prediction using real-time smartphone monitoring: Prospective cohort study

Background: Suicide is a major global public health issue that is becoming increasingly common despite preventive efforts. Though current methods for predicting suicide risk are not sufficiently accurate, technological advances provide invaluable tools with which we may evolve toward a personalized, predictive approach. Objective: We aim to predict the short-term (1-week) risk of suicide by […]

Sociodemographic inequalities of suicide: A population-based cohort study of adults in England and Wales 2011–21

Background: The risk of suicide is complex and often a result of multiple interacting factors. Understanding which groups of the population are most at risk of suicide is important to inform the development of targeted public health interventions. Methods: We used a novel linked dataset that combined the 2011 Census with the population-level mortality data in England […]

Protective factors for suicidal ideation: A prospective study from adolescence to adulthood

Adolescent suicidality is associated with negative outcomes in adulthood. Suicide prevention has traditionally focused on identifying risk factors, yet suicide rates have remained stable. With suicidality often going undetected—especially suicidal ideation, further knowledge about protective factors is needed. The main objective of this study was to investigate potential protective factors for suicidal ideation from adolescence […]

What distinguishes adolescents with suicidal thoughts from those who have attempted suicide? A population-based birth cohort study

Background Only one-third of young people who experience suicidal ideation attempt suicide. It is important to identify factors which differentiate those who attempt suicide from those who experience suicidal ideation but do not act on these thoughts. Methods Participants were 4,772 members of the Avon Longitudinal Study of Parents and Children (ALSPAC), a UK population-based […]

Self-harm and suicide death in the three years following hospitalization for intentional self-harm in adolescents and young adults: A nationwide study

Self-harm is frequent in youths. This study aimed to assess the risk of self-harm and mortality over a three-year period following self-harm hospitalization. Data were extracted from national databases in France. All patients aged 12 to 24 years and hospitalized for self-harm in 2013-2014 were included and compared to age- and sex-matched individuals with no […]

Self-harm in primary school-aged children: Prospective cohort study

Introduction No prospective studies have examined the prevalence, antecedents or concurrent characteristics associated with self-harm in non-treatment-seeking primary school-aged children. Methods In this cohort study from Melbourne, Australia we assessed 1239 children annually from age 8–9 years (wave 1) to 11–12 years (wave 4) on a range of health, social, educational and family measures. Past-year […]

Association between endometriosis and mental disorders including psychiatric disorders, suicide, and all-cause mortality: A nationwide population-based cohort study in Taiwan

Objective: A multitude of previous studies has substantiated that endometriosis correlated highly with psychiatric health. This study aims to investigate the association between endometriosis and psychiatric health. Methods: Utilizing the National Health Insurance Research Database of Taiwan, 100,770 enrolled participants, including 20,154 patients with endometriosis and 80,616 in the control group (1:4), matched for age, and index […]

The development of suicide risk in people with severe mental disorders during the first year of the COVID‑19 pandemic: A claims‑based cohort study

Purpose: In this study, we assess how the first and second waves of the COVID-19 pandemic influenced the suicide risk of patients with severe mental disorders in Germany. Methods: We analyzed German health insurance claims data to compare the suicide risk of patients with severe mental disorders before and during the pandemic. We included n = 690,845 […]

Identify adolescents’ help-seeking intention on suicide through self- and caregiver’s assessments of psychobehavioral problems: Deep clustering of the Tokyo TEEN Cohort study

Background Psychopathological and behavioral problems in adolescence are highly comorbid, making their developmental trajectories complex and unclear partly due to technical limitations. We aimed to classify these trajectories using deep learning and identify predictors of cluster membership. Methods We conducted a population-based cohort study on 3171 adolescents from three Tokyo municipalities, with 2344 pairs of […]

Seasonal trends in antidepressant prescribing, depression, anxiety and self-harm in adolescents and young adults: An open cohort study using English primary care data

Background There is an increasing demand for mental health services for young people, which may vary across the year. Objective To determine whether there are seasonal patterns in primary care antidepressant prescribing and mental health issues in adolescents and young adults. Methods This cohort study used anonymised electronic health records from general practices in England contributing to QResearch. […]

Analysis of all non-fatal self-harm cases in an urban area of Japan during pre- and peri-pandemic periods of COVID-19: A population-based study

Background: This study aimed to examine population-based characteristics of non-fatal self-harm in an urban area during pre- and peri-pandemic periods of COVID-19 by sex, age, and severity of self-harm, using pre-hospital medical emergency records. Methods: We used a registry of all pre-hospital medical records of self-harm cases that occurred in Kawasaki City, Japan, between January 2018 and […]

Predicting suicidal ideation in psychiatrically hospitalized veterans using the death/suicide Implicit Association Test: A prospective cohort study

Introduction We investigated whether the Death/Suicide Implicit Association Test (D/S-IAT) predicted suicidal ideation (SI) in psychiatric inpatients. Methods One hundred eighty veterans admitted for either SI or suicidal behavior (SB) (the primary sample) (N = 90) or alcohol detoxification (N = 90) completed the D/S-IAT and scales measuring SI. Correlation and regression coefficients were measured between the D/S-IAT (as […]

Understanding suicidal transitions in Australian adults: Protocol for the LifeTrack prospective longitudinal cohort study

Background The factors that influence transition from suicidal ideation to a suicide attempt or remission of suicidal thoughts are poorly understood. Despite an abundance of research on risk factors for suicidal ideation, no large-scale longitudinal population-based studies have specifically recruited people with suicidal ideation to examine the mechanisms underlying critical transitions to either suicide attempt […]

External validation and updating of a statistical civilian-based suicide risk model in US Naval primary care

Importance  Suicide remains an ongoing concern in the US military. Statistical models have not been broadly disseminated for US Navy service members. Objective  To externally validate and update a statistical suicide risk model initially developed in a civilian setting with an emphasis on primary care. Design, Setting, and Participants  This retrospective cohort study used data collected from 2007 […]

Gender differences in transdiagnostic domains and function of adults measured by DSM-5 assessment scales at the first clinical visit: A cohort study

Background Measurement-based care has been called for as best practice in psychiatric care and learning health systems and use of transdiagnostic measures was suggested as part of the DSM-5. Our objective is to examine gender differences in first visit socioeconomic, transdiagnostic, and functional characteristics of a dynamic, real-world measurement-based care cohort. Methods Transdiagnostic, functional, and […]

Transition to a first suicide attempt among young and middle-aged males with a history of suicidal thoughts: A two-year cohort study

Introduction Although many studies have examined the risk and protective factors associated with suicidal behavior, little is known about the probability of transition from suicidal thoughts to suicidal attempts and the factors that distinguish those who have suicidal thoughts from those who progress to a suicide attempt. Objectives To determine the probability and predictors of […]

Socioeconomic factors and suicide risk in Polish cancer patients: A population-based cohort study exploring associations and implications

Introduction. This study aimed to explore socioeconomic factors influencing the suicide rate in Polish cancer patients. Material and methods. Data on cancer cases and socioeconomic covariates were obtained from the Polish National Cancer Registry and Statistics Poland. Suicide rates were calculated for each year. Multivariable linear regression analyses explored associations between unemployment, income, university education, access to physicians overall […]

Childhood contact with social services and risk of suicide or sudden death in young adulthood: Identifying hidden risk in a population-wide cohort study

Background: Childhood out-of-home care is associated with premature death in adulthood, in particular death by suicide, accidents and violence. However, little is known about the mortality risk in the much larger population of adults that had contact with social services in childhood but never entered out-of-home care. We determine the association between all tiers of […]

Depression and anxiety-related disorders and suicide among Swedish male elite football players: A nationwide cohort study

Objective To assess whether male elite football players, during and after their active career, were at increased risk of depression and anxiety-related disorders and suicide, as compared with the general male population. Methods We included male football players active in the Swedish top division 1924–2019 and general male population (matched to football players based on age and […]

Cause-specific excess mortality after first diagnosis of bipolar disorder: Population-based cohort study

Background: Bipolar disorder (BD) is associated with increased mortality, but evidence on cause-specific mortality is limited. Objective: To investigate cause-specific premature excess mortality in BD. Methods: Finnish nationwide cohort study of individuals with and without a diagnosis of BD who were aged 15-64 years during 2004-2018. Standardised mortality ratios (SMRs) with 95% CIs were calculated for BD using […]

Association of workplace violence and bullying with later suicide risk: A multicohort study and meta-analysis of published data

Background: Workplace offensive behaviours, such as violence and bullying, have been linked to psychological symptoms, but their potential impact on suicide risk remains unclear. We aimed to assess the association of workplace violence and bullying with the risk of death by suicide and suicide attempt in multiple cohort studies. Methods: In this multicohort study, we used individual-participant […]

Intentional self-harm among US veterans with traumatic brain injury or posttraumatic stress disorder: Retrospective cohort study from 2008 to 2017

Background: Veterans with a history of traumatic brain injury (TBI) and/or posttraumatic stress disorder (PTSD) may be at increased risk of suicide attempts and other forms of intentional self-harm as compared to veterans without TBI or PTSD. Objective: Using administrative data from the US Veterans Health Administration (VHA), we studied associations between TBI and PTSD diagnoses, and […]

Suicide and depression in former contact sports participants: Population-based cohort study, systematic review, and meta-analysis

Background: Former participants in sports characterised by low intensity repetitive head impact appear to have elevated rates of later dementia, but links with other psychological health outcomes such as depression and suicide are uncertain. We quantified the occurrence of these endpoints in former contact sports athletes against general population controls using new data from a cohort […]