Disclosure of suicidal ideation and behaviours: A systematic review and meta-analysis of prevalence

Association between cardiometabolic index (CMI) and suicidal ideation: The mediating role of depression and cardiovascular disease

BACKGROUND

Although existing evidence has shown a significant relationship between lipids and suicidal ideation, the relationship between Cardiometabolic index (CMI) and suicidal ideation remains unclear. This study aimed to explore the association between CMI and suicidal ideation. Furthermore, we explored whether several common CMI-related diseases mediate this association.

METHODS

This cross-sectional study analyzed data from 13,549 adults in the National Health and Nutrition Examination Survey (NHANES) from 2005 to 2018. Weighted multivariate regression models and restricted cubic spline (RCS) were used to examine the association between CMI and suicidal ideation. Subgroup and interaction analyses were conducted to assess the robustness of findings across different populations. Mediation analysis was performed to evaluate the potential mediating roles of depression, coronary artery disease (CVD), hypertension, and diabetes in this relationship.

RESULTS

In the fully adjusted model, each unit increase in CMI was associated with a 17 % increase in the risk of suicidal ideation. Compared to the lowest tertile, participants in the highest tertile had a 41 % increased likelihood of suicidal ideation (95 % CI: 1.05-1.91). The association between CMI and suicidal ideation was consistent across different populations (all P for interaction >0.05). Depression and CVD partially mediated this relationship, accounting for 20.4 % and 4.5 % of the total effect, respectively.

CONCLUSIONS

CMI is associated with an increased risk of suicidal ideation, with depression and CVD acting as partial mediators in this relationship. Reducing CMI with the goal of improving obesity and glucose and lipid disorders may be a key strategy to reduce suicidal ideation.

Machine learning based identification of suicidal ideation using non-suicidal predictors in a university mental health clinic

Suicide causes over 700,000 deaths annually worldwide. Mental disorders are closely linked to suicidal ideation, but predicting suicide remains complex due to the multifaceted nature of contributing factors. Traditional assessment tools often fail to capture the interactions that drive suicidal thoughts, underscoring the need for more sophisticated predictive approaches. This study aimed to predict suicidal and self-harm ideation among university students using machine learning models without relying on suicidal behavior related predictors. The goal was to uncover less obvious risk factors and provide deeper insights into the complex relationships between psychiatric symptoms and suicidal ideation. Data from 924 university students seeking mental health services were analyzed using seven machine learning algorithms. Suicidal ideation was assessed through the 9th item of the Patient Health Questionnaire-9. Three predictive models were developed, with the final model utilizing only subdomains from the DSM-5 Level 1 Self Rated Cross-Cutting Symptom Measure. Feature importance was assessed using SHAP and Integrated Gradients techniques. To ensure model generalizability, the best-performing model was externally validated on a separate dataset of 361 individuals. Machine learning models achieved strong predictive accuracy, with logistic regression and neural networks reaching AUC values of 0.80. The final model achieved an AUC of 0.80 on the training data and 0.79 on external validation data. Key predictors of suicidal ideation included personality functioning and depressed mood (both increasing the likelihood), while anxiety and repetitive thoughts were associated with a decreased likelihood. The use of non-suicidal predictors across datasets highlighted psychiatric dimensions relevant to early intervention. This study demonstrates the effectiveness of machine learning in predicting suicidal ideation without relying on suicide-specific inputs. The findings emphasize the critical roles of personality functioning, mood, and anxiety in shaping suicidal ideation. These insights can enhance early detection and personalized interventions, especially in individuals reluctant to disclose suicidal thoughts.

Psychometric evaluation of a brief self-report measure and of EMA items assessing the suicide crisis syndrome: Insights on reliability, validity and temporal variability

The present work psychometrically evaluates a brief self-report questionnaire and novel ecological momentary assessment (EMA) items to assess the Suicide Crisis Syndrome (SCS). Data from n = 220 psychotherapy outpatients (sample 1) and n = 142 psychiatric inpatients after a suicide attempt or suicidal crisis (sample 2) are analyzed (cross-sectional, study 1; 21 to 24 day EMA, study 2). Dimensionality is examined by exploratory factor analysis in sample 1 and subsequently cross-validated by confirmatory factor analysis (CFA) in sample 2 (self-report questionnaire). Convergent validity is determined by correlation analysis. Dimensionality is examined by multilevel CFA. Temporal instability and associations of the SCS with affect, context and sleep are examined. Unidimensionality of both measures is supported with good to excellent reliability (α = 0.83 in sample 1, ϖ = 0.91 in sample 2 [self-report questionnaire]; ϖ = 0.83 prompt-level and ϖ = 0.94 person-level [EMA]). Correlations supported convergent validity. The SCS fluctuated moderately over time (with 26 % of the variance being attributable to changes on the within-person level and high heterogeneity between participants) with extreme shifts being not very likely. The EMA SCS items appeared to be context-sensitive and vary according to sleep quality and valence of affective states. The self-report questionnaire and the novel EMA items are brief and reliable tools to repeatedly assess the SCS. The study demonstrates for the first time that the SCS can be assessed at the moment and waxes and wanes over time.

Opioid Misuse and Suicide-Related Outcomes Among Adolescents and Young Adults: A Systematic Review

The purpose of this systematic review is to assess evidence for an association between opioid misuse and suicide-related outcomes among youth and young adults (aged 12-30 years). A Boolean search strategy of eligible publications from January 1990 to June 2024 identified 2,696 independent citations. An additional 10 were identified through reference screening. A total of 55 publications met the inclusion criteria. Twelve studies used administrative data and 43 were based on observational data. Risk of bias was assessed qualitatively by domain. Nearly all (98%) studies using observational data found an association between opioid misuse and at least one suicide-related outcome (e.g., suicidal ideation, suicide plan, suicide attempt). Administrative data studies had higher risk of bias compared with observational studies, typically due to higher confounding bias. Reporting bias was moderate to high across all studies in the review. Our review provides clear evidence of the association between opioid misuse and suicide-related outcomes among youth and young adults. However, we highlight a need for longitudinal research on the directionality of the association and potential mechanisms.

Differences in Reporting Suicide Ideation and Attempt: Implications for Suicide Risk Screening in Pediatric Primary Care

OBJECTIVE

Pediatricians are uniquely positioned to identify suicide-related risk, yet clinical practices as to when, how, and who gets screened may vary due to differences in policy statements on youth suicide risk screening in primary care. To address these differences, we examined agreement between reports of past suicide ideation (SI) and suicide attempt (SA) across multiple assessment methods and over time. We further explored associations across sociodemographic factors and severity of mental health symptoms on reporting patterns on these methods for adolescents at elevated risk.

METHODS

Adolescents (N = 162) with SI and/or SA were recruited from multiple clinical sites in and around New York City. Adolescents completed interviews and self-report measures validated to assess suicide-related risk, depressive symptoms, and anxiety symptoms.

RESULTS

Agreement between questions on verbal interviews over time was fair (κ = 0.38), with adolescents under-reporting lifetime SI as time from a crisis went by. Agreement between questions on self-report measures was moderate (κ = 0.51), with adolescents under-reporting past-month SI on a depression screen compared to a suicide-specific screen. Participants with less severe mental health-related symptoms were significantly less likely to report past-month SI consistently.

CONCLUSIONS

This study highlights important trends in suicide-related reporting patterns among adolescents at elevated risk for suicide and may have important implications for clinical practice guidelines. To capture more adolescents at risk for suicide, results not only support a universal screening approach using suicide-specific tools but may suggest the need to increase screening frequency in pediatric primary care.

Suicide-related disclosure patterns among culturally minoritized youth: Examining differences across race, ethnicity, gender identity, and sexual orientation

OBJECTIVE

Sharing one's suicidal thoughts and behaviors, or suicide-related disclosure, allows adolescents to recruit help from others. Despite elevated risk among culturally minoritized youth, their suicide-related disclosure remains understudied.

METHODS

191 adolescents (M = 15.98, SD = 1.04, range = 13-17), including minoritized youth (38% racially, 19% ethnically, 40% gender, and 77% sexually), were recruited via social media ads and completed an anonymous online survey on suicide-related disclosure to informal support sources (e.g., family, friends). Disclosure rates, targets, and reasons for disclosure and nondisclosure were compared based on race, ethnicity, gender identity, and sexual orientation.

RESULTS

Racially minoritized adolescents less often disclosed suicidal ideation and more strongly endorsed fear of negative reactions and resistance to intervention as reasons for nondisclosure, and reciprocity as reasons for disclosure, than White adolescents. Cisgender adolescents less often disclosed suicidal ideation and more strongly endorsed dismissal of suicide risk as reasons for nondisclosure than gender minoritized adolescents. Non-Hispanic adolescents more strongly endorsed help-seeking as reasons for disclosure than Hispanic adolescents. While adolescents overall disclosed most often to friends, heterosexual adolescents disclosed more to family than sexually minoritized adolescents.

CONCLUSION

Racial and gender disparities in suicide-related disclosure may occur for distinct reasons among adolescents. Uncovering patterns of disclosure may facilitate detection of suicide risk among minoritized youth.

Predictors and patterns of suicidal ideation disclosures among American adults

INTRODUCTION

When experiencing suicidal thoughts, many individuals do not tell others, making it difficult to ensure suicide prevention resources reach those who need it.

METHODS

The current study utilizes a large sample of US adults who have experienced suicidal ideation in their lifetime (n = 1074) to examine predictors of disclosures. We also explore who participants disclose to and how helpful these disclosures are rated.

RESULTS

A majority (n = 812, 75.6%) reported disclosing. Black and Hispanic participants were less likely to disclose than White participants. Those who were never married were more likely to disclose, as were those who have attempted suicide. Mental healthcare utilization and favorable attitudes toward mental healthcare were also positive predictors of disclosure. More participants reported disclosing to a personal connection (n = 532, 65.5%) than a mental health professional (n = 282, 34.8%). On average, most sources were rated as neither helpful nor harmful.

CONCLUSION

The study highlights those who may be at a higher risk of experiencing suicidal thoughts but going unidentified. To increase helpfulness of disclosures, suicide prevention programming should emphasize training for laypersons and professionals on how to effectively respond when someone reveals that they are thinking of suicide.

The role of suicidal motivations in adolescence: implications for the psychotherapeutic treatment of suicidal risk

The study of suicidal risk has increasingly emphasized the importance of assessing specific suicidal motivations. Motivations express an elaboration of the condition of psychache, representing an effective perspective on the management of suicidal risk in psychotherapy. This study explores suicidal motivations and personality pathology in a clinical sample of adolescents with suicidal ideation or a history of suicide attempts. We aim to investigate how specific motivational factors and personality disorders (PDs) contribute to the foreseeability of suicidal outcomes, such as the occurrence, number, and lethality of suicide attempts and their interaction with the impact of personality disorders. A sample of 134 adolescents aged 12-18, with active suicidal ideation or recent suicide attempts, was assessed using a combination of self-report measures and structured clinical interviews. Binomial logistic regressions and linear regressions were conducted to explore the predictive value of PDs and motivational factors on suicidal behaviors. The results indicate that specific suicidal motivations, such as interpersonal influence, escape fantasy, and absence of fear, provide an additional increase in the foreseeability value beyond personality disorder criteria alone. These findings suggest that assessing suicidal motivations can significantly enhance risk evaluation and inform more effective therapeutic interventions. Beyond identifying certain risk factors, the therapist's ability to diss and process specific suicidal motivations in the context of the therapeutic relationship can be a decisive factor in monitoring and directly intervening on the risk.

Automated Real-Time Tool for Promoting Crisis Resource Use for Suicide Risk (ResourceBot): Development and Usability Study

BACKGROUND

Real-time monitoring captures information about suicidal thoughts and behaviors (STBs) as they occur and offers great promise to learn about STBs. However, this approach also introduces questions about how to monitor and respond to real-time information about STBs. Given the increasing use of real-time monitoring, there is a need for novel, effective, and scalable tools for responding to suicide risk in real time.

OBJECTIVE

The goal of this study was to develop and test an automated tool (ResourceBot) that promotes the use of crisis services (eg, 988) in real time through a rule-based (ie, if-then) brief barrier reduction intervention.

METHODS

ResourceBot was tested in a 2-week real-time monitoring study of 74 adults with recent suicidal thoughts.

RESULTS

ResourceBot was deployed 221 times to 36 participants. There was high engagement with ResourceBot (ie, 87% of the time ResourceBot was deployed, a participant opened the tool and submitted a response to it), but zero participants reported using crisis services after engaging with ResourceBot. The most reported reasons for not using crisis services were beliefs that the resources would not help, wanting to handle things on one's own, and the resources requiring too much time or effort. At the end of the study, participants rated ResourceBot with good usability (mean of 75.6 out of 100) and satisfaction (mean of 20.8 out of 32).

CONCLUSIONS

This study highlights both the possibilities and challenges of developing effective real-time interventions for suicide risk and areas for refinement in future work.

Late-life suicide: machine learning predictors from a large European longitudinal cohort

Background

People in late adulthood die by suicide at the highest rate worldwide. However, there are still no tools to help predict the risk of death from suicide in old age. Here, we leveraged the Survey of Health, Ageing, and Retirement in Europe (SHARE) prospective dataset to train and test a machine learning model to identify predictors for suicide in late life.

Methods

Of more than 16,000 deaths recorded, 74 were suicides. We matched 73 individuals who died by suicide with people who died by accident, according to sex (28.8% female in the total sample), age at death (67 ± 16.4 years), suicidal ideation (measured with the EURO-D scale), and the number of chronic illnesses. A random forest algorithm was trained on demographic data, physical health, depression, and cognitive functioning to extract essential variables for predicting death from suicide and then tested on the test set.

Results

The random forest algorithm had an accuracy of 79% (95% CI 0.60-0.92, p = 0.002), a sensitivity of.80, and a specificity of.78. Among the variables contributing to the model performance, the three most important factors were how long the participant was ill before death, the frequency of contact with the next of kin and the number of offspring still alive.

Conclusions

Prospective clinical and social information can predict death from suicide with good accuracy in late adulthood. Most of the variables that surfaced as risk factors can be attributed to the construct of social connectedness, which has been shown to play a decisive role in suicide in late life.

Improving assessment and management of suicide risk among people who inject drugs: A mixed methods study conducted at the Medically Supervised Injecting Centre, Sydney

INTRODUCTION

People who inject drugs are 13 times more likely to die by suicide than the general population. Guidelines for responding to risk in this population are limited. Harm reduction services attended by people who inject drugs require targeted strategies to address the complexities of suicide risk among this population.

METHODS

Co-design, engaging health professionals and people with lived experience informed the study. Mixed methods were used to understand the experience of managing suicide risk among clients attending the Medically Supervised Injecting Centre (MSIC) in Sydney. A survey was administered to assess staff confidence in managing risk. Focus groups were conducted with health professionals and MSIC clients to explore experiences of suicide management, response and opportunities for improvement.

RESULTS

Half (N = 17) the MSIC staff surveyed reported over 10 years' experience working with this population. Confidence in managing suicide risk was low. Three key themes emerged from focus groups (N = 17): (i) Autonomy and the need to involve clients in the assessment process; (ii) Trust between clients and health professionals, and transparency in decision-making; and (iii) System barriers, described by health professionals as inadequate referral pathways for clients in distress, and by clients as negative experiences of care, including involuntary admission and not receiving medication (e.g. methadone).

DISCUSSION AND CONCLUSIONS

Revised assessment guidelines and a tailored safety plan were developed. These resources are also suitable for other alcohol and other drug services. The challenge in managing suicide risk in harm reduction services is balancing duty of care with staff-client relationships and client engagement.

Pediatric suicide: Review of a preventable tragedy

Concepts of suicide are explored in this issue with a focus on suicide in children and adolescents. The epidemiology of pediatric suicide in the United States is reviewed; also, risk and protective factors, as well as prevention strategies, are discussed. Suicide in the pediatric athlete and the potential protective effect of exercise are examined. In addition, this analysis addresses the beneficial role of psychological management as well as current research on pharmacologic treatment and brain stimulation procedures as part of comprehensive pediatric suicide prevention. Though death by suicide in pediatric persons has been and remains a tragic phenomenon, there is much that clinicians, other healthcare professionals, and society itself can accomplish in the prevention of pediatric suicide as well as the management of suicidality in our children and adolescents.

"I don't wanna die, but my brain insists that I should": a big qualitative data approach to the lived experiences of suicidal thoughts

Introduction

There remains a dearth of knowledge concerning the phenomenology of suicidal thoughts, with research focusing on reasons for feeling suicidal rather than their mental expression. While clinical interviews remain the standard phenomenological approach, such exploration of lived experiences may prove challenging for this sensitive topic. As a complementary alternative, the use of naturally-occurring online data is opportune for capturing elaborations on tabooed phenomena.

Methods

In this phenomenological study, we present a thematic analysis on lived experiences of suicidal thoughts as spontaneously reported by non-identified users of a Reddit online board (r/Depression), collecting 668 posts using the search terms "suicidal ideation," "suicidal thoughts," and "suicide." Codes were grouped into descriptive categories summarizing the properties of thoughts, their effects, and their relation to suicide. Then, an interpretative synthesis yielded global themes connecting salient meanings on the experience of suicidal thoughts.

Results

With a long-term and recurring nature, thoughts of suicide appear in the form of vivid imagery and daydreaming's, initially bringing relief to adverse feelings but eventually becoming conditioned and all-consuming. Rather than a wonderment, they are experienced as intrusive thoughts by people struggling to make meaning of their occurrence. When conciliating the presence of unwanted thoughts, users express intricate relations to wishing or not to die, as well as varying perceptions of control over actions or fear of suicidal behavior.

Discussion

With an innovative application of big qualitative data into phenomenological analysis, this study contributes to an initial characterization of suicidal thoughts, uncovering findings that are not contemplated into current conceptualizations of suicidality. The analysis is limited by a restricted context of posts and unknown demographics, and further research with clinical interviews is warranted for in-depth exploration of suicidal thoughts.

Safety plan use and suicide-related coping in a sample of Australian online help-seekers

BACKGROUND

Suicide safety plans can improve suicide-related coping skills and reduce suicidal thoughts and behaviours (STBs). However, little is known about their use and impact outside of treatment settings, where most suicidal crises will occur. The current study explored the prevalence of safety plan use among an online sample of help-seekers with lifetime STBs, and whether STBs and suicide-related coping differed between those with and without safety plans. An exploratory aim was to investigate barriers to safety plan use.

METHOD

Participants (N = 1251) completed an online, anonymous survey at a mental health support website (Beyond Blue). The survey measured lifetime STBs, past-month suicidal ideation, suicide-related coping, help-seeking intentions and behaviour.

RESULTS

Despite high levels of past-month suicidal ideation and past-year help-seeking, most participants (89.5 %) did not have a safety plan, and most of those were not familiar with the concept (70.5 %). Participants with safety plans reported a higher rate of past suicide attempts, but higher suicide-related coping and help-seeking behaviour. Among participants without safety plans, negative attitudes toward safety planning were positively associated with suicidal ideation and negatively associated with suicide-related coping.

LIMITATIONS

Participants were primarily female, English-speaking visitors to a mental health support website. Cross-sectional design precludes conclusions being drawn about safety planning effectiveness over time.

CONCLUSION

This study highlights the low prevalence of safety plan use among online help-seekers with lifetime STBs and the need to better promote safety planning as an intervention with autonomous benefits, including crisis preparedness and improved suicide-related coping skills.

Can #chatsafe support parents and carers beyond Australia? A qualitative study

BACKGROUND

Rates of self-harm and suicide are rising for young people globally and many implicate social media in this problem. To address this concern and to increase the confidence of adults to communicate safely about suicide and social media with young people, the #chatsafe Guide for Parents and Carers was developed in Australia. With significant uptake of the resource among Australian adults, the aim of the current study was to update and contextualise the #chatsafe Guide for Parents and Carers for audiences in 15 countries globally. To improve the relevance of this resource for parents and carers in these countries, the present study sought to understand the concerns held by parents, carers and suicide prevention professionals around the world about these topics and to explore the extent to which a resource such as #chatsafe would be helpful within their communities.

METHODS

Seven focus groups were conducted via Zoom with parents, carers and suicide prevention professionals (n = 40) from 15 countries. Transcribed data were coded and thematically analysed using both inductive and deductive processes.

RESULTS

Six themes are reported: (1) Two scary 'S' words; (2) Country and culture impact who talks (or is silent) about self-harm and suicide; (3) The need for a protective social ecosystem; (4) #chatsafe is a tool that can help parents, carers and young people worldwide; (5) #chatsafe should consider local context and end users to improve its relevance for parents and carers worldwide; and (6) A range of marketing and dissemination strategies are needed to reach adults with #chatsafe information. Findings of this study informed the update and contextualisation of the #chatsafe Guide for Parents and Carers for adult audiences in 15 countries.

CONCLUSIONS

The findings from this study underscore a universal need for psychoeducation initiatives that provide adults with the skills and knowledge to support the mental health of young people, both online and offline, and that resources like #chastafe can play an important role in providing reliable information about these topics to adults across a range of cultures and contexts.

Suicide-Specific Cognitions and Suicidal Behavior in U.S. Military Veterans

BACKGROUND

U.S. military veterans may be reluctant to disclose suicidal thoughts and behaviors. Suicide-specific cognitions, which generally avoid direct mention of suicide, may be reliable indicators of risk among those reluctant to disclose such thoughts and behaviors.

METHODS

Data from a population-based, cross-sectional study of 2,430 U.S. military veterans were analyzed to examine the associations between the Brief Suicide Cognitions Scale (B-SCS), suicidal ideation, and suicide planning.

RESULTS

After adjusting for age, sex, number of adverse childhood experiences, cumulative trauma burden, depressive symptom severity, and lifetime history of suicide attempt, total scores on the B-SCS (excluding the item mentioning suicide) were uniquely associated with suicidal ideation (odds ratio [OR] = 1.23, 95% confidence interval [CI] = 1.15-1.32) and suicide planning (OR = 1.27, 95%CI = 1.18-1.37). Exploratory post-hoc analyses revealed that difficulties with solving and coping with one's problems were uniquely linked to these outcomes.

CONCLUSIONS

Assessment of suicide-specific cognitions may help to enhance suicide detection and prevention in veterans, especially in those who may not directly disclose thoughts of suicide. Intervention efforts to bolster perceived deficits in coping and problem-solving may help mitigate suicide risk in this population.

Polygenic risk for suicide attempt is associated with lifetime suicide attempt in US soldiers independent of parental risk

BACKGROUND

Suicide is a leading cause of death worldwide. Whereas some studies have suggested that a direct measure of common genetic liability for suicide attempts (SA), captured by a polygenic risk score for SA (SA-PRS), explains risk independent of parental history, further confirmation would be useful. Even more unsettled is the extent to which SA-PRS is associated with lifetime non-suicidal self-injury (NSSI).

METHODS

We used summary statistics from the largest available GWAS study of SA to generate SA-PRS for two non-overlapping cohorts of soldiers of European ancestry. These were tested in multivariable models that included parental major depressive disorder (MDD) and parental SA.

RESULTS

In the first cohort, 417 (6.3 %) of 6573 soldiers reported lifetime SA and 1195 (18.2 %) reported lifetime NSSI. In a multivariable model that included parental history of MDD and parental history of SA, SA-PRS remained significantly associated with lifetime SA [aOR = 1.26, 95%CI:1.13-1.39, p < 0.001] per standardized unit SA-PRS]. In the second cohort, 204 (4.2 %) of 4900 soldiers reported lifetime SA, and 299 (6.1 %) reported lifetime NSSI. In a multivariable model that included parental history of MDD and parental history of SA, SA-PRS remained significantly associated with lifetime SA [aOR = 1.20, 95%CI:1.04-1.38, p = 0.014]. A combined analysis of both cohorts yielded similar results. In neither cohort or in the combined analysis was SA-PRS significantly associated with NSSI.

CONCLUSIONS

PRS for SA conveys information about likelihood of lifetime SA (but not NSSI, demonstrating specificity), independent of self-reported parental history of MDD and parental history of SA.

LIMITATIONS

At present, the magnitude of effects is small and would not be immediately useful for clinical decision-making or risk-stratified prevention initiatives, but this may be expected to improve with further iterations. Also critical will be the extension of these findings to more diverse populations.

Neurological, Metabolic, and Psychopathological Correlates of Lifetime Suicidal Behaviour in Major Depressive Disorder without Current Suicide Ideation

INTRODUCTION

Suicidal behaviour (SB) has a complex aetiology. Although suicidal ideation (SI) is considered the most important risk factor for future attempts, many people who engage in SB do not report it.

METHODS

We investigated neurological, metabolic, and psychopathological correlates of lifetime SB in two independent groups of patients with major depression (sample 1: n = 230; age: 18-65 years; sample 2: n = 258; age >60 years) who did not report SI during an index episode.

RESULTS

Among adults (sample 1), SB was reported by 141 subjects (58.7%) and severe SB by 33 (15%). After controlling for interactions, four risk factors for SB emerged: male gender (OR 2.55; 95% CI: 1.06-6.12), negative self-perception (OR 1.76; 95% CI: 1.08-2.87), subthreshold hypomania (OR 4.50; 95% CI: 1.57-12.85), and sexual abuse (OR 3.09; 95% CI: 1.28-7.48). The presence of at least two of these factors had the best accuracy in predicting SB: sensitivity = 57.6% (39.2-74.5); specificity = 75.1% (68.5-82.0); PPV = 27.9% (20.9-37.2); NPV = 91.4% (87.6-94.1). In older patients (sample 2), 23 subjects (9%) reported previous suicide attempts, which were characterized by earlier onset (25 years: OR 0.95: 0.92-0.98), impaired verbal performance (verbal fluency: OR 0.95: 0.89-0.99), higher HDL cholesterol levels (OR 1.04: 1.00-1.07) and more dyskinesias (OR 2.86: 1.22-6.70).

CONCLUSION

Our findings suggest that SB is common in major depressive disorder, even when SI is not reported. In these individuals it is feasible and recommended to investigate both psychiatric and organic risk factors. The predictive power of models excluding SI is comparable to that of models including SI.

Digital safety plan effectiveness and use: Findings from a three-month longitudinal study

Few studies have examined the effectiveness of self-guided smartphone apps for suicide safety planning, despite their increasing use. Participants (n = 610) were self-selected users of the Beyond Now suicide prevention safety planning app with a history of suicidal thoughts and behaviours. Surveys were completed (baseline, one and three months), safety plan content and app usage data was shared. Repeated-measures ANOVAs examined changes in suicidal ideation and suicide-related coping over three months. Multiple regression models were used to predict suicidal ideation and suicide-related coping at one- and three-month follow-ups with plan-related variables: perceived usefulness, personalised content, app use time and co-authoring of the plan with a third party. Significant reductions in suicidal ideation and increases in suicide-related coping were found over three months. Higher suicide-related coping at three months predicted lower suicidal ideation. Higher perceived usefulness and personalised content at three months were associated with higher suicide-related coping, but not suicidal ideation. App use time and co-authoring were not significantly related to suicidal ideation or suicide-related coping. Practitioners should empower clients to create safety plans with personalised (not generic) strategies that a client perceives to be useful. Such plans may strengthen beliefs about coping with suicidal ideation, which in turn reduces suicidal ideation over time.

International and domestic university students' mental health over the course of the COVID-19 pandemic in Germany: Comparison between 2020, 2021, and 2022

BACKGROUND

The COVID-19 pandemic affected university students' mental health worldwide. International students were presenting high levels of stress, anxiety, and depressive symptoms before the pandemic. This study aimed to investigate (i) differences between various timepoints of the COVID-19 pandemic (2020, 2021, and 2022) in mental health outcomes and social and emotional aspects in domestic and international students, separately, (ii) differences between international and domestic students between the three timepoints on mental health outcomes and social and emotional aspects, and (iii) possible moderation effects of timepoints on mental health outcomes and social and emotional aspects of domestic and international students.

MATERIAL AND METHODS

Data from three cross-sectional anonymous online surveys conducted in German universities were analyzed and compared. Data were collected in 2020, 2021, and 2022, respectively, with a total N = 14,498. Depressive symptoms, hazardous alcohol use, social support, self-efficacy, resilience, perceived stress, and loneliness were assessed through standardized self-report instruments. Differences between domestic and international students in mental health outcomes, and social and emotional aspects across three timepoints were assessed with one-way and two-way ANCOVAs.

RESULTS

Regardless of the timepoint, international students presented more depressive symptoms and perceived stress, lower perceived social support and resilience, but higher levels of self-efficacy and less alcohol consumption compared to domestic students. A significant interaction effect between timepoint and student status emerged only for loneliness.

CONCLUSIONS

International students generally presented poorer mental health outcomes than domestic students. Mental health care and prevention such as low-threshold, online counseling should address university students, especially international students.

The Relationship between Childhood Abuse and Suicidal Ideation among Chinese College Students: The Mediating Role of Core Self-Evaluation and Negative Emotions

Childhood abuse is a significant risk factor for suicidal ideation. However, the underlying mediation mechanism necessitates further exploration. This study investigated the mediating role of core self-evaluation and negative emotions in the relationship between childhood abuse and suicide ideation in young adults. A sample of 3103 college students from 11 universities across 8 provinces in China was analyzed. Childhood abuse, core self-evaluation, negative emotions, and suicidal ideation were assessed using the Childhood Trauma Questionnaire (CTQ-CF), Core Self-Evaluation Scale, Affect Scale, and Beck Suicidal Ideation Scale (BSI-CV), respectively. Data analysis was conducted using SPSS 19.0 and SPSS Macro Process. We found that high scores for childhood abuse were associated with elevated levels of suicidal ideation, whereas low scores for core self-evaluation were closely linked to heightened levels of negative emotions and suicidal ideation. Furthermore, core self-evaluation and negative emotions mediated the relationship between childhood abuse and suicidal ideation through three significant paths. The results demonstrate that childhood abuse can directly impact suicidal ideation in young adulthood and indirectly influence suicidal ideation by affecting core self-evaluation and negative emotions. They suggest that addressing core self-evaluation and negative emotions in individuals who have experienced childhood abuse may help prevent or treat suicidal ideation.

Firearm use risk factors and access restriction among suicide decedents age 75 and older who disclosed their suicidal intent

Background and aims

A majority of older adult suicide decedents used firearms. In this study, we focused on suicide decedents age 75+ who disclosed their suicidal intent within a month of their injury/death to examine demographic and clinical characteristics associated with firearm use and firearm access restriction attempts by their family members.

Methods

The 2017-2019 U.S. National Violent Death Reporting System provided data (N = 1,734 suicidal intent disclosers; 1,476 males and 258 females; 21.4% of decedents age 75+). Generalized linear model (GLM) for a Poisson distribution with a log link was used to examine firearm use risk factors. Firearm access restriction attempts by decedents' family members were examined based on coroner/medical examiner and law enforcement (CME/LE) reports.

Results

Nearly three quarters of disclosers disclosed their intent to family members, and 82.9% of males and 27.5% of females used firearms. GLM results showed males, non-Hispanic white people, and residents in the South and West regions had higher likelihood of firearm use. CME/LE reports of 140 out of 1,294 firearm decedents included narratives related to firearm restriction attempts or lack thereof. Firearm access restrictions were not attempted in 65 cases because family members did not take suicidal intent disclosure seriously or because decedents promised no self-harm. Partial or complete removal of firearms in 75 cases were not effective as decedents had hidden a firearm or purchased a new one. Others used different lethal methods.

Implications

The findings indicate a need for: (a) training family members of older adults who are at risk of suicide in effective means safety/access restriction and strategies to prevent means substitution; (b) more comprehensive legislative reforms reducing access to firearms by those at risk of suicide; and (c) more comfort and palliative care and counseling for psychosocial risk factors.

Profiles, Transitions, and Resilience Factors of Suicide Risk in Early Chinese Adolescents

As a severe public health concern directly endangering life safety, adolescent suicide has been extensively investigated in variable-centered studies. However, gaps remain in the knowledge of heterogeneous suicide risk patterns and their developmental nature. Additionally, little is known about protective factors associated with suicide risk patterns and changes. This study applied person-centered approaches to explore suicide risk profiles and transitions over time in early Chinese adolescents, along with their protective factors. A total of 1518 junior high school students (49.6% girls, Mage = 13.57, SD = 0.75) participated in two surveys within a 12-month interval. Latent Profile Analysis and Latent Transition Analysis were used to model the profiles and transitions of suicide risk. Three risk profiles were identified at both time points: low risk profile (73.9, 78.3%), medium risk-high threat profile (16.2, 10.2%), and high risk profile (9.9, 10.2%). Low risk profile was stable, while medium risk-high threat and high risk profiles showed great transitions over 12 months. Sense of control, meaning in life, and regulatory emotional self-efficacy served as protective factors against suicide risk profiles and transitions. Findings underscore the importance of comprehensively illustrating suicide risk states from multiple aspects, as well as understanding the fluid nature of transitions between different risk states. Prevention and intervention strategies aimed at enhancing resilience, such as increasing sense of control, perceived meaningfulness, and belief in emotional regulation, may contribute to reducing the risk of suicide among adolescents.

Tinnitus, Suicide, and Suicidal Ideation: A Scoping Review of Primary Research

Tinnitus (the perception of sound in the absence of any corresponding external source) is highly prevalent and can be distressing. There are unanswered questions about how tinnitus, suicidal thoughts, and suicidal behaviours co-occur and interact. To establish the extent of scientific literature, this scoping review catalogued primary reports addressing the associations between tinnitus, suicidal ideation, attempted suicide, and death by suicide. We searched OvidSP, Medline, EMBASE, PsycINFO, CINAHL, Google Scholar, EThoS, and ProQuest for all studies and case reports on ideation and/or attempted and/or completed suicide in the context of tinnitus. Twenty-three studies were included, and data were charted according to study type. Several epidemiological and other observational studies gave evidence of risk factors and an association between suicidal ideation, suicidal behaviour, and tinnitus. However, there was no evidence of the direction of causality. Qualitative studies are indicated to explore the patient's experience and understand the dynamics of any interaction between tinnitus and suicidal thoughts and behaviours. A theory-informed model of tinnitus and suicide needs to be developed to inform the development of interventions and how tinnitus patients are supported clinically.

Validation of the German Version of the P4 Suicidality Tool

For general practitioners (GPs), it may be challenging to assess suicidal ideation (SI) in patients. Although promising instruments exist for the use in primary care, only a few have been validated in German. The objectives of this study were to examine the validity of the brief P4 screener for assessing SI in a cross-sectional study including outpatients. Inclusion criteria were a PHQ-9 score ≥ 10 or an affirmative answer to its SI item. Construct validity of the P4 was examined by comparison with the four-item Suicide Behaviors Questionnaire-Revised (SBQ-R), the PHQ-9 (convergent), and the positive mental health (PMH) scale (divergent). The study sample included 223 patients (mean age 47.61 ± 15 years; 61.9% women) from 20 primary care practices (104 patients) and 10 psychiatric/psychotherapeutic clinics (119 patients). The first three items of the P4 correlate positively with most of the four items of the reference standard SBQ-R (convergent validity); the fourth item of the P4 (preventive factors) correlates significantly with the PMH scale. The most common preventive factor (67%) is family or friends. The German P4 screener can be used to assess SI in outpatient care. It explores preventive or protective factors of suicide, which may support the GP's decision on treatment. We recommend a further clinical interview for patients flagged by P4 assessment in order to more formally assess suicidal risk.