History Of Suicide Attempts Research Articles

Suicidal thinking and behavior in young people at Clinical High Risk for Psychosis: Psychopathological considerations and treatment response across a 2-year follow-up study.

Suicidal ideation has high rates among individuals at Clinical High Risk for Psychosis (CHR-P). CHR-P mental states are currently defined as attenuated psychotic symptoms, brief intermittent psychotic symptoms, or genetic risk and functioning deterioration syndrome. However, the relationship between psychotic experiences and suicidality in CHR-P subjects is still not fully understood. Research emphasizes the need to address suicidality in CHR-P individuals due to its incidence and severe socio-economic impact. This study aimed to assess the baseline prevalence and 2-year incidence rates of suicidal thinking and behaviors in an Italian CHR-P sample, investigate the stability of suicidal ideation over 2 years, and examine its associations with treatment outcomes, sociodemographic characteristics, and clinical factors. CHR-P participants were treated in an "Early Intervention in Psychosis" program and completed the PANSS and the GAF scale at baseline and every 12 months. 180 CHR-P individuals were enrolled (92 with suicidal ideation [SI+]). SI+ subjects had a higher baseline prevalence of past suicide attempts. Over 2 years, a decrease in suicidal ideation severity was observed in the total group. Longitudinal improvement in disorganized symptoms was a key predictor of the decrease in suicidal ideation. Participants with a history of suicide attempts were more likely to attempt again. Addressing disorganization is crucial for suicide prevention in the CHR-P population. Continuous risk monitoring and preventive actions are needed for those with past suicide attempts.

Individuals Who Had a Lifetime History of Suicide Attempts and Their Relationships With Inflammation, Severity of Depressive Symptoms, and Childhood Maltreatments

Abstract Lifetime history of suicide attempts is associated with inflammatory mechanisms, severity of depressive symptoms, and childhood trauma. This cross-sectional study enrolled 54 suicide attempters and 154 nonsuicide attempters. All individuals were assessed through a questionnaire, a structured clinical interview, scales, anthropometric measures, and laboratory biomarkers. Individuals with a history of lifetime suicide attempts showed significant positive correlations regarding soluble tumor necrosis factor receptor 1 and severity of depressive symptoms (p = 0.013), interleukin-1 receptor antagonist and severity of depressive symptoms (p = 0.04), and absenteeism from work and childhood physical abuse (p = 0.012). Suicide attempters also experienced more childhood trauma (sexual abuse, physical abuse, emotional abuse, emotional neglect, and physical neglect) compared with nonsuicide attempters. IL-4 levels were significantly lower in individuals who attempted suicide than in nonsuicidal individuals. Lifetime suicide attempts in major affective disorders were associated with childhood trauma and proinflammatory and anti-inflammatory cytokines.

Factors Associated with Mental Health Service Use Among Children with ADHD from Adolescence to Early Adulthood.

Childhood attention-deficit/hyperactivity disorder (ADHD) is common and is associated with lifelong adverse outcomes. Little is known about factors associated with mental health service use (MHSU) among children with ADHD from adolescence to early adulthood. This retrospective cohort study aims to investigate factors associated with MHSU among children with ADHD from adolescence to early adulthood using secondary data from Waves I to III of the National Longitudinal Study of Adolescent Health (n = 554). Multivariable Poisson regression and Generalized Estimating Equation were used to estimate adjusted relative risks and 95% confidence intervals. Results indicate that factors significantly associated with MHSU from adolescence to early adulthood included race/ethnicity, a routine physical exam last year, and a history of suicidal ideation or attempt. Findings of the study extend the current understanding by identifying predictors and barriers for MHSU and inform the development of targeted intervention programs for increasing MHSU among children with ADHD.

Sexual Abuse, Post-Traumatic Stress Disorder and Psychopathological Characteristics in Women with Functional/Dissociative Seizures.

Functional/dissociative seizures (FDS), also known as psychogenic non-epileptic seizures (PNES), are sudden, transient, and involuntary events that include motor, sensory, cognitive or autonomic function alterations. In this work we analyzed the psychopathological characteristics of a subgroup of women who suffer from FDS with the aim to analyze the role of psychological trauma, with special emphasis on trauma due to sexual abuse (SA). Forty-five women diagnosed with FDS were included in the study (age range 18 to 64 years, mean = 34.7, standard deviation (SD) = 13.1). Clinical and psychopathological characteristics were reviewed. All patients have completed the clinical interviews, the Structured Clinical Interview for DSM-IV Axis I Disorders (SCID-I), the Structured Clinical Interview for DSM-IV Axis II Personality Disorders (SCID II) and the Global Assessment of Functioning (GAF) according to a special protocol for mental health assessment. Also, the history of sexual abuse trauma, the history of other non-sexual traumas and absence of history of trauma were reviewed. Eighty percent of the cases reported a history of trauma, and 40% reported a history of SA. Patients with a history of SA presented a significantly lower average age of seizure onset than patients with a history of other non-sexual traumas (p = 0.021). Significant associations were found between SA and post-traumatic stress disorder (PTSD) (p = 0.031), and SA and history of suicide attempts (p = 0.037). SA carries serious implications for the mental health of women suffering from FDS. Mental health professionals must consider the history of this type of trauma to provide the necessary care for this patient population.

8255 Munchausen Syndrome After Partial Pancreatectomy for Insulinoma: A Case Report

Abstract Disclosure: C.R. de Macedo: None. T.D. Bertolacini da Silva: None. I.P. de Magalhães: None. M.A. Pereira: None. I.C. Marques: None. J.L. Pinheiro Filho: None. G.F. Darce: None. D.M. Lourenço Junior: None. Background: Insulinoma is a rare, insulin-secreting pancreatic neuroendocrine tumor, most commonly benign, solitary, sporadic, well differentiated and with a slight female predominance. The investigation of hypoglycemia requires a fasting test to exclude, among other causes, factitious hypoglycemia. Clinical Case: A 27-year-old woman was admitted to the emergency room after seizure by hypoglycemic crisis (capillary blood glucose < 55 mg/dL). She had recurrent episodes of adrenergic/neuroglycopenic symptoms since the age of 14, occurring during fasting, mainly in the morning, with improvement after eating. After confirming Whipple's triad, a fasting test showed hyperinsulinemic hypoglycemia (glycemia 53 mg/dL, normal value >55 mg/dL; insulin 11.5 mcU/mL, nv <3mcU/mL) and increased C-peptide (3.83 ng/mL, nv <0,6 ng/mL). Abdominal magnetic resonance showed a 1.4 cm nodule in the pancreas tail. During hospitalization, she experienced Raynaud's phenomenon, leading to the diagnosis of Raynaud's disease (RD). Distal pancreatectomy was performed, confirming the diagnosis of insulinoma by immunohistochemistry. There was brief remission of the hypoglycemic episodes once they recurred two weeks later. As imaging tests did not show new pancreatic lesions, somatostatin analogue was begun, resulting in improvement for a few more weeks. Due to recurrent hypoglycemia and new seizures, she required continuous intravenous infusion of glucose during hospitalization. A new fasting test revealed hyperinsulinemic hypoglycemia (glycemia 42 mg/dL, insulin 43.3 mcU/mL), low C-peptide (0.5 ng/mL) and normal proinsulin (2.39 pmol/L, nv <5 pmol/L) values. Due RD, auto-immune hypoglycemia was excluded by negative anti-insulin antibodies. Insulinomatosis was also considered, as potential etiology, but review of surgical specimen excluded this hypothesis. After 4 months of hospitalization, due suspicious behavior, a review of her personal belongings revealed insulin vials and needles for injection. The patient confessed to applying insulin to simulate the symptoms, also revealing a history of childhood trauma and previous suicide attempts. After psychiatric evaluation, borderline personality disorder was identified, and Munchausen syndrome was considered. Since then, the patient did not require intravenous glucose with no recurrence of hypoglycemia. Conclusion: The investigation of hypoglycemia can be challenging, requiring appropriate diagnostic protocols. Even in patients who appear to have a well-defined diagnosis, as in our case with anatomopathological confirmation of insulinoma, it is always important to rule out factitious hypoglycemia. The incorrect diagnosis can lead to inappropriate invasive and surgical procedures with definitive consequences, such as exogenous pancreatic insufficiency and insulin-dependent diabetes mellitus. Presentation: 6/1/2024

Comparative analysis of the identification efficacy of the bipolarity index and diagnostic and statistical manual of mental disorders, 5th edition, for bipolar disorder screening among college students

ObjectiveThis study aims to explore the differences in the identification efficacy of the Bipolarity Index (BPX) and the Diagnostic and Statistical Manual of Mental Disorders, 5th Edition (DSM-5), as screening approaches for bipolar disorder (BD). MethodsA total of 150 college students with depressive episodes who underwent outpatient and inpatient treatment at Central China Normal University Hospital and the Renmin Hospital of Wuhan University between January 2021 and December 2022 were selected as research participants. We used a self-developed general data questionnaire to collect comprehensive demographic and clinical data from all participants. This questionnaire covered various aspects including gender, age, occupation, education level, drinking habits, age at onset, disease duration, frequency and duration of the current episode, comorbidities, family history of genetic conditions, diagnosis and prognosis. Participants were evaluated using the BPX, the DSM-5 and the International Classification of Diseases, 10th Revision (ICD-10). Clinical diagnosis based on the ICD-10 served as the standard against which the BPX and DSM-5 were compared for sensitivity, specificity, accuracy, positive predictive value (PPV) and negative predictive value (NPV). Additionally, we conducted a multivariate logistic regression analysis to evaluate risk factors associated with BD. ResultsThe sensitivity, specificity, accuracy, PPV and NPV were 85.34%, 81.90%, 84.00%, 87.21% and 79.69% for the BPX screening, and 72.73%, 90.32%, 80.00%, 91.43% and 70.00% for the DSM-5 screening, respectively. The study also identified significant clinical characteristics that differentiated those who screened positive for BD using the BPX. These characteristics included a younger average age at onset, a higher prevalence of atypical depression and more frequent prior affective episodes compared with those who did not meet the BPX criteria for BD. Risk factors associated with BD included atypical depression, history of suicide attempts, four or more previous affective episodes, borderline personality disorder, mixed states and a family history of BD. ConclusionIn conclusion, our findings suggest that the BPX exhibits superior sensitivity in screening for BD among college students compared with the DSM-5. Additionally, the study identifies significant risk factors (e.g., atypical depression, history of suicide attempts and multiple previous affective episodes), which are crucial for early detection and management.

Alterations in orbitofrontal cortex communication relate to suicidal attempts in patients with major depressive disorder

BackgroundInvestigating how the interaction between the orbitofrontal cortex (OFC) and various brain regions/functional networks in major depressive disorder (MDD) patients with a history of suicide attempt (SA) holds importance for understanding the neurobiology of this population. MethodsWe employed resting-state functional magnetic resonance imaging (rs-fMRI) to analyze the OFC's functional segregation in 586 healthy individuals. A network analysis framework was then applied to rs-fMRI data from 86 MDD-SA patients and 85 MDD-Control patients, utilizing seed mappings of OFC subregions and a multi-connectivity-indicator strategy involving cross-correlation, total interdependencies, Granger causality, and machine learning. ResultsFour functional subregions of left and right OFC, were designated as seed regions of interest. Relative to the MDD-Control group, the MDD-SA group exhibited enhanced functional connectivity (FC) and attenuated interaction between the OFC and the sensorimotor network, imbalanced communication between the OFC and the default mode network, enhanced FC and interaction between the OFC and the ventral attention network, enhanced interaction between the OFC and the salience network, and attenuated FC between the OFC and the frontoparietal network. LimitationsThe medication and treatment condition of patients with MDD was not controlled, so the medication effect on the alteration model cannot be affirmed. ConclusionThe findings suggest an imbalanced interaction pattern between the OFC subregions and a set of cognition- and emotion-related functional networks/regions in the MDD-SA group.

Time perception and suicidal ideation during COVID-19 pandemic: A longitudinal study

BackgroundThere are several reports of disruptions in time perception during lockdown periods throughout the COVID-19 pandemic. Our aim was to study the role of subjective flow of time (SFT) in the triggering of suicidal ideation in patients with a history of suicide attempt (SA), as compared with affective controls without such history (AC). MethodsThis study involved 296 psychiatric patients that were assessed five times between 2020 and 2021. We analyzed the SFT using a mixed logistic model and characterized SFT during significant periods of governmental restrictions. Multivariate logistic regressions were used to identify independent SFT characteristics. We evaluated the association between SFT and suicidal ideation, considering interactions with depression, insomnia, loneliness, and social support. ResultsThe findings revealed a significant alteration in SFT, closely linked to the implementation and easing of governmental restrictions. During the initial lockdown, SA exhibited lower SFT levels compared to AC. Furthermore, the relationship between SFT and suicidal ideation was influenced by depression. In the interim period between lockdowns, SFT's impact on suicidal ideation was mediated by insomnia. DiscussionDisturbances in SFT could be related to adaptability to lockdown conditions or may be a coping mechanism with depression, insomnia, suicidal ideation and overall psychological distress. Understanding the interplay of SFT with these factors provides crucial insights into the complex psychological mechanisms involved.

Why Do Some Depressive Patients Have Suicidal Ideation but Others Not? Suicidal Ideation From the Perspective of Affective Neuroscience Personality Traits.

Although major depression is the disorder most frequently associated with suicidal behavior, it is unclear that major depressive disorder patients may develop suicidal ideation. Basic affective system theory may provide a novel and beneficial viewpoint in this field. The goal of this study was to investigate the basic affective system in relation to suicidal ideation in individuals with depression. The study population comprised 160 participants who had been formally diagnosed with major depressive disorder. Participants were divided into two groups according to whether they had suicide ideation (depression with suicide [DS]) (N=93) or not (depression with no suicidal ideation [DNS]) (N=67). The Beck Depression Inventory (BDI), the Suicide Probability Scale (SPS), the Beck Hopelessness Scale (BHS), and the Affective Neuroscience Personality Scale (ANPS) were applied. Statistical Product and Service Solutions (SPSS) 24 and the SPSS macroprocess, which were specifically developed for assessing complex models including serial mediators, were used to analyze the data. The mean age of all participants was 31.1±11 years, and most of them were female (65%). The DS group had a higher family history of psychiatric medication use and suicidal attempts. In addition, BDI, BHS, and SPS total scores were higher, as well as ANGER subscale scores were higher in the DS group. In mediation analysis, the ANGER subscale significantly predicted the presence of suicide ideation. We observed a direct effect of the ANGER subscale score on suicide ideation as well as an indirect effect of the ANGER subscale score on suicidal ideation via depression severity. Higher scores on ANGER are associated with suicidal ideation. Neurobiological correlates, including the ANGER system, may be promising in understanding suicidal behaviors.

Ambulatory assessment of suicidal ambivalence: The temporal variability of the wish to live and the wish to die and their relevance in the concurrent and prospective prediction of suicidal desire.

Suicidal ambivalence is increasingly understood as the result of the interplay of two conflicting motivational orientations, the wish to die (WTD) and wish to live (WTL). However, research is scarce regarding the nature of their relationship, their temporal structure, and their relevance in predicting suicidal desire. Fifty psychosomatic/psychiatric inpatients (17 reporting suicide attempts) took part in an intensive longitudinal design with 10 signal-contingent prompts per day over 10 days; assessing WTD, WTL, and suicidal desire. We calculated mean values and variability of WTD, WTL, suicidal ambivalence, and suicidal desire and tested mixed-effects models of suicidal desire. The mean number of answered prompts was 40.98 (SD = 21.68). Repeated-measures correlation of WTD and WTL was r = -0.60. Patients with a history of suicide attempts reported higher WTD, lower WTL, more suicidal ambivalence, stronger suicidal desire, and showed higher variability in all constructs. At the same assessment, WTD was the strongest statistical predictor of suicidal desire. Only WTL and the interaction of WTD and WTL predicted suicidal desire prospectively. Wish to die and WTL are likely two distinct (although correlated) constructs that should not be reduced to a single ambivalence score. A stronger focus on WTL holds potential for suicide research and practice.

Differential prevalence of psychiatric disorders and mental health characteristics associated with lifetime suicide attempts in the Asian American and Pacific Islander adult population

BackgroundAsian American and Pacific Islander (AAPI) adults are an understudied group in terms of their mental health and mental healthcare needs. This has been complicated by the difficulty of recruiting adequate national samples of AAPI adults for research. ObjectiveThis study aimed to analyze national data to examine the lifetime prevalence of major psychiatric disorders among AAPI adults relative to non-AAPI adults, as well as to identify and compare sociodemographic and clinical characteristics associated with lifetime suicide attempts among AAPI and non-AAPI adults. MethodsCross-sectional data on 36,109 adults, including 1801 AAPI adults, from the National Epidemiological Survey of Alcohol and Related Conditions-III (NESARC-III), were analyzed with a series of chi-square and logistic regression analyses. ResultsWe found a significantly lower lifetime prevalence of mental health disorders in the AAPI versus the non-AAPI population nationally, including 2% of AAPI adults reporting lifetime suicide attempts as compared to about 5% of non-AAPI adults. Female sex and a history of major depressive disorder diagnosis were associated with lifetime suicide attempts in the AAPI and non-AAPI populations. Several unique factors were associated with having a history of suicide attempts in only the AAPI population, including a military service history and a diagnosis of panic disorder. DiscussionOur analysis demonstrated the significant sectors of the AAPI population that merit research, support, and intervention, including the AAPI veteran population. This study identifies several characteristics among AAPI adults that may make them particularly vulnerable to psychiatric problems and suicide risk, which may inform targeted prevention and efforts to provide culturally competent care to this population.

Evaluation of Suicidality in Psychiatric Outpatients: Experience of Ar-razi Hospital in Salé

Suicidality, encompassing suicidal ideation, plans, and suicide attempts, is a complex phenomenon particularly prevalent among psychiatric patients. This study focuses on identifying the risk factors associated with suicidality in outpatients at a psychiatric hospital in Morocco. A total of 278 patients were evaluated using a questionnaire covering sociodemographic data, psychiatric history, and suicidal behaviors. The results show that gender, religious practices, mood disorders, substance use, particularly alcohol and benzodiazepines, and a history of suicide attempts are significant predictors of suicidality. These findings highlight the importance of a multidimensional approach to suicide assessment and prevention in this population.

Suicidality, perceived chronic stress, and stress-induced cortisol changes of individuals with schizophrenia.

The associations of suicidality with stress are poorly studied in schizophrenia. The study aimed to determine whether suicidality was correlated with perceived chronic stress and the cortisol fluctuations under stress tasks in schizophrenia. High suicidality was defined as a lifetime history of suicide attempts or suicidal ideation in the past 2weeks. Individuals with schizophrenia and high suicidality (SZ-HS, n=59), with low suicidality (SZ-LS, n=207), and healthy controls (HC, n=196) finished the Perceived Stress Scale. Then, they participated in an experiment that induced stress using the Paced Auditory Serial Addition Task and the Mirror Tracing Persistence Task. Negative affect was measured at baseline and after finishing each task. The salivary cortisol was collected before-, after 20min, and after 40min of the tasks. SZ-HS had elevated perceived stress than SZ-LS and HC. Mixed effect models showed that stress tasks induced cortisol changes in all groups; cortisol of SZ-LS was reduced more than HC, but SZ-HS and SZ-LS did not differ in cortisol fluctuations. SZ-HS and SZ-LS experienced similar negative affect changes during tasks and the difference in withdrawal rates was nonsignificant. SZ-HS had an increased error rate than SZ-LS. In conclusion, suicidality was correlated with high-level perceived stress but did not result in differences in cortisol reactivities under stress tasks. It suggests the inconsistency between appraisal of stress and biological stress system disturbance among SZ-HS compared to SZ-LS.

Insomnia moderates the association between positive symptoms and suicidal ideation: A large-scale cross-sectional study in Chinese patients with chronic schizophrenia

ObjectiveBoth insomnia and positive symptoms are linked to suicidal ideation (SI) in schizophrenia, yet their interaction remains unexplored. This study aims to investigate whether insomnia moderates the relationship between positive symptoms and SI in a large sample of Chinese patients with chronic schizophrenia. MethodWe recruited 1407 patients and assessed them using the Positive and Negative Syndrome Scale (PANSS), Insomnia Severity Index (ISI), and Beck Scale for Suicide Ideation (BSSI). We also collected demographic information and lifetime history of suicide attempts (SA). Positive symptoms were evaluated using the PANSS positive factor. Multivariate logistic regression and moderation analysis were performed. ResultsThe prevalence of insomnia and SI was 13.5 % and 9.7 %, respectively. ISI scores (adjusted odds ratio [AOR]: 1.06; 95 % confidence interval [CI]: 1.01–1.10, p = 0.011), PANSS positive factor (AOR: 1.05; 95 % CI: 1.01–1.09, p = 0.008), PANSS mood factor (AOR: 1.16; 95 % CI: 1.10–1.22, p < 0.001), and lifetime SA (AOR: 4.35; 95 % CI: 2.86–6.61, p < 0.001) were independently associated with SI. Moderation analysis revealed that insomnia amplified the association between positive symptoms and SI. Specifically, higher levels of insomnia significantly strengthened this relationship (b = 0.086, 95 % CI = 0.048–0.124, p < 0.001), while the association was negligible in patients with low levels of insomnia (b = −0.003, 95 % CI = -0.042–0.036, p = 0.870). ConclusionBoth insomnia and positive symptoms were independently related to SI in schizophrenia, with insomnia moderating the relationship between positive symptoms and SI. Further studies are needed to test whether interventions against insomnia and positive symptoms would be effective at reducing SI in this population.

Depressive symptoms and suicidal ideation among university students before and after the COVID-19 pandemic

BackgroundThe COVID-19 pandemic and lockdown have had negative effects on students' mental health. However, little information is available regarding the frequencies of depressive symptoms and suicidal ideation during the post-pandemic period. We aimed to determine the effect of the COVID-19 pandemic on depressive symptoms and suicidal ideation among French university students. MethodsIn this comparative study, 4463 students were recruited during the pre-COVID-19 pandemic period (2013-2020) and 1768 students, during the post-COVID-19 pandemic period (2022-2023). Standardized frequencies of depressive symptoms and suicidal ideation were compared between the two time periods. Changes in the level of depressive symptoms and suicidal ideation between the pre- and post-pandemic periods, were then analyzed using interrupted time series analysis. ResultsCompared to participants from the pre-pandemic sample, participants from the post-pandemic sample had higher standardized rates of depressive symptoms (40.6 % vs 25.6 %) and suicidal ideation (29.3 % vs 21.1 %). Segmented logistic regression showed an about 50 % increased risk of depressive symptoms (aOR, 1.47; 95 % CI, 1.01–2.13) and a 100 % increased risk of suicidal ideation (aOR, 2.00; 95 % CI, 1.33–3.00) in the post-pandemic period. Before the pandemic, there was no significant time-trend for depressive symptoms (aOR, 1.002; 95 % CI, 0.999–1.006) and suicidal thoughts (0.999–1.006; aOR, 0.999; 95 % CI, 0.995–1.002). LimitationsPotential biases related to self-selection of participants in the study and information bias. History of depression and suicide attempt were self-reported. ConclusionsThese findings reveal an alarming deterioration of students' mental health in the post-pandemic period compared to the pre-pandemic era.

Means to an end: Characteristics and follow-up of emergency department patients with a history of suicide attempt via medication overdose.

Availability and accessibility of a wide range of medications may be a contributing factor to rising medication-related overdose (OD) rates. Treatment for both suicide attempts (SAs) and ODs often occurs in the emergency department (ED), highlighting its potential as a screening and intervention point. The current study aimed to identify sociodemographic and clinical characteristics of individuals who reported SA via medication OD compared to other methods and to examine how these patients' suicide severity and behaviors differed over 12-month post-ED follow-up. Data were analyzed from Phases 1 and 2 of the Emergency Department Safety Assessment and Follow-up Evaluation multicenter study (N = 1376). Participants with a history of SA (n = 987) were categorized based on whether they indicated a past medication-related SA via OD. Of participants with history of SA, 62.7% (n = 619) reported medication OD for either their most serious or their most recent SA. Multivariate analyses indicated female birth sex, diagnosis of bipolar disorder, and having some college education were significantly associated with membership in the medication OD attempt group (p <0.05). Of those who attempted suicide over the 12-month follow-up, nearly 60% of participants in the medication OD attempt group reported a subsequent SA via OD over follow-up. However, nearly half (46.5%) of participants with no medication OD at baseline also reported medication OD at follow-up. Among patients presenting to the ED, females, individuals with bipolar disorder, and patients with a college education, respectively, may be at highest risk for SAs via medication OD. Prospectively, medication OD appears to be a frequent method, even among individuals with no prior attempt via OD, as demonstrated by the high percentage of patients who did not have a medication OD at baseline, but reported a medication OD during follow-up.

Typologies of Psychiatric Diagnoses Among Inpatients with Recent Suicide Attempts

Objective Psychiatric multimorbidity is a well-documented risk factor for suicide. However, diagnostic heterogeneity and patterns of comorbidity likely exists within the population of those who attempt suicide. Person-centered statistical approaches, such as latent class analysis (LCA), extract distinguishable groups differentiated by prevalence and comorbidity of psychiatric disorders. Method The present study used LCA to identify typologies of psychiatric heterogeneity in a sample of 213 inpatients (M age = 33.04 [SD = 12.67]; 57.3% female; 62.4% White; 23.9% Hispanic/Latino) with a history of suicide attempt who were recruited for a suicide prevention clinical trial. Class differences in suicide history characteristics; demographic characteristics; and cognitive-affective and behavioral risk factors, obtained from an initial evaluation involving the administration of a semi-structured diagnostic interview, suicide risk assessment, and battery of self-report measures, were explored. Results LCA identified three classes in the best-fitting solution: Depressive-High Comorbidity (n = 68), Depressive-Low Comorbidity (n = 86), and Bipolar (n = 59). The Depressive-Low Comorbidity class reported less severe suicidal ideation (p < .001), anxiety (p < .001), stress (p < .001), unlovability beliefs (p = .006), and impulsivity (p < .001). The Depressive-Low Comorbidity class also reported fewer actual attempts than the Bipolar class (p = .001) and fewer interrupted attempts than the Depressive-High Comorbidity class (p = .004). Conclusions The Depressive-High Comorbidity and Bipolar classes consistently endorsed higher levels of suicide risk factors. These findings may help to illuminate typologies of suicide attempters with unique clinical needs, which is an essential step toward personalized medicine.

Vitamin C and suicidal ideation: A cross-sectional and Mendelian randomization study

BackgroundStudies have shown that a history of suicide attempts is associated with low levels of antioxidant vitamins. However, the specific relationship between vitamin C and suicidal ideation remains poorly understood. The purpose of this study is to investigate the effect of vitamin C on the development of suicidal ideation and to explore further the causal relationship using Mendelian randomization (MR). MethodsUsing the 2005–2018 National Health and Nutrition Examination Survey (NHANES) dataset, a comprehensive, cross-sectional, stratified survey of 28,623 participants aged 20 years and older was conducted. Suicidal ideation was assessed using item 9 of the Patient Health Questionnaire-9 (PHQ-9) item. The relationship between vitamin C and suicidal ideation was revealed by weighted multiple linear regression, smooth curve fitting, hierarchical analysis, and interaction test. To determine causality, MR was performed on vitamin C and suicidal ideation. ResultsIn cross-sectional studies, all models showed a negative association between vitamin C and suicidal ideation, with a 37 % reduction in the risk of suicidal ideation for each unit increase in vitamin C in the highest quartile in the fully adjusted model. The results of the subgroup analysis showed that the association between vitamin C and suicidal ideation was stable across gender, age, education, smoking status, and marital status. In the MR study, our bivariate model showed no significant causal relationship between vitamin C and the development of suicidal ideation. ConclusionsDietary vitamin C intake was negatively associated with the development of suicidal ideation. However, genetic evidence does not support causation of these associations.

Measurement Invariance of the Four-Item Entrapment Scale Short-Form (E-SF): A Transnational Examination Across Race/Ethnicity, Sexual Orientation, and Suicide Attempt History Among Minoritized Adults.

Feelings of entrapment-posited to arise when attempts to escape from defeating or humiliating circumstances are blocked-may confer increased risk for psychopathology and suicidal thoughts and behaviors (STB), particularly among minoritized individuals who often have more frequent exposure to such experiences. Including entrapment in empirical models may aid research efforts in further exploring its role in minority mental health. The Entrapment Scale Short-Form (E-SF), a brief version of the 16-item Entrapment Scale, is one tool that may be utilized toward this end; however, to do so meaningfully, its psychometric properties and measurement invariance must be evaluated in diverse samples. This study aimed to examine the factor structure, measurement invariance, and convergent validity of the E-SF across race/ethnicity and sexual orientation in a combined transnational sample of minoritized adults (total N = 1,194). Results supported a one-factor model of the E-SF that was invariant across samples, race/ethnicity, sexual orientation, and history of suicide attempt. Furthermore, significant positive correlations observed between theoretically relevant constructs of anxiety, depression, and posttraumatic stress disorder symptoms supported its convergent validity. Implications include disproportionate levels of entrapment experienced by minoritized individuals-particularly by sexual minorities-which likely reflect the discrimination frequently endured by these individuals.

Demographic and clinical characteristics of individuals with psychosis symptoms who died by suicide: Findings of a psychological autopsy study

Suicide is a critical public health concern among individuals with schizophrenia spectrum disorders (SSDs). Still, significant gaps remain in understanding relationships between suicide outcomes and both demographic and clinical characteristics. Data were examined from 57 adults of a psychological autopsy study who had psychosis symptoms and died between 1989 and 2017 in the Midwestern United States. This study compared demographic and clinical characteristics of those who died by suicide (n = 26) to those who died by natural (n = 26) or accidental (n = 5) causes. Those who died by suicide were more often younger, white/Caucasian, more educated, and more often employed than those who died by natural or accidental causes (p < .05). Furthermore, symptoms of depression, recurrent suicidal ideation, history of suicide attempt, and being in a first episode of psychosis were experienced significantly more by those who died by suicide in comparison to natural or accidental causes (p < .05). Findings highlight the need to consider depression in suicide risk for psychosis populations, intervene in early stages of psychosis illness, and implement suicide prevention strategies tailored to individuals with psychosis and SSDs. Implications point towards the need for tailored interventions to mitigate risk for suicide death in this vulnerable population.