Classification of attempted suicide by cluster analysis: A study of 888 suicide attempters presenting to the emergency department

Suicidal ambivalence: A scoping review

BACKGROUND

Suicidal ambivalence is considered a characteristic condition of suicidal individuals. At the same time, there is a lack of a uniform definition, conception and assessment of suicidal ambivalence. On this background, the current scoping review aims to explore the extent, range, and nature of research activity on suicidal ambivalence and to summarize research findings.

METHODS

A systematic literature search was conducted in four different databases (PubMed, Psychinfo, Web of Science, and Google Scholar) using an array of search terms (e.g., ambivalence, internal suicide debate, reasons for living and reasons for dying, wish to live and wish to die).

RESULTS

In total, 28 articles published between 1977 and 2023 were included in the scoping review. The study situation lacks a clear definition, conceptualization and operationalization of suicidal ambivalence. Nonetheless, suicidal ambivalence is a common experience in persons contemplating suicide and suicidal ambivalence seems to be present before, during and after a suicide attempt. Suicidal ambivalence is associated with diverse markers of negative/positive mental health as well as suicidal ideation and behavior.

CONCLUSION

Results point to the relevance of suicidal ambivalence. At the same time, there are large gaps in knowledge about the development, impact and therapeutic responsiveness of suicidal ambivalence.

Specificity, frequency, and intent: Multiple characteristics of adolescents' suicide plan correlate with their history of suicidal behavior

BACKGROUND

Suicide plans (SP) can be a common precipitant to suicidal behavior (SB) during adolescence, and SPs can vary in how specific they are, how frequently they are thought about, and how strongly they are intended to be enacted. To date, we have limited understanding of how discrete SP characteristics (i.e., specificity, frequency, and intent to act) present among adolescents, and whether they relate to SB. In the current study, we investigated SP characteristics and their association with SB history among adolescents who had previously considered suicide.

METHODS

Participants were 142 community-based adolescents (14-19 years; M = 17.6, SD = 1.4) who reported a history of suicidal ideation. Adolescents provided responses pertaining to their SP history, SP characteristics, and SB history, via the Self-Injurious Thoughts and Behaviors Interview-Revised (SITBI-R).

RESULTS

Greater specificity, frequency, and intent were each associated with modestly increased odds of reporting an SB history. The associations between plan specificity and SB history, as well as between frequency of thinking about one's SP and SB history, were mediated by adolescents' intent to act on their SP.

CONCLUSIONS

It may not only be whether, but how, adolescents plan for suicide that relates to their tendency to engage in SB.

Differences in acute outcomes of suicide patients by psychiatric disorder: Retrospective observational study

Suicide is a social problem with significant economic losses, the victims of which are mainly from the productive population. There are numerous reports on the assessment of suicide risk, but most focus on long-term management. Therefore, factors influencing the severity of physical impairments in the acute phase and the prognosis of suicidal patients have not been sufficiently investigated. This is a single-center retrospective observational study. We collected data on suicidal patients admitted to our emergency department. The effect of age, gender, psychiatric history, method of suicide, alcohol consumption, and hospital admission on the outcome of suicide was assessed. Outcomes were assessed using the hospital mortality scale and the cerebral performance category scale for in-hospital mortality within 28 days. Methods of suicide with a high mortality rate (hanging, jumping, carbon monoxide poisoning, and burns) were defined as lethal methods. A detailed risk assessment of outcomes was performed for patients with schizophrenia, mood disorders, and somatoform disorders. We identified 340 suicide patients from computerized medical records and analyzed 322 records without missing data. The non-survivor group predominantly comprised older adults, men, and patients without a history of psychiatric treatment. Contrastingly, more patients drank alcohol before suicide in the survivor group. In the subgroup analysis, patients with schizophrenia had unfavorable neurological outcomes. Patients with mood disorders had worse in-hospital mortality than other psychiatric patients, as did patients who chose the lethal method. By disease, patients with stress-related and somatoform disorders tended to have higher survival rates, although their psychiatric hospitalization rates were lower. Conversely, patients with mood disorders had a higher rate of hospital visits but a lower survival rate. The results suggest that usual outpatient treatment alone may not be sufficient to reduce suicide mortality in patients with mood disorders who are considered to be at high risk of suicide.

Examining associations between suicidal desire, implicit fearlessness about death, and lifetime frequency of suicide attempts

INTRODUCTION

Suicide models propose that the capability for suicide, such as fearlessness about death (FAD), is necessary for the transition from suicidal desire to a suicide attempt. Most studies have relied on self-report methods to assess FAD. However, this research has produced equivocal results. As individuals may have limited awareness of learned or pre-existing associations between fearlessness and death, implicit measures of FAD hold promise. This study used a novel implicit association test (IAT), the IAT-FAD, to examine associations between suicidal desire, implicit FAD, and lifetime suicide attempt frequency.

METHODS

Patients in residential substance use treatment (N = 75), a population with increased suicide risk and exposure to painful and provocative events, completed the IAT-FAD and assessments of suicidal desire and past suicide attempts.

RESULTS

Implicit FAD moderated the association between suicidal desire and lifetime frequency of suicide attempts associated with an intent to die and requiring medical attention (although not ambivalent suicide attempts). Suicidal desire related to medically attended suicide attempts only at high implicit FAD levels, and to suicide attempts with a clear intent to die only at high or mean implicit FAD levels.

CONCLUSION

Results provide initial support for the relevance of implicit measures of FAD for understanding suicide risk.

What distinguishes high and low-lethality suicide attempts in older adults? A systematic review and meta-analysis

Those making suicide attempts with highly lethal medical consequences are arguably the best proxy for those who die by suicide and represent a qualitatively different population from those making lower lethality attempts. Different factors influence the likelihood of a suicide attempt occurring and the lethality of that attempt. Both are important dimensions of risk. Older adults represent a distinct group in suicide research with unique risk factors that influence the lethality of their suicide attempts. This systematic review and meta-analysis summarises factors distinguishing those making high and low-lethality suicide attempts in older adulthood. Databases PsycINFO, PubMed (MEDLINE), Embase and CINAHL were systematically searched with seven of 1182 unique records included. Random effects meta-analyses were conducted on 18 variables in addition to a narrative synthesis regarding executive function. Only increased suicidal intent and planning meaningfully distinguished high from low-lethality attempters in meta-analyses. A large effect size was additionally observed for white ethnicity. Diminished alcohol use disorder prevalence and depression severity, and greater cognitive impairment, may be associated with high lethality attempters but further research is needed. Age and gender were not associated with lethality, contrary to adult populations. A narrative synthesis of studies exploring differences in executive functioning suggested high-lethality attempters were less likely to impulsively act on suicidal urges, allowing them to better plan suicide attempts that are more lethal, and are less likely to alter suicidal plans. Key limitations were that meta-analyses were underpowered to detect small effect sizes, and samples were largely white and limited to the USA.

A Psychometric Pilot Study Examining the Functions of Suicidal Communications Using IRT and Factor Analysis

BACKGROUND

Suicide prevention, an important public health issue, relies on suicidal communications to identify and intervene with those at risk. Scant research tests explicit theories of suicidal communication impeding applications to prevention science. The current study pilots a new measure assessing the functions of suicidal communications using factor analysis and item response theory.

METHODS

MTurk workers (n = 898) completed an anonymous survey. The original scale included 35 items refined using exploratory and confirmatory factor analysis, bifactor modeling, and item response theory.

RESULTS

The initial EFA identified a two-correlated-factor solution. The two-correlated-factor and unidimensional models yielded a poor fit. A bifactor model yielded a borderline to acceptable fit. The final four items were identified using a bifactor model and item response theory graded response models capturing ambivalence resolution defined as behaviors aimed to aid in suicide decision making. The final model yielded an excellent fit: 𝝌²(2) = 1.81, CFI (1.00), TLI (1.00), RMSEA (0.00), and SRMR (0.01).

CONCLUSIONS

There may be one function of suicidal communications. Disclosure may elicit connection and reasons for living that serve as barriers to suicide and resolve ambivalence. Key limitations include convenience sampling and limited validity measures. Future research should partner with participants to improve scale and theory development efforts.

Associating factors of suicide and repetition following self-harm: A systematic review and meta-analysis of longitudinal studies

BACKGROUND

Longitudinal evidence for sociodemographic and clinic factors deviating risk for suicide and repetition following SH (self-harm) varied greatly.

METHODS

A comprehensive search of PubMed, Web of Science, EMBASE, and PsycINFO was conducted from January 1st, 2010 to April 5th, 2022. Longitudinal studies focusing on examining associating factors for suicide and repetition following SH were included. PROSPERO registration CRD42021248695.

FINDINGS

The present meta-analysis synthesized data from 62 studies published from Jan. 1st, 2010. The associating factors of SH repetition included female gender (RR, 95%CI: 1.11, 1.04-1.18, I²=82.8%), the elderly (compared with adolescents and young adults, RR, 95%CI: 0.67, 0.52-0.87, I²=86.3%), multiple episodes of SH (RR, 95%CI: 1.97, 1.51-2.57, I²=94.3%), diagnosis (RR, 95%CI: 1.60, 1.27-2.02, I²=92.7%) and treatment (RR, 95%CI: 1.59, 1.40-1.80, I²=93.3%) of psychiatric disorder. Male gender (RR, 95%CI: 2.03, 1.80-2.28, I²=83.8%), middle-aged adults (compared with adolescents and young adults, RR, 95%CI: 2.40, 1.87-3.08, I²=74.4%), the elderly (compared with adolescents and young adults, RR, 95%CI: 4.38, 2.98-6.44, I²=76.8%), physical illness (RR, 95%CI: 1.95, 1.56-2.43, I²=0), multiple episodes of SH (RR, 95%CI: 2.02, 1.58-2.58, I²=87.4%), diagnosis (RR, 95%CI: 2.13, 1.67-2.71, I²=90.9%) and treatment (RR, 95%CI: 1.36, 1.16-1.58, I²=58.6%) of psychiatric disorder were associated with increased risk of suicide following SH.

INTERPRETATION

Due to the substantial heterogeneity for clinic factors of suicide and repetition following SH, these results need to be interpreted with caution. Clinics should pay more attention to the cases with SH repetition, especially with poor physical and psychiatric conditions.

FUNDING

This work was supported by National Natural Science Foundation of China (NSFC) [No: 82103954; 30972527; 81573233].

Challenging the Myth of "Attention Seeking" Women with Suicidality: A Grounded Theory Study about Applying Counter-Pressure to Manage System Entrapment

Some women who express suicidal intent and engage in non-lethal self-harm perceive that nurses and other health care workers label them as attention-seeking and manipulative. An understanding of women's help-seeking behaviors that challenges suicide myths is presented. The purpose of this study was to examine help-seeking for suicidality in women with histories of intimate partner violence using a multiple qualitative research design of grounded theory and photovoice. Women from New Brunswick, Canada, over the age of 19 who left an abusive partner (n = 32) were interviewed and seven local women from this sample participated in five photovoice group sessions where they collectively examined self-generated photos of their experiences. Transcripts of the interviews and group sessions were analyzed using the constant comparative approach, yielding a theoretical rendering of women's help seeking. Results include a process of Applying Counter-Pressure as a way of pushing back against System Entrapment, or the sense of being invalidated and dehumanized by health care providers with the goal to Feel Human. Findings provide an understanding of women's behavior when seeking help for suicidality and may reduce nurses' assumptions and judgments when providing care. Trauma and violence informed care provides a framework from which to guide interventions that acknowledge the role of past and ongoing trauma in women's lives, supporting nurses' capacity to be validating and helping women to continue living.

Characteristics of suicide attempts associated with lethality and method: A latent class analysis of the Military Suicide Research Consortium

While suicide prevention is a national priority, particularly among service members and veterans (SMVs), understanding of suicide-related outcomes remains poor. Person-centered approaches (e.g., latent class analysis) have promise to identify unique risk profiles and subgroups in the larger population. The current study identified latent subgroups characterized by prior self-directed violence history and proximal risk factors for suicide among suicide attempt survivors, and compared subgroups on demographics and most-lethal attempt characteristics. Participants included civilians and SMVs reporting lifetime suicide attempt(s) (n = 2643) from the Military Suicide Research Consortium. Two classes emerged from Common Data Elements: suicide attempt and non-suicidal self-injury frequency, suicide attempt method, perceived likelihood of future suicide, suicide disclosure, suicide intent, and perceived and actual lethality of attempt. A Higher-Risk History class was characterized by greater intent to die, certainty about attempt fatality and method lethality, belief injury would be medically unfixable, and likelihood of prior non-suicidal self-injury. A Lower-Risk History class was characterized by greater ambivalence toward death and methods. Higher-Risk class members were more likely to be male, older, SMVs, have less formal education, use firearms as most-lethal attempt method, and require a higher degree of medical attention. Lower-Risk class members were more likely to be female, civilian, use cutting as most-lethal attempt method, and require less medical attention for attempts. Findings have implications for risk assessments and highlight the importance of subjective perceptions about suicidal behavior. Further investigation of real-time individual-level is necessary, especially for SMVs who may be at greatest risk for potentially lethal suicidal behavior.

Hospital presenting suicidal ideation: A systematic review

BACKGROUND

Research indicates that the emergency department is the primary setting for people to present with suicidal ideation. Attempting to provide interventions for this population depends greatly on understanding their needs and life circumstances at the time of presentation to services, therefore enabling more appropriate treatment pathways and services to be provided.

AIM

This review aims to collate, evaluate and synthesize the empirical research focused on the population of people presenting to hospital settings with suicidal ideation.

METHOD

A systematic literature search was performed. Articles that met a specified set of inclusion criteria including participants being over 18, not being admitted to hospital and presenting to an emergency department setting underwent a quality assessment and data analysis. The quality assessment used was the EPHPP Quality Assessment Tool for Quantitative Studies (Thomas et al., 2004).

RESULTS

Twenty-seven articles were included in the review. Studies were quantitative and of reasonable methodological quality (Thomas et al., 2004). The literature was characterized by demographic information, mental health factors associated with the presentation to hospital and treatment pathways or outcomes reported. The reviewed research showed that people presenting to emergency departments with suicidal ideation were varying in age, gender, ethnic background and socio-economic status (SES). Large proportions of studies reported psychosocial factors alongside interpersonal struggles as the main presenting reason. The review highlights large variability across these factors. Mental health diagnosis was common, previous suicide attempt was a risk factor, and treatment pathways were unclear. The review identifies the outstanding gaps and weaknesses in this literature as well as areas in need of future research.

CONCLUSIONS

In conclusion, the review highlights the prevalence of people reporting interpersonal factors as the reason for suicidal ideation and not mental health disorders or diagnosis. Despite this, no mention of trauma or life stories was made in any study assessing this population. Despite a large variation across studies making synthesis difficult, data proves clinically relevant and informative for future practice and guidance on areas needing further research.

Risk Assessment of Self-Injurious Behavior and Suicide Presentation in the Emergency Department: An Integrative Review

INTRODUCTION

Globally, there is a lack of clarity regarding the best practice to distinguish patients at the highest risk of suicide. This review explores the use of risk assessment tools in emergency departments to identify patients at high risk of repeat self-harm, suicide attempts, or death by suicide.

METHODS

The review question ("Does the use of risk assessment tools in emergency departments identify patients at high risk of repeat self-harm, suicide attempts, or death by suicide?") focused on exposure and outcome. Studies of any design were included. The Preferred Reporting Items for Systematic Reviews and Meta-Analysis guidelines were used. Study characteristics and concepts were extracted, compared, and verified. An integrative approach was used for reporting through narrative synthesis.

RESULTS

Nine studies were identified for inclusion. Two risk assessment tools were found to have good predictive ability for suicide ideation and self-harm. Three had modest prediction of patient disposition, but in one study, the clinical impression of nurses had higher predictive ability. One tool showed modest predictive ability for patients requiring admission.

DISCUSSION

This review found no strong evidence to indicate that any particular risk tool has a superior predictive ability to identify repeat self-harm, suicide attempts, or death by suicide. Best practice lacks clarity to determine patients at highest risk of suicide, but the use of risk assessment tools has been recommended. Nevertheless, such tools should not be used in isolation from clinical judgment and experience to evaluate patients at risk. Education and training to augment risk assessment within the emergency department are recommended.

Internal consistency and concurrent validity of self-report components of a new instrument for the assessment of suicidality, the Suicide Ideation and Behavior Assessment Tool (SIBAT)

This study aimed to assess the internal consistency of self-report components of the Suicide Ideation and Behavior Assessment Tool (SIBAT) and validate it with relevant elements of the Mini International Neuropsychiatric Interview (MINI). The SIBAT is a newly developed instrument for the evaluation of suicidality. In this study, we invited university students and trainees participating in a study of addictions to complete the self-report component of the SIBAT as an add-on study. We evaluated the internal consistency of the self-report component of the SIBAT and validated it against the suicidality component of the MINI. Data were analysed using both complete case analysis and multiple imputation. SIBAT data were collected for 394 participants, 314 of whom had also completed the MINI. The internal consistency of modules 2, 3, and 5 of the SIBAT was high. Each item from module 5 had a statistically significant association with the corresponding item from the MINI. The sum of scores from modules 2 and 3 had a moderate correlation with the assessment of suicide risk determined by the MINI, and a strong correlation with the total score of SIBAT module 5. The completion median time of modules 2, 3 and 5 was 14.3 min.

Emotion and cognition in personal and collective work-identity formation: variable- and person-oriented analyses

The aim of this study was to investigate emotional and cognitive processes involved in the formation of personal and collective work-identity by variable- and person-oriented analyses. A digitized questionnaire was answered by 768 participants. In line with an autobiographical (personal) memory view, we showed that: (1) emotional processes positively predicted cognitive processes (variable-oriented analyses), and (2) emotional profile had an effect on cognitive processes (person-oriented analyses), with regard to personal work-identity formation. Regarding collective work-identity formation, and in line with a social-identity and self-categorization perspective, we showed that: (1) cognitive processes positively predicted emotional processes (variable-oriented analyses), and (2) cognitive profile had an effect on emotional processes (person-oriented analyses). Our results indicate that emotion and cognition play different roles in personal- and collective work-identity formation; additionally, suggesting that the theoretical views of both personal and social psychology as well as analyses at different levels should be involved in order to gain a deeper understanding of the phenomenon of people-work bonding.

The Psychological Pathway to Suicide Attempts: A Strategy of Control Without Awareness

Objectives

This paper aims to identify potential areas for refinement in existing theoretical models of suicide, and introduce a new integrative theoretical framework for understanding suicide, that could inform such refinements.

Methods

Literature on existing theoretical models of suicide and how they contribute to understanding psychological processes involved in suicide was evaluated in a narrative review. This involved identifying psychological processes associated with suicide. Current understanding of these processes is discussed, and suggestions for integration of the existing literature are offered.

Results

Existing approaches to understanding suicide have advanced the current knowledge of suicide in various ways. They have guided valuable research in the following areas: motivations for suicide and the psychological distress which influences suicide attempts; ambivalence about suicide; suicidal individuals’ focus of attention; and ways in which individuals who contemplate suicide differ from individuals who attempt suicide. We outline a new theoretical framework as a means to integrating all of these concepts into the three principles of control, conflict, and awareness. Within this framework, suicide is regarded as occurring due to a long standing conflict between an individual’s personal goals, culminating in an episode of acute loss of control. The new framework posits that the individual then strives to regain control through the means of suicide because of a narrowed awareness of consequences of their actions on other valued goals. This psychological mechanism of limited awareness is posited to be the common pathway by which individuals make a suicide attempt, regardless of which risk factors are present.

Conclusion

This article introduces a theoretical framework that generates several hypotheses for future research, and focuses on psychological processes occurring during immediate crisis. One of the key hypotheses resulting from our predictions on how individuals progress from contemplating to attempting suicide will be tested in an ongoing program of research: Individuals who attempt suicide have a significantly reduced awareness of consequences of suicide, which would negatively impact on their important life goals, values, principles, or ideals, compared to individuals who contemplate suicide. Therapy guided by the new framework may be more flexible, immediate, and client-focused than other therapies for suicidal individuals.

Serum Fatty Acid Latent Classes Are Associated With Suicide in a Large Military Personnel Sample

OBJECTIVE

Fatty acids (FAs) are involved in the functioning of biological systems previously associated with suicidal behavior (eg, monoamine signaling and the immune system). We sought to determine (1) whether observed FA levels in a sample of military suicide decedents and living matched controls were consistent with latent classes having distinctive FA profiles and (2) whether those latent classes were associated with suicide and mental health diagnoses.

METHODS

Serum samples from 800 US military suicide decedents who died between 2002 and 2008 and 800 demographically matched living controls were selected at random from a large military serum repository and assayed for 22 different FAs. A latent class cluster analysis was performed using values of 6 FAs previously individually associated with suicide. Once the latent classes were identified, they were compared in terms of suicide decedent proportion, demographic variables, estimated FA enzyme activity, diagnoses, and mental health care usage.

RESULTS

A 6-latent class solution best characterized the dataset. Suicide decedents were less likely to belong to 2 of the classes and more likely to belong to 3 of the classes. The low-decedent classes differed from the high-decedent classes on 9 FAs and on estimated indices of activity for 3 FA enzymes: 14:0, 24:0, 18:1 n-9, 24:1 n-9, 22:5 n-3, 22:6 n-3, 20:2 n-6, 20:4 n-6, 22:5 n-6, elongation of very long chain fatty acids protein 1 (ELOVL1), ELOVL6, and Δ9 desaturase. The FA profiles of the latent classes were consistent with biological abnormalities previously associated with suicidal behavior.

CONCLUSIONS

This study suggests the utility of methods that simultaneously examine multiple FAs when trying to understand their relationship with suicide and psychiatric illness.

Attitudes towards suicide and risk factors for suicide attempts among university students in South Korea

BACKGROUND

In the new global socioeconomic development, suicidal deaths have increased which is progressively gaining more attention in the field of psychiatry, social work, psychology, and public health research. The present study aimed at examining the evidence for the attitudes towards suicide and risk factors for suicide attempts among university students in South Korea and suggested significant recommendations for future prevention programs and research.

METHOD

A study was conducted by reviewing recent publications and significant research journals published since 2000 related to the study objective, themes, and drawn broader perspectives and implications. The recent journal articles from PubMed, Global Health journal database, Google Scholar, MEDLINE, Academic Journals Database, WHO, and PsychInfo data sources were included. The study key terms were "suicide", "attitudes", "risk factors", "university students", & "South Korea".

RESULTS

The negative attitudes towards self, confusion of meaning in life, anxiety and stress about academic achievement, family problems, hopelessness, depression, and bipolar disorder were the main factors.

LIMITATIONS

We mainly included peer review journals in our study, but address the few relevant books and reports also.

CONCLUSIONS

The authors discussed important implications for future actions, including conducting relevant studies and regular collaborative discussions among responsible stakeholders.

Clustering suicides: A data-driven, exploratory machine learning approach

Methods of suicide have received considerable attention in suicide research. The common approach to differentiate methods of suicide is the classification into "violent" versus "non-violent" method. Interestingly, since the proposition of this dichotomous differentiation, no further efforts have been made to question the validity of such a classification of suicides. This study aimed to challenge the traditional separation into "violent" and "non-violent" suicides by generating a cluster analysis with a data-driven, machine learning approach. In a retrospective analysis, data on all officially confirmed suicides (N = 77,894) in Austria between 1970 and 2016 were assessed. Based on a defined distance metric between distributions of suicides over age group and month of the year, a standard hierarchical clustering method was performed with the five most frequent suicide methods. In cluster analysis, poisoning emerged as distinct from all other methods - both in the entire sample as well as in the male subsample. Violent suicides could be further divided into sub-clusters: hanging, shooting, and drowning on the one hand and jumping on the other hand. In the female sample, two different clusters were revealed - hanging and drowning on the one hand and jumping, poisoning, and shooting on the other. Our data-driven results in this large epidemiological study confirmed the traditional dichotomization of suicide methods into "violent" and "non-violent" methods, but on closer inspection "violent methods" can be further divided into sub-clusters and a different cluster pattern could be identified for women, requiring further research to support these refined suicide phenotypes.

Clinical Characteristics and Psychotropic Drug Prescription Patterns of Bipolar Disorder Patients with a History of Suicidal Attempts: Findings from the REAP-BD, Korea

Our study aimed to analyze the clinical characteristics and psychotropic prescription patterns of a history of suicide attempts in South Koreans with bipolar disorder (BD), by using only Korean data from the Research on Asian Psychotropic Prescription Pattern for Bipolar disorder. The patterns of clinical characteristics and psychotropic drug use were compared among 53 patients with a history of suicide attempts and 297 without this history; the potential effects of confounding variables were adjusted with binary logistic analyses for discrete variables and analyses of covariance for continuous variables. After adjusting the effects of age, sex, duration of illness, and enrollment as an outpatient, patients with a history of suicide attempts were characterized by a significantly more prevalent depressive episode, lower prevalent remission state, lower levels of hemoglobin, and more use of antidepressants, anxiolytics, and hypnotics compared to those without lifetime suicide attempt. The inability to plan goal-directed behavior may be an intervening factor in the relationship between suicide attempts and depression in BD. Relatively low hemoglobin levels can be associated with manic episodes in patients with a history of suicide attempts and the use of antidepressants, anxiolytics, or hypnotics can be associated with suicide attempts in BD patients.

Predicting Planned Suicide Attempts With the Columbia-Suicide Severity Rating Scale: A Subanalysis of the 2013 Korea National Suicide Survey on Emergency Department Visitors

Identifying predictors of planned suicide attempts (PSA) is critical because these are associated with grave consequences. Using data of suicide attempters visiting emergency departments, we investigated whether the Columbia-Suicide Severity Rating Scale (C-SSRS) subscales, by retrospectively evaluating ideation before an attempt, could predict the occurrence of PSA versus unplanned suicide attempts using logistic regression analyses. The severity subscale was used as a continuous (model A) and a categorical (model B) variable. In model A, higher scores on each subscale were associated with increased risk of PSA. In model B, the highest score on the severity subscale and a higher intensity subscale score predicted PSA. The severity and intensity subscales had areas under receiver operating curves of 0.712 and 0.688 with optimum cutoff points of 4/5 and 15/16, respectively. In addition, being aged 30 to 49 and 50 to 69 years, being male, interpersonal stress, and depressive and adjustment disorders increased PSA risk. The C-SSRS subscales, along with sociodemographic and clinical risk factors, can predict PSA.