Validity of the modular assessment of risk for imminent suicide in predicting short-term suicidality

Examining Suicide Crisis Syndrome as an Indirect Indicator of Suicide Risk in the Military Suicide Research Consortium's Common Data Elements

OBJECTIVE

The Suicide Crisis Syndrome (SCS) has accumulated support as an indicator of suicide risk in patient settings; however, it has not been evaluated in military/veteran populations. The present study tested the factorial structure, measurement invariance, latent mean differences, and incremental validity of a SCS proxy variable developed from the Military Suicide Research Consortium's (MSRC) Common Data Elements (CDE).

METHOD

A secondary data analysis of 6,556 adults (40.5% current service members, 27.0% veterans, 26.6% civilians) who participated in MSRC-funded studies was conducted. CDE items were selected to form a SCS proxy, which was tested in subsequent analyses.

RESULTS

A bifactor model exhibited superior model fit to alternative configurations. This model was partially invariant across those with differing histories of suicide and military service. Individuals with a history of suicidal ideation or attempts had more severe SCS symptoms than those without such history, and the SCS factor was incrementally related to lifetime suicide attempts and their characteristics above other relevant factors.

CONCLUSIONS

These findings provide evidence for the generalizability of the SCS to military service member and veteran populations, as well as the potential utility of proxy measures as an assessment tool in settings in which lengthy measures may be prohibitive.

Intentions to use mental health and suicide prevention resources among individuals with symptoms of the suicide crisis syndrome and/or suicidal ideation

INTRODUCTION

The suicide crisis syndrome (SCS) has demonstrated efficacy in predicting suicide attempts, showing potential utility in detecting at-risk individuals who may not be willing to disclose suicidal ideation (SI). The present international study examined differences in intentions to utilize mental health and suicide prevention resources among community-based adults with varying suicide risk (i.e., presence/absence of SCS and/or SI).

METHODS

A sample of 16,934 community-based adults from 13 countries completed measures about the SCS and SI. Mental health and suicide prevention resources were provided to all participants, who indicated their intentions to use these resources.

RESULTS

Individuals with SCS (55.7%) were just as likely as those with SI alone (54.0%), and more likely than those with no suicide-related symptoms (45.7%), to report willingness to utilize mental health resources. Those with SI (both with and without SCS) were more likely to seek suicide prevention resources (52.6% and 50.5%, respectively) than those without SI (41.7% and 41.8%); however, when examining endorsements for personal use, those with SCS (21.6%) were more likely to use resources than individuals not at risk (15.1%).

CONCLUSIONS

These findings provide insight into individuals' willingness to use resources across configurations of explicitly disclosed (SI) and indirect (SCS) suicide risk.

Symptoms of the suicide crisis syndrome and therapist emotional responses: associations to self-harm and death by suicide within 18-months post-discharge among patients at an acute psychiatric department

BACKGROUND AND AIMS

This study explored the associations between symptoms of the Suicide Crisis Syndrome (SCS) at admission and self-harm and death by suicide post-discharge. The association between clinicians' emotional responses toward inpatients at admission and post-discharge self-harm and suicide death was also explored.

METHODS

Within the first 24-h of admission, patients completed a self-report measure of symptoms of SCS, and clinicians reported their emotional responses toward the patients. Follow-up data were obtained from the Norwegian Patient Registry and the Norwegian Cause of Death Registry.

RESULTS

Within 18 months post-discharge, 44 (12.7%) out of 347 patients had self-harmed, and five patients (1.4%) had died by suicide. At admission, patients who later self-harmed reported higher symptoms of SCS compared to the other patients. Clinicians reported more negative emotional responses toward the self-harm group. In a regression analysis, previous suicidal behavior and a diagnosis of "emotionally unstable personality disorder" (EUPD; F60.3) were associated with increased risk of self-harm post-discharge.

CONCLUSION

The results indicated that patients with post-discharge episodes of self-harm are significantly different from patients who do not self-harm in terms of more intense symptoms of SCS during admission. Clinicians' negative emotional responses may be relevant in the assessment of the risk of post-discharge self-harm.

Suicide Crisis Syndrome: A systematic review

BACKGROUND

The objective of this systematic review is to describe the scientific evidence for the Suicide Crisis Syndrome (SCS), a presuicidal cognitive and affective state consisting of five symptomatic dimensions: entrapment, affective disturbance, loss of cognitive control, hyperarousal, and social withdrawal. The aim of this article is to summarize the emerging literature on the SCS and to assess the extent to which a uniform syndrome can be assumed.

METHODS

A systematic literature search was conducted in three different databases (PubMed, PsycInfo, and Google Scholar) using the search terms "Suicide Crisis Inventory," "Suicide Crisis Syndrome," "Narrative Crisis Model of Suicide," and "Suicide Trigger State."

RESULTS

In total, 37 articles from 2010 to 2022 were identified by search criteria. Twenty-one articles published between 2017 and 2022 were included in the systematic review. All but three studies were conducted in the United States and examined clinical samples of adult high-risk psychiatric in- and outpatients. Sample sizes ranged from N = 170 to 4846. The findings confirm the unidimensional structure of the proposed disorder and support the predictive validity for short-term suicidal behavior above and beyond suicidal ideation.

CONCLUSION

Despite the promising predictive validity of the SCS, a precise prediction of future suicidal behavior remains difficult.

Machine learning approach for the development of a crucial tool in suicide prevention: The Suicide Crisis Inventory-2 (SCI-2) Short Form

The Suicide Crisis Syndrome (SCS) describes a suicidal mental state marked by entrapment, affective disturbance, loss of cognitive control, hyperarousal, and social withdrawal that has predictive capacity for near-term suicidal behavior. The Suicide Crisis Inventory-2 (SCI-2), a reliable clinical tool that assesses SCS, lacks a short form for use in clinical settings which we sought to address with statistical analysis. To address this need, a community sample of 10,357 participants responded to an anonymous survey after which predictive performance for suicidal ideation (SI) and SI with preparatory behavior (SI-P) was measured using logistic regression, random forest, and gradient boosting algorithms. Four-fold cross-validation was used to split the dataset in 1,000 iterations. We compared rankings to the SCI-Short Form to inform the short form of the SCI-2. Logistic regression performed best in every analysis. The SI results were used to build the SCI-2-Short Form (SCI-2-SF) utilizing the two top ranking items from each SCS criterion. SHAP analysis of the SCI-2 resulted in meaningful rankings of its items. The SCI-2-SF, derived from these rankings, will be tested for predictive validity and utility in future studies.

Relationship Between Severity and Length of Exposure to COVID-19 Parameters and Resulting Government Responses and the Suicide Crisis Syndrome (SCS)

OBJECTIVE

The COVID-19 pandemic has had a globally devastating psychosocial impact. A detailed understanding of the mental health implications of this worldwide crisis is critical for successful mitigation of and preparation for future pandemics. Using a large international sample, we investigated in the present study the relationship between multiple COVID-19 parameters (both disease characteristics and government responses) and the incidence of the suicide crisis syndrome (SCS), an acute negative affect state associated with near-term suicidal behavior.

METHODS

Data were collected from 5528 adults across 10 different countries in an anonymous web-based survey between June 2020 and January 2021.

RESULTS

Individuals scoring above the SCS cut-off lived in countries with higher peak daily cases and deaths during the first wave of the pandemic. Additionally, the longer participants had been exposed to markers of pandemic severity (eg, lockdowns), the more likely they were to screen positive for the SCS. Findings reflected both country-to-country comparisons and individual variation within the pooled sample.

CONCLUSION

Both the pandemic itself and the government interventions utilized to contain the spread appear to be associated with suicide risk. Public policy should include efforts to mitigate the mental health impact of current and future global disasters.

Using Virtual Patients to Assess and Improve Clinicians' Emotional Self-awareness: a Randomized Controlled Study

OBJECTIVE

Working with suicidal patients can elicit negative emotional responses that can impede clinicians' empathy and affect clinical outcomes. Virtual human interactions represent a promising tool to train clinicians. The present study investigated the impact of virtual human interaction training to enhance clinicians' emotional self-awareness and empathy when working with suicidal patients.

METHODS

Clinicians were randomly assigned into two groups. Both groups interviewed a virtual patient presenting with a suicidal crisis; clinicians in the intervention condition (n = 31) received immediate feedback about negative emotional responses and empathic communication, whereas those in the control condition (n = 33) did not receive any feedback. All clinicians interviewed a second virtual patient 1 week later. Clinicians' emotional response to the two virtual patients and their empathic communication with each of them were assessed immediately after each interaction. Linear mixed models were used to assess change in clinicians' emotional response and verbal empathy between the two interactions across conditions.

RESULTS

Clinicians' emotional responses toward the suicidal virtual patients were unchanged in both conditions. Clinicians in the intervention condition presenting low empathy level with the first virtual patient showed higher empathy level with the second virtual patient than with the first (B = 1.15, SE = 0.25, p < 0.001, 95% CI [0.42, 1.89]).

CONCLUSIONS

This work demonstrates the feasibility of using virtual human interactions to improve empathic communication skills in clinicians with poor empathy skills. Further refinement of this methodology is needed to create effective training modules for a broader array of clinicians.

Two sides of the same coin? Empirical examination of two proposed characterizations of acute suicidal crises: Suicide crisis syndrome and acute suicidal affective disturbance

Two proposed suicide-specific diagnoses, with accumulating research support, characterize the phenomenology of acute suicidal crises: Suicide Crisis Syndrome (SCS) and Acute Suicidal Affective Disturbance (ASAD). Despite conceptual overlap and some similar criteria, the two syndromes have never been compared empirically. The present study addressed this gap by examining SCS and ASAD utilizing a network analysis approach. A sample of 1568 community-based adults (87.6% cisgender women, 90.7% White, M_age = 25.60 years, SD = 6.59) in the United States completed an online battery of self-report measures. SCS and ASAD were first examined in individual network models, followed by a combined network to determine changes in network structure, as well as identify bridge symptoms that connected SCS and ASAD. The proposed criteria of SCS and ASAD formed sparse network structures that were largely unaffected by the influence of the other syndrome in a combined network. Social disconnection/withdrawal and manifestations of overarousal-particularly agitation, insomnia, and irritability-emerged as bridge symptoms that may connect SCS and ASAD. Our findings indicate the network structures of SCS and ASAD exhibit patterns of independence, alongside interdependence between overlapping symptom domains (i.e., social withdrawal, overarousal). Future work should examine SCS and ASAD prospectively to better understand their temporal dynamics and predictive utility in relation to imminent suicide risk.

Predictive validity and symptom configuration of proposed diagnostic criteria for the Suicide Crisis Syndrome: A replication study

OBJECTIVE

The Suicide Crisis Syndrome (SCS) is a new proposed suicide-specific diagnosis. In the present large replication study, we examine SCS diagnostic criteria to determine which configuration of symptoms demonstrates the strongest convergent and predictive validity for near-term suicidal behaviour.

METHODS

We conducted confirmatory factor analysis (CFA) to examine the factor structure of the proxy-SCS variables derived from an extensive self-report test battery and administered to 903 psychiatric patients (age (M = 36.70, SD = 13.91); gender (64.0% female)) at intake and 4-8-week follow-up assessments. Convergent and predictive validity of five configurations of the proposed SCS diagnostic criteria for suicidal ideation (SI) and attempts (SA) were examined using regression analyses. The new clinician-rated SCS-Checklist was piloted with 68 participants.

RESULTS

Both the one-factor and the five-factor models of proxy-SCS variables exhibited strong model fit, supporting the uni-dimensionality as well as the five-criteria structure of the SCS. All four configurations were uniquely related to the presence of a suicide attempt at follow-up when controlling for intake SI, lifetime SA, age, and gender, but none were significantly associated with intake SA when controlling for intake SI, age, and gender. All bivariate correlations between proxy-assessed and checklist-assessed SCS symptom configurations were significant and positive.

CONCLUSION

The proposed five-symptom structure of the SCS diagnostic criteria was supported and appears to describe a clinically meaningful syndrome specifically related to near-term suicidal behaviour. SCS assessment may significantly improve clinical evaluation of imminent suicide risk. Future studies are needed to assess the utility of the syndrome in clinical settings.

Exploring associations between the Modular Assessment of Risk for Imminent Suicide (MARIS) questionnaire and recent suicidal ideation and behavior among patients admitted at an acute psychiatric inpatient department

PURPOSE

The aim of the present study was to investigate the psychometric validity of the Modular Assessment of Risk for Imminent Suicide (MARIS) questionnaire in relation to recent suicidal ideation and behavior among a sample of patients admitted to an acute psychiatric inpatient department in Norway.

METHODS

The MARIS was completed within the first 24 h after admission by 338 patients and their clinicians. Information on recent suicidal ideation and behavior was extracted from patients' medical charts. Two out of four MARIS modules, the Suicide Trigger Scale Short-Form (STS-SF; modified version), and the Therapist Response Questionnaire Short-Form (TRQ-SF) demonstrated good internal consistency. The relationships between the STS-SF, addressing symptoms of the suicide crisis syndrome, and the TRQ-SF, exploring therapist emotional responses, and recent suicidal ideation was investigated by logistic regression analysis.

RESULTS

In the logistic regression analysis including pre-selected diagnoses, age, and gender as covariates, both STS-SF and TRQ-SF showed significant associations with recent suicidal ideation (inclusive of suicidal behavior in 27% of the patients with suicidal ideation).

CONCLUSION

Both the STS-SF and the TRQ-SF showed concurrent and incremental validity with regard to suicidal ideation. This is the first study showing the cross-cultural validity of the MARIS and supports its clinical utility as a suicide risk assessment tool in inpatient settings. Additionally, this study adds to the literature supporting the value of assessing clinicians' emotional responses to high risk patients.

Differential disclosure of suicidal intent to clinicians versus researchers: Associations with concurrent suicide crisis syndrome and prospective suicidal ideation and attempts

Several patient and setting characteristics have been found to predict disclosure of suicidality to clinicians versus researchers. Less understood, however, is whether differential disclosure of suicidality predicts concurrent indirect indicators of suicide risk and future suicide-related outcomes. The present study examined differential disclosure of suicidal intent in clinical versus research settings as a predictor of (1) concurrent symptoms of the Suicide Crisis Syndrome (SCS); and (2) suicidal ideation and attempts within one month in patients (n = 1039) and their clinicians (n = 144), who completed a battery of self-report and interview measures at baseline. Patients who reported suicidal intent to anyone had higher concurrent SCS symptoms than those who denied suicidal intent, with no differences between those who reported intent to clinicians versus researchers only. Severity of suicidal ideation and rates of suicide attempts at one-month follow-up were higher among those who disclosed suicidal intent to a research assistant than among those who did not-regardless of whether suicidal intent was disclosed to their clinician. Overall, an improved understanding of the factors contributing to differential disclosure will improve both scientific inquiry and patient safety.