Midlife suicide: A systematic review and meta-analysis of socioeconomic, psychiatric and physical health risk factors

Suicide risk of chronic diseases and comorbidities: A Korean case-control study

OBJECTIVES

Chronic diseases including mental disorders have been associated with suicide. This study broadens the approach by incorporating a comprehensive list of chronic diseases and a context of comorbidities and explored their associations with suicide.

METHODS

Data-linkage between death registry and Korean National Health Insurance data was conducted. Suicide cases (n = 64,099) between 2009 and 2013 were 1:4 matched for gender and age to an alive control (n = 256,396). A total of 92 individual diseases of 9 broad categories were identified from insurance claims data. Conditional logistic regression was applied to assess the associations, adjusting for mental and behavioral disorders and socioeconomic status.

RESULTS

Suicide cases frequently experienced chronic diseases (90.0 %) and comorbidities (74.6 %). Chronic diseases greatly increased suicide risk and, among these, mental and behavioral disorders showed the highest suicide risk (OR = 7.53, 95 % CI = 7.32-7.74) followed by cardiovascular (OR = 3.36, 95 % CI = 3.26-3.47). For individual diseases, gastritis and duodenitis were most prevalent (68.1 %) among suicide cases but depressive disorder showed the highest risk (OR = 4.95, 95 % CI = 4.79-5.12). Suicide risk was strong in comorbid status sometimes comparable to odds for mental and behavioral disorder alone (e.g., OR for cardiovascular and eye vision-related diseases = 4.01, 95 % CI = 3.86-4.17).

LIMITATIONS

Differentiation of comorbidity was limited to pairs between major disease categories, neglecting the heterogeneity within categories.

CONCLUSION

Chronic diseases, in particular comorbidity, showed strong associations with suicide. This suggests that those with comorbidities feel that they are pushed to the extreme line, supporting comprehensive interventions for them to address wider reasons including psychological and social problems, besides medical problems.

Psychiatric profiles in suicidal attempters: Relationships with suicide behaviour features

BACKGROUND

Suicide constitutes a major health concern worldwide, being a significant contributor of death, globally. The diagnosis of a mental disorder has been extensively linked to the varying forms of suicidal ideation and behaviour. The aim of our study was to identify the varying diagnostic profiles in a sample of suicide attempters.

METHODS

A sample of 683 adults (71.3% females, 40.10±15.74 years) admitted at a hospital emergency department due to a suicide attempt was recruited. Latent class analysis was used to identify diagnostic profiles and logistic regression to study the relationship between comorbidity profile membership and sociodemographic and clinical variables.

RESULTS

Two comorbidity profiles were identified (Class I: low comorbidity class, 71.3% of attempters; Class II: high comorbidity class, 28.7% of attempters). Class I members were featured by the diagnosis of depression and general anxiety disorder, and low comorbidity; by contrast, the high comorbidity profile was characterized by a higher probability of presenting two or more coexisting psychiatric disorders. Class II included more females, younger, with more depressive symptoms and with higher impulsivity levels. Moreover, Class II members showed more severe suicidal ideation, higher number of suicide behaviours and a greater number of previous suicide attempts (p<.01, for all the outcomes), compared to Class I members.

CONCLUSIONS

Psychiatric profiles may be considered for treatment provision and personalized psychiatric treatment in suicidal attempters as well as tackle suicide risk.

The impact of housing-price-related indices on suicide rates in Taiwan

BACKGROUND

While certain socioeconomic factors have been studied in relation to suicide, housing-price-related indexes have rarely been investigated.

AIMS

This article aims to examine the impact of housing-price-related indexes on suicide rates in the general population of Taiwan, a country with high housing costs and suicide rates.

METHODS

The study utilized three national housing-price-related indexes from 2012 to 2019: (1) housing price index, (2) housing price to income ratio, and (3) housing rental index. Cause of Death Data was employed to calculate suicide rate. A linear regression model with autoregressive errors was used to analyze the association between housing-price-related indexes and suicide rates among different sex and age groups.

RESULTS

The findings revealed that higher housing rental index values were associated with increased suicide rates in young and middle-aged adults compared to the elderly population, regardless of sex. However, this association was not observed with the other two housing-price-related indexes (i.e. housing price index and housing price to income ratio).

CONCLUSION

These results offer valuable insights for policymakers, mental health professionals, and housing advocates to improve housing affordability and reduce the burden of suicide in the general population, particularly among younger generations.

Association between suicidal ideation and burnout: A meta-analysis

Approximately 700,000 people die by suicide annually worldwide. Researchers have explored a spectrum of experiences that involve stress in academic or work environments and potentially intensify suicidal thoughts or behaviors. However, no meta-analysis has examined the relationship between suicidal ideation (SI) and burnout. This study consisted of a meta-analysis to examine the association between SI and burnout syndrome, utilizing the WoS Core Collection, Scopus, PubMed, PsycINFO, DIALNET, and Google Scholar databases. Twenty-one samples met the study's eligibility criteria for inclusion in the analysis. The results revealed a significant relationship between SI and burnout, with the type of burnout (occupational, academic, and parental) emerging as the most significant moderating variable. Occupational burnout exhibited the lowest correlation, followed by academic and parental burnout. These findings suggest the importance of developing tools to assess SI within the context of the work environment, parenting and academics, and psychoeducational programs for managing stress.

Individual-level risk factors for suicide mortality in the general population: an umbrella review

BACKGROUND

Deaths by suicide remain a major public health challenge worldwide. Identifying and targeting risk factors for suicide mortality is a potential approach to prevention. We aimed to summarise current knowledge on the range and magnitude of individual-level risk factors for suicide mortality in the general population and evaluate the quality of the evidence.

METHODS

In this umbrella review, five bibliographic databases were systematically searched for articles published from database inception to Aug 31, 2022. We included meta-analyses of observational studies on individual-level risk factors for suicide mortality in the general population. Biological, genetic, perinatal, and ecological risk factors were beyond the scope of this study. Effect sizes were synthesised and compared across domains. To test robustness and consistency of the findings, evidence for small-study effects and excess significance bias (ie, the ratio between the overall meta-analysis effect size and that of its largest included study) was examined, and prediction intervals were calculated. Risk of bias was assessed by the Risk of Bias in Systematic Reviews instrument. The protocol was pre-registered with PROSPERO (CRD42021230119).

FINDINGS

We identified 33 meta-analyses on 38 risk factors for suicide mortality in the general population. 422 (93%) of the 454 primary studies included in the meta-analyses were from high-income countries. A previous suicide attempt and suicidal ideation emerged as strong risk factors (with effect sizes ranging from 6 to 16). Psychiatric disorders were associated with a greatly elevated risk of suicide mortality, with risk ratios in the range of 4-13. Suicide risk for physical illnesses (such as cancer and epilepsy) and sociodemographic factors (including unemployment and low education) were typically increased two-fold. Contact with the criminal justice system, state care in childhood, access to firearms, and parental death by suicide also increased the risk of suicide mortality. Among risk factors for which sex-stratified analyses were available, associations were generally similar for males and females. However, the quality of the evidence was limited by excess significance and high heterogeneity, and prediction intervals suggested poor replicability for almost two-thirds of identified risk factors.

INTERPRETATION

A wide range of risk factors were identified across various domains, which underscores suicide mortality as a multifactorial phenomenon. Prevention strategies that span individual and population approaches should account for the identified factors and their relative strengths. Despite the large number of risk factors investigated, few associations were supported by robust evidence. Evidence of causal inference will need to be tested in high-quality study designs.

FUNDING

Wellcome Trust.

Relationships of walking activity with depressed mood and suicidal ideation among the middle-aged Korean population: a nationwide cross-sectional study

Introduction

The suicide rate of middle-aged adults has increased rapidly, which is a significant public health concern. A depressed mood and suicidal ideation are significant risk factors for suicide, and non-pharmacological interventions such as exercise therapy have been suggested as potential treatments. Walking is a feasible and accessible form of exercise therapy for middle-aged adults.

Methods

We conducted a study based on the Seventh Korea National Health and Nutrition Examination Survey (2016-2018) data of 6,886 general middle-aged adults in South Korea to investigate the relationships of walking exercise with depressed mood and suicidal ideation. Multiple logistic regression analysis was used to adjust for confounding variables. Sampling weights were applied to obtain estimates for the general Korean population.

Results

Participants who walked ≥5 days per week had a significantly lower odds ratio (OR) for depressed mood [OR = 0.625, 95% confidence interval (CI): 0.424-0.921, p = 0.018] and suicidal ideation (OR = 0.252, 95% CI: 0.125-0.507, p < 0.001) compared to those who never walked, regardless of the duration of exercise. The same results were obtained for males after stratifying the data by sex and suicidal ideation was associated with walking in females.

Conclusion

Regular walking exercise was associated with diminished mental health problems in middle-aged adults. Light walks may serve as a useful starting point for patients with serious mental health issues, such as suicidal ideation.

Brief Report: Task-Shifting "Gold Standard" Clinical Assessment and Safety Planning for Suicide Risk Among People Living With HIV: A Feasibility and Fidelity Evaluation in Tanzania

BACKGROUND

Suicide is a leading cause of death among people living with HIV (PLWH) worldwide, with suicide deaths occurring twice as frequently among PLWH than among the general public. In Tanzania, resources for mental health care are sorely lacking, with 55 psychiatrists and psychologists providing treatment for 60 million people. In light of this shortage, nonspecialists play a crucial role. The objective of this study was to assess feasibility of implementing task-shifted screening, assessment, and safety planning for suicide risk among PLWH.

SETTING

Two adult HIV clinics in Kilimanjaro, Tanzania.

METHODS

Registered professional nurses in the HIV clinics were trained to administer brief screening of suicidal ideation in the past month. Patients experiencing suicidal ideation were referred to bachelor's-level counselors for further assessment and safety planning, supervised by specialist providers who reviewed audio recordings for quality assurance.

RESULTS

During 180 days of implementation, nurses screened patients attending 2745 HIV appointments. Sixty-one (2.2%) endorsed suicidal ideation and were linked to further assessment and safety planning. We cross-checked screening with clinic attendance logs on 7 random days and found high fidelity to screening (206 of 228 screened, 90%). Quality assurance ratings demonstrated key assessment pieces were consistently completed (mean = 9.3/10 possible), with "Good" to "Excellent" counseling skills (mean = 23.7/28) and "Good" to "Excellent" quality (mean = 17.1/20), including appropriate referral for higher levels of care.

CONCLUSIONS

Brief screening can be implemented and paired with task-shifted counseling to facilitate high-quality assessment of suicide risk. This model shows excellent potential to extend mental health services for PLWH in low-resource settings.

Millennials, the Most Afflicted Generation: Suicide Trends Within Dallas County From 2019 to 2021

ABSTRACT

In the wake of the SARS-CoV-2 (COVID-19) pandemic, mental health has become a pivotal topic of discussion nationwide.1,2 Recognition of mental health disorders, mitigation of psychological distress during times of uncertainty, and abating negative stigma have become a focus of many groups, both internal and external to the medical field. Still, one of the most devastating sequelae of mental health afflictions is suicide.A retrospective review of all cases classified as suicide from January 2019 through December 2021 was conducted using the laboratory information system database within the Southwestern Institute of Forensic Sciences, the county division that performs postmortem examinations of cases under the jurisdiction of Dallas County and some surrounding North Texas counties. A total of 846 cases were retrieved that occurred within Dallas County. This cohort consisted of 659 men and 187 women with an average age of 42.9 years (median, 40 years). This study highlights compelling trends of suicides within a localized portion of North Texas during a 3-year period in which the population endured momentous and unprecedented worldwide events.

Entrapment and social problem-solving in suicidal behavior across the adult lifespan

BACKGROUND

Feelings of entrapment and deficits in social problem-solving skills have been associated with risk for suicidal behavior in the context of depression. However, few studies have examined the effect of age on the association between these risk factors and suicidal behavior across most of the adult lifespan.

METHODS

In a three-site study, we tested interactions of age with feelings of entrapment and social problem-solving style in 105 depressed patients with a recent suicide attempt, 95 depressed patients with no history of suicide attempt, and 97 demographically similar non-psychiatric participants (age 16-80). Attempter/non-attempter differences, age interactions, and the relative contribution of entrapment and social problem-solving style to past attempter were examined.

RESULTS

Entrapment significantly interacted with age such that it discriminated past attempters from depressed non-attempters better at older ages. Social Problem-Solving Inventory (SPSI) total score and most subscales did not distinguish past attempters, but the SPSI Impulsive Style Problem-Solving was an effective discriminator of past suicide attempts across the full adult lifespan and did not interact with age. In a multipredictor model, both the entrapment by age interaction and SPSI Impulsive Style Problem-Solving score were significant predictors for the classification of attempters.

LIMITATIONS

The cross-sectional nature of our research design limited conclusions that may be drawn about individual change over time or cohort effects.

CONCLUSIONS

Entrapment did not distinguish past attempters at younger ages but became a better discriminator in middle to late adulthood. An impulsive problem-solving style was associated with past suicide attempts across the full adult lifespan.

Social Isolation, Healthy Habits, Inequality and Mental Health in the United States

The objective of this work is to deepen the analysis of the socioeconomic determinants of mental health, paying special attention to the impact of inequality, not only in income distribution but also in gender, racial, health and education inequality, social isolation, including new variables to measure loneliness, and healthy habits, on the mental health status. For this purpose, a cross-sectional model for a sample of 2735 counties in the United States is estimated using Ordinary Least Squares in its robust version to solve the detected heteroscedasticity problems. The results obtained show that inequality, social isolation and certain lifestyles, such as smoking or insomnia, are detrimental to mental health, while sexual activity prevents mental distress. On the other hand, poor counties suffer more cases of suicide, with food insecurity being the main problem for mental health. Finally, we found detrimental effects of pollution on mental health.

Association Between History of Psychiatric Disorder and Degree of Physical Injury Among Suicide Attempters: Secondary Data Analysis in a Japanese Rural Area

INTRODUCTION

While there may be differences in the choice of suicide methods between attempters with and those without a history of psychiatric disorders, it is not clear whether these differences predict the actual degree of physical injury. The present study aimed to investigate the association between the history of psychiatric disorder and the degree of physical injury among suicide attempters in a Japanese rural area.

METHODS

We conducted a cross-sectional study analyzing secondary data of 806 suicide attempters from April 2012 to March 2022 obtained from a Japanese rural city. The exposure variable was a history of psychiatric disorders. The primary outcome was the degree of physical injury of suicide attempters: moderate and severe. We conducted a multivariate Poisson regression analysis to estimate the prevalence ratios (PRs) and 95% confidence intervals (CIs).

RESULTS

Among 806 suicide attempters, a significant negative association between the history of psychiatric disorder and the degree of physical injury was observed (PR = 0.40; 95% CI, 0.28-0.59). Those with and without psychiatric disorders were more likely to choose low- and severe-lethality suicide methods such as drug or psychotropic overdoses and hanging or deep wrist injuries, respectively (P < .001).

CONCLUSIONS

The present study highlights the importance of considering suicide attempters, both with and without psychiatric disorders, while formulating targeted suicide prevention strategies.

Linking suicide and social determinants of health in South Korea: An investigation of structural determinants

Introduction

Studies have shown that suicide is closely related to various social factors. However, due to the restriction in the data scale, our understanding of these social factors is still limited. We propose a conceptual framework for understanding social determinants of suicide at the national level and investigate the relationships between structural determinants (i.e., gender, employment statuses, and occupation) and suicide outcomes (i.e., types of suicide, places of suicide, suicide methods, and warning signs) in South Korea.

Methods

We linked a national-level suicide registry from the Korea Psychological Autopsy Center with the Social Determinants of Health framework proposed by the World Health Organization's Commission on Social Determinants of Health.

Results

First, male and female suicide victims have clear differences in their typical suicide methods (fire vs. drug overdose), primary warning signs (verbal vs. mood), and places of death (suburb vs. home). Second, employees accounted for the largest proportion of murder-suicides (>30%). The proportion of students was much higher for joint suicides than for individual suicides and murder-suicides. Third, among individuals choosing pesticides as their suicide method, over 50% were primary workers. In terms of drug overdoses, professionals and laborers accounted for the largest percentage; the former also constituted the largest proportion in the method of jumping from heights.

Conclusion

A clear connection exists between the investigated structural factors and various suicide outcomes, with gender, social class, and occupation all impacting suicide.