Toxoplasma gondii, Suicidal Behavior, and Intermediate Phenotypes for Suicidal Behavior

Within the general literature on infections and suicidal behavior, studies on Toxoplasma gondii (T. gondii) occupy a central position. This is related to the parasite's neurotropism, high prevalence of chronic infection, as well as specific and non-specific behavioral alterations in rodents that lead to increased risk taking, which are recapitulated in humans by T. gondii's associations with suicidal behavior, as well as trait impulsivity and aggression, mental illness and traffic accidents. This paper is a detailed review of the associations between T. gondii serology and suicidal behavior, a field of study that started 15 years ago with our publication of associations between T. gondii IgG serology and suicidal behavior in persons with mood disorders. This "legacy" article presents, chronologically, our primary studies in individuals with mood disorders and schizophrenia in Germany, recent attempters in Sweden, and in a large cohort of mothers in Denmark. Then, it reviews findings from all three meta-analyses published to date, confirming our reported associations and overall consistent in effect size [ranging between 39 and 57% elevation of odds of suicide attempt in T. gondii immunoglobulin (IgG) positives]. Finally, the article introduces certain links between T. gondii and biomarkers previously associated with suicidal behavior (kynurenines, phenylalanine/tyrosine), intermediate phenotypes of suicidal behavior (impulsivity, aggression) and state-dependent suicide risk factors (hopelessness/dysphoria, sleep impairment). In sum, an abundance of evidence supports a positive link between suicide attempts (but not suicidal ideation) and T. gondii IgG (but not IgM) seropositivity and serointensity. Trait impulsivity and aggression, endophenotypes of suicidal behavior have also been positively associated with T. gondii seropositivity in both the psychiatrically healthy as well as in patients with Intermittent Explosive Disorder. Yet, causality has not been demonstrated. Thus, randomized interventional studies are necessary to advance causal inferences and, if causality is confirmed, to provide hope that an etiological treatment for a distinct subgroup of individuals at an increased risk for suicide could emerge.

Correlates of suicidal thoughts and attempts in males engaging in muscle dysmorphia or eating disorder symptoms

OBJECTIVE

Despite the high rates of suicidality in body dysmorphic disorder and eating disorders (EDs), research on suicidality in a related disorder, muscle dysmorphia (MD), is essentially nonexistent. Thus, this study tested relations between suicidal thoughts and behaviors and MD and ED symptoms in an online male community sample.

METHOD

A total of 464 males (M_age  = 40.3; 85% Caucasian) recruited from Amazon's Mechanical Turk completed measures that evaluated ED symptoms, MD symptoms, current suicidal ideation, and past suicide attempts.

RESULTS

Most MD and ED symptoms were correlated with current suicidal ideation and previous suicide attempts. In multivariate regression models, vomiting and appearance intolerance remained significantly related to suicidal ideation, while hard exercise and lower functional impairment were significantly related to prior suicide attempts.

CONCLUSION

Results indicate that appearance dissatisfaction, a core MD criterion, and hard exercise, a common behavioral symptom of MD, are associated with suicidality.

Suicide Attempts and Perceived Social Support among Chinese Drug Users: The Mediating Role of Self-Esteem and Depression

Suicidal behavior is a severe problem among drug users. This study examines influential factors related to suicide attempts and analyzes possible mediators of the relationship between perceived social support and suicide attempts amongst Chinese drug users under compulsory institutional drug treatment. Taking perceived social support as the independent variable, we found that the relationship between suicide attempts and perceived social support is mediated by self-esteem as a protective factor and depression as a risk factor. Path analysis shows that self-esteem contributes relatively more to the indirect effects than depression does, accounting for 31.1% and 24.2% of the total effect, respectively. Generally speaking, the findings of this study point to an urgent need for addressing suicide attempts among Chinese drug users while treating self-esteem as the protective factor that deserves as substantial attention as depression receives.

C-SSRS performance in emergency department patients at high risk for suicide

OBJECTIVE

To evaluate the psychometric and predictive performance of the Columbia-Suicide Severity Rating Scale (C-SSRS) in emergency department (ED) patients with suicidal ideation or attempts (SI/SA).

METHODS

Participants (n = 1,376, mean age 36.8, 55% female, 76.8% white) completed the C-SSRS during the ED visit and were followed for one year. Reliability analyses, exploratory structural equation modeling, and prediction of future SA were explored.

RESULTS

Reliability of the Suicidal Ideation subscale was adequate, but was poor for the Intensity of Ideation and Suicidal Behavior subscales. Three empirically derived factors characterized the C-SSRS. Only Factor 1 (Suicidal Ideation and Attempts) was a reliable predictor of subsequent SA, though odds ratios were small (ORs: 1.09-1.10, CI_95% : 1.04, 1.15). The original C-SSRS Suicidal Ideation and Suicidal Behavior subscales and the C-SSRS ED screen predicted subsequent SA, again with small odds ratios (ORs: 1.07-1.19, CI_95% : 1.01, 1.29). In participants without a SA history, no C-SSRS subscale predicted subsequent SA. History of any SA (OR: 1.98, CI_95% : 1.43, 2.75) was the strongest predictor of subsequent SA.

CONCLUSIONS

The psychometric evidence for the C-SSRS was mixed. History of a prior SA, as measured by the C-SSRS, provided the most parsimonious and powerful assessment for predicting future SA.

Predictors and correlates of lifetime and persistent non-suicidal self-injury and suicide attempts among adult survivors of childhood sexual abuse

Background: Childhood sexual abuse (CSA) is a well-established risk factor for non-suicidal self-injury (NSSI) and suicide attempts (SA); still few studies have examined predictors of individual differences in NSSI/SA amongst CSA survivors. Objective: To examine predictors of NSSI and SA among adult CSA-survivors. Methods: In a sample of 516, primarily female adult CSA-survivors recruited from support centres for sexual abuse survivors in Norway, we examined the role of abuse/perpetrator characteristics, and the degree/severity of exposure to other types of childhood maltreatment (cumulative childhood maltreatment; CCM), as predictors of lifetime NSSI and SA. In a subsample of 138 individuals responding to follow-up waves two- and four years later, these same distal factors, as well as previous NSSI and proximal factors in the form of symptoms of mental health disorders (posttraumatic stress, anxiety, depression, sleep disturbances, and eating disorders), relational problems, and perceived social support, were examined as predictors of persistent NSSI. Finally, those attempting new SA during the follow-up period were compared to those who did not on these variables. Results: Higher CCM scores and having had an unknown perpetrator positively predicted lifetime NSSI scores. Higher CCM scores, violent abuse, and having had an unknown perpetrator predicted lifetime SA. Higher CCM scores, previous NSSI, having had a known perpetrator, as well as higher depression-, anxiety- and eating disorder scores, positively predicted persistent NSSI during the four-year follow-up period. Compared to those with no new SA, those reporting new SA during the follow-up period had higher CCM, lifetime NSSI, mental health symptoms and relational problem scores, lower perceived social support scores, and were more likely to have done a past SA and to have experienced abuse involving physical violence. Conclusions: A broad range of both distal and proximal factors should be assessed as potential predictors of NSSI and SA among adult CSA-survivors.

Financial Strain and Suicide Attempts in a Nationally Representative Sample of US Adults

Although research has identified many suicide risk factors, the relationship between financial strain and suicide has received less attention. Using data representative of the US adult population (n = 34,653) from wave 1 (2001-2002) and wave 2 (2004-2005) of the National Epidemiologic Survey on Alcohol and Related Conditions, we investigated the association between financial strain-financial debt/crisis, unemployment, past homelessness, and lower income-and subsequent suicide attempts and suicidal ideation. Multivariable logistic regression controlling for demographic and clinical covariates showed that cumulative financial strain was predictive of suicide attempts between waves 1 and 2 (odds ratio (OR) = 1.53, 95% confidence interval (CI): 1.32, 1.77). Wave 1 financial debt/crisis (OR = 1.58, 95% CI: 1.06, 2.34), unemployment (OR = 1.52, 95% CI: 1.10, 2.10), past homelessness (OR = 1.50, 95% CI: 1.03, 2.17), and lower income (OR = 1.51, 95% CI: 1.01, 2.25) were each associated with subsequent suicide attempts. Respondents endorsing these 4 financial-strain variables had 20 times higher predicted probability of attempting suicide compared with respondents endorsing none of these variables. Analyses yielded similar results examining suicidal ideation. Financial strain accumulated from multiple sources (debt, housing instability, unemployment, and low income) should be considered for optimal assessment, management, and prevention of suicide.

Expanding our understanding of the relationship between nonsuicidal self-injury and suicide attempts: The roles of emotion regulation self-efficacy and the acquired capability for suicide

OBJECTIVE

Although past literature has emphasized the role of acquired capability in the relationship between nonsuicidal self-injury (NSSI) and suicide attempts, support for the indirect relationship of NSSI to suicide attempts through acquired capability is limited. Thus, research examining other factors that may underlie this relationship is needed. Across two studies, this research examined the indirect relationships of NSSI frequency to suicide attempts through both acquired capability and emotion regulation self-efficacy (ERSE).

METHOD

Two large samples of adults (one nationwide community sample and one clinical sample of patients with substance use disorders) completed questionnaires and/or interviews.

RESULTS

Results revealed significant indirect relationships of NSSI frequency to lifetime suicide attempts through ERSE, but not acquired capability, within both samples.

CONCLUSIONS

Results highlight the relevance of ERSE to both suicide attempts and the NSSI-suicide attempt relationship, and suggest the potential utility of interventions aimed at increasing ERSE among individuals with repeated NSSI.

Evolutionary puzzle of Toxoplasma gondii with suicidal ideation and suicide attempts: An updated systematic review and meta-analysis

The World Health Organization has reported an annual global suicide rate of 14.5 per 100,000 people. On the other hand, it is estimated that approximately one-third of the global population are infected with Toxoplasma gondii (T. gondii) parasite. It is widely assumed that microbial pathogens, such as T. gondii, are probably associated with affective and behavioural modulation. The present article aimed to assess the proposed role of toxoplasmosis in raising the risk of suicidal ideation (SI) and suicide attempts (SA) using the available epidemiological data. Seven major electronic databases and the Internet search engine Google were searched for all the studies published between the 1st of January 1950 and 31st of October 2019. The heterogeneity and the risk of bias within and across studies were assessed. Following data extraction, pooled odds ratios (ORs) with 95% confidence interval (CI) across studies were calculated using the random-effects models. A total number of 9,696 articles were screened and 27 studies were regarded as eligible in our systematic review (SI with five papers and 22 papers on SA). A significant association was detected between antibodies against T. gondii with TA (ORs = 1.57; 95% confidence interval [CI] 1.23-2.00, p = .000). Exploration of the association between T. gondii and SA yielded a positive effect of seropositivity for IgG antibodies but not IgM. Despite the limited number of studies, a statistical association was detected between suicidal behaviours and infection with latent T. gondii.

Internet addiction among college students in a Chinese population: Prevalence, correlates, and its relationship with suicide attempts

BACKGROUND

Internet addiction is common, but its relationship with suicide attempts is rarely reported among Chinese college students. This study aimed to investigate the prevalence and correlates of internet addiction among Chinese college students.

METHODS

A cross-sectional study was conducted among 8,098 college students in Hunan province, China. We collected the following data: demographic variables, suicidal behaviors, internet addiction (Revised Chinese Internet Addiction Scale), depression (Self-reporting Depression Scale), and anxiety (Self-Rating Anxiety Scale).

RESULTS

The prevalence of internet addiction was 7.7% in these Chinese college students. Logistic regression analysis showed that good relationship with mother (1.730 [1.075, 2.784]), good relationship with father (0.615 [0.427, 0.885]), family history of mental disorders (2.291 [1.122, 4.676]), anxiety (1.987 [1.382, 2.857]), depression (2.016 [1.384, 2.937]), suicidal ideation (2.266 [1.844, 2.784]), and suicide attempts (1.672 [1.258, 2.224]) were independent correlates for internet addiction, the adjusted R square for this model is 13.7%. Furthermore, the prevalence of suicide attempts among internet addiction participants was 21.4%, and anxiety (3.397 [1.058, 10.901]), suicidal ideation (26.984 [11.538, 63.112]), and suicide plans (8.237 [3.888, 17.451]) were the independent predictors for suicide attempts, the adjusted R square for this model is 51.6%.

CONCLUSION

Our results show that internet addiction is common among Chinese college students. In addition, suicide attempts are very common among internet addicts, suggesting that special measures and attention should be provided to these students according to risk factors to prevent their suicidal behavior.

Using Intensive Longitudinal Data to Identify Early Predictors of Suicide-Related Outcomes in High-Risk Adolescents: Practical and Conceptual Considerations

Mobile technology offers new possibilities for assessing suicidal ideation and behavior in real- or near-real-time. It remains unclear how intensive longitudinal data can be used to identify proximal risk and inform clinical decision making. In this study of adolescent psychiatric inpatients (N = 32, aged 13-17 years, 75% female), we illustrate the application of a three-step process to identify early signs of suicide-related crises using daily diaries. Using receiver operating characteristic (ROC) curve analyses, we considered the utility of 12 features-constructed using means and variances of daily ratings for six risk factors over the first 2 weeks postdischarge (observations = 360)-in identifying a suicidal crisis 2 weeks later. Models derived from single risk factors had modest predictive accuracy (area under the ROC curve [AUC] 0.46-0.80) while nearly all models derived from combinations of risk factors produced higher accuracy (AUCs 0.80-0.91). Based on this illustration, we discuss implications for clinical decision making and future research.

Adapted Dialectical Behavior Therapy for Adolescents with a High Risk of Suicide in a Community Clinic: A Pragmatic Randomized Controlled Trial

OBJECTIVE

This study is a pragmatic randomized controlled trial, which compares the effectiveness of an adapted form of Dialectical Behavior Therapy for Adolescents (DBT-A) and treatment as usual plus group sessions (TAU + GS) to reduce suicidal risk for adolescents in a community health mental clinic.

METHOD

Thirty-five adolescents from a community outpatient clinic, with repetitive NSSI alone or with SA over the last 12 months and with current high suicide risk as assessed by the Columbia-Suicide Severity Rating Scale (C-SSRS), were enrolled. Participants were randomly assigned to undergo either DBT-A (n = 18) or TAU + GT (n = 17) treatments over a 16-week period. Primary outcomes were the difference between NSSI and SA recorded during the first 4 weeks and the final 4 weeks of treatment. Secondary outcomes included changes in Children's Global Assessment Scale (C-GAS), Suicidal Ideation Questionnaire (SIQ-JR), and Beck Depression Inventory-II (BDI-II).

RESULTS

Dialectical Behavior Therapy for Adolescents was more effective than TAU + GS at reducing NSSI, use of antipsychotics, and improving C-GAS. No SAs were reported in the two groups at the end of the treatment. Both treatments were equally effective in decreasing SIQ-JR and BDI-II scores.

CONCLUSIONS

These findings support the feasibility and effectiveness of DBT-A for adolescents at high risk of suicide in community settings.

Modeling the suicidal behavior cycle: Understanding repeated suicide attempts among individuals with borderline personality disorder and a history of attempting suicide

OBJECTIVE

Suicide remains a leading cause of death in the United States, and recent reports have suggested the suicide rate is increasing. One of the most robust predictors of future suicidal behavior is a history of attempting suicide. Despite this, little is known about the factors that reduce the likelihood of reattempting suicide. This study compares theoretically derived suicide risk indicators to determine which factors are most predictive of future suicide attempts.

METHOD

We used data from a randomized, controlled trial comparing 3 forms of dialectical behavior therapy (DBT; Linehan et al., 2015). Participants (N = 97, mean age = 30.3 years, 100% female, 71% White) met criteria for borderline personality disorder and had repeated and recent self-injurious behavior. Assessments occurred at 4-month intervals throughout 1 year of treatment and 1 year of follow-up. Time-lagged generalized linear mixed models (GLMMs) were used to evaluate relationship satisfaction, emotion dysregulation, and coping styles as predictors of suicide attempts.

RESULTS

Both univariate and multivariate models suggested that higher between-person variance in problem-focused coping and lack of access to emotion regulation strategies were weakly associated with additional suicide attempts over the 2-year study. Within-person variance in the time-lagged predictors was not associated with subsequent suicide attempts.

CONCLUSIONS

Among individuals with a recent suicide attempt, problem-focused coping and specific deficits in emotion regulation may differentiate those likely to reattempt from those who stop suicidal behavior during and after psychotherapy. These results suggest that treatments for recent suicide attempters should target increasing problem-focused coping and decreasing maladaptive emotion regulation skills. (PsycInfo Database Record (c) 2020 APA, all rights reserved).

Proportion of Individuals With Past-Year Suicidal Ideation Who Attempted Suicide Over the Past 10 Years in the United States, and the Influence of Age and Sex

Background: In recent years, the rate of death by suicide has been increasing disproportionately among females and young adults in the United States. Presumably this trend has been mirrored by the proportion of individuals with suicidal ideation who attempted suicide. Aim: We aimed to investigate whether the proportion of individuals in the United States with suicidal ideation who attempted suicide differed by age and/or sex, and whether this proportion has increased over time. Method: Individual-level data from the National Survey on Drug Use and Health (NSDUH), 2008-2017, were used to estimate the year-, age category-, and sex-specific proportion of individuals with past-year suicidal ideation who attempted suicide. We then determined whether this proportion differed by age category, sex, and across years using random-effects meta-regression. Overall, age category- and sex-specific proportions across survey years were estimated using random-effects meta-analyses. Results: Although the proportion was found to be significantly higher among females and those aged 18-25 years, it had not significantly increased over the past 10 years. Limitations: Data were self-reported and restricted to past-year suicidal ideation and suicide attempts. Conclusion: The increase in the death by suicide rate in the United States over the past 10 years was not mirrored by the proportion of individuals with past-year suicidal ideation who attempted suicide during this period.

Primary and Secondary Prevention of Youth Suicide

Youth suicide is a national and global public health crisis. Pediatricians can use primary and secondary prevention strategies to intervene with youth before or after the onset of suicidal behaviors. Universal suicide risk screening programs can be used to identify youth in medical settings who may otherwise pass through the health care setting with undetected suicide risk. Pediatricians are uniquely positioned to help foster resilience in their young patients and equip families of at-risk youth with safety plans and lethal means safety counseling. Pediatricians on the frontlines of this critical public health crisis require education and training in detecting suicide risk, managing those who screen positive, and connecting their patients to much needed mental health interventions and treatments. Evidence-based suicide risk screening and assessment tools, paired with interventions, are feasible and potentially life-saving in the medical setting.

Effectiveness of a Flexible and Continuous Case Management Program for Suicide Attempters

The purpose of this study was to investigate the effect of continuous case management with a flexible approach on the prevention of suicide by suicide reattempt in a real clinical setting. The subjects in this study were 526 suicide attempters who visited emergency rooms in a teaching hospital in South Korea. Subjects were provided a continuous case management program with a flexible approach according to the severity of their suicide risk and needs. During the entire observation period (from 182 days to 855 days, mean = 572 ± 254), 18 patients (3.7%) died by suicide reattempt: Eight patients (2.27%) in the case management group and 10 patients (7.35%) in the no-case management group. The Cox regression analysis showed that the case management group had a 75% lower risk of death from suicide attempts than the no-case management group (HR = 0.34, 95% CI = 0.13–0.87). This result was shown to be more robust after adjusting for confounding factors such as gender, age, psychiatric treatment, suicide attempts, and family history of suicide (adjusted HR = 0.27, 95% CI = 0.09–0.83). This study was conducted in a single teaching hospital and not a randomized controlled one. A flexible and continuous case management program for suicide attempters is effective for preventing death by suicide reattempts.

Methods Matter: Nonsuicidal Self-Injury in the Form of Cutting is Uniquely Associated with Suicide Attempt Severity in Patients with Substance Use Disorders

OBJECTIVE

Despite the robust relation between nonsuicidal self-injury (NSSI) and suicidal behaviors, there is considerable heterogeneity in NSSI characteristics that may have implications for the strength of the NSSI-suicide attempt relation. Past research highlights the relevance of both more severe NSSI methods and NSSI in the form of cutting in particular to suicide attempts. To further explore the relations of specific NSSI methods to suicide attempts, this study examined relations between different NSSI methods (i.e., those involving cutting, burning, blunt force, or resulting in minor tissue damage) and both overall suicide attempts and two indicators of suicide attempt severity (attempts requiring medical attention and nonambivalent attempts) in 203 substance-dependent patients in residential treatment.

METHOD

Participants were administered questionnaires and semistructured interviews assessing the variables of interest.

RESULTS

Cutting was the only NSSI method to demonstrate significant relations with overall suicide attempts, nonambivalent suicide attempts, and suicide attempts requiring medical attention. Results remained when considering relevant covariates.

CONCLUSION

Results highlight an important link between NSSI methods involving cutting and suicide attempts among patients with substance use disorders. Findings also highlight the importance of more fine-grained characterizations of NSSI subgroups.

Psychological Characteristics and Addiction Propensity According to Content Type of Smartphone Use

The aim of this study was to evaluate the association between content type of smartphone use and psychological characteristics and addiction propensity, including the average time of smartphone use and problematic smartphone use. Data were obtained from the 2017 Korea Youth Risk Behavior Web-Based Survey, a nationally representative survey of middle- and high-school students (n = 62,276). The content type of smartphone use was divided into four categories: (1) Study, (2) Social-Networking Services (SNS), (3) Game, and (4) Entertainment. The association of depressive mood and suicidal ideation with content type of smartphone use was analyzed, using multiple and binary logistic regression analyses, respectively. The relationship between content type of smartphone use and time spent on smartphone use and problematic smartphone use was analyzed by using multiple logistic regression, adjusted for related covariables. The results of this study revealed that depressive mood and suicidal ideation were significantly associated with the SNS smartphone use group, compared with the other groups. Our results also indicate that the SNS group showed higher addiction propensity, such as overuse and experiencing adverse consequences of smartphone use.

A Comparison of Self-Harm Presentations to Emergency Services

Background: In the Diagnostic and Statistical Manual of Mental Disorders, 5th Edition, the distinction between nonsuicidal self-injury (NSSI) and suicide attempts (SA) is highlighted in the section of conditions for further study. Aims: The objective of this study was to examine the correlates of people who presented to emergency departments (ED) with NSSI compared with those who presented with SA and no self-harm or suicidal ideation (no SH or SI). Method: Data came from 4,772 presentations to ED of tertiary care hospitals in Manitoba, Canada, between January 2009 and June 2012. Chart reviews were conducted for presentations with NSSI (n = 158), and a sample of SA (n = 172) and no SH or SI (n = 173). Results: NSSI was associated with borderline personality traits/disorders, previous history of SH, and aggression/impulsivity compared with no SH or SI. SA was associated with a lower likelihood of adjustment disorder (OR = 0.58; 95 % CI [0.34, 0.99]) and previous history of NSSI (OR = 0.30; 95 % CI [0.17, 0.53]) compared with NSSI. Limitations: A limitation of this study is its cross-sectional design. Conclusion: Given the distress associated with NSSI, the findings highlight the need for treatment plans that address all those who present to ED with SH regardless of intent.

Influence of the history of abuse and suicidal attempts behavior among women victims of violence in Nicaragua

Suffering traumatic experiences linked to violence seems to be related to suicide attempts, especially, when the physical or sexual abuse has been experienced at an early age. This study examines the relationship between the history of abuse and suicide attempts among women victims of violence living in poverty in Nicaragua. This sample was subjected to a particularly serious range of stressful situations and experiences related to violence throughout their lives. The results show that women who experienced abuse during childhood were more likely to report a history of suicide attempts than women without a history of childhood abuse. Therefore, suicide attempts seem to be related more to those traumatic experiences during childhood than to violence suffered afterward. Identifying this type of abuse is particularly important because of its implications for the victims' health, as suicide attempts are maladaptive behaviors with which the women in the sample could have been addressing the trauma they experienced in their childhood. It is, therefore, necessary to highlight this problem in a developing country, which has been the focus of a limited number of studies, and where there are no support mechanisms for victims whose rights have been violated.

Self-Harm, Suicidal Ideation, and Suicide Attempts in Chinese Adolescents Involved in Different Sub-types of Bullying: A Cross-Sectional Study

Background: Bullying tends to peak during adolescence, and it is an important risk factor of self-harm and suicide. However, research on the specific effect of different sub-types of bullying is limited. Objective: The purpose of this study is to examine the associations between four common forms of bullying (verbal, physical, relational, and cyber) and self-harm, suicidal ideation (SI), and suicide attempts (SA). Method: This was a cross-sectional study of a sample including 4,241 Chinese students (55.8% boys) aged 11 to 18 years. Bullying involvement, self-harm, SI, and SA were measured via The Juvenile Campus Violence Questionnaire (JCVQ). The association was examined through multinomial logistic regression analysis, adjusted for demographic characteristics and psychological distress. Results: Bullying victimization and perpetration were reported by 18.0 and 10.7% of participants. The prevalence of self-harm, SI, and SA were 11.8, 11.8, and 7.1%, respectively. Relational bullying victimization and perpetration were significantly associated with SI only, SI plus self-harm, and SA. Physical bullying victimization and perpetration were risk factors of self-harm only and SA. Verbal victimization was significantly associated with SI only. Cyber perpetration was a risk factor of SA. Conclusions: The findings highlight the different effects of sub-types of bullying on self-harm and suicidal risk. Anti-bullying intervention and suicide prevention efforts should be prior to adolescents who are involved in physical and relational bullying.

Suicide Attempts among Those with Migraine: Findings from a Nationally Representative Canadian Study

The objectives of this study were to identify the gender-specific prevalence of suicide attempts among those with migraine and to examine what factors are associated with suicide attempts among migraineurs. This study was a nationally representative analysis of the 2012 Canadian Community Health Survey - Mental Health (CCHS-MH) with 21,744 respondents, of whom 2,223 had migraine. Bivariate and logistic regression analyses were conducted. Those with migraine had a much higher prevalence of ever attempting suicide than those without migraine (men: 7.5% vs 1.9%; women; 9.3% vs 2.7%, p < .001). Among migraineurs, the odds of suicide attempts were higher among poorer respondents, those in chronic pain and those with a history of childhood adversities, substance dependence and/or mental illness. Targeted outreach is needed to reduce suicidality in this vulnerable population.

Body Trust and Agitation: Pathways to Suicidal Thoughts and Behaviors

Research has linked agitation and low body trust to suicidal thoughts and behaviors. We investigated a pathway with agitation accounting for the relationship between body trust and suicidality. 511 individuals recruited via MTurk (Study 1) and 167 undergraduate students (62.9% with suicide attempt history) (Study 2) completed measures of study variables. For ideation, the proposed pathway was significant across samples, as was a pathway with agitation predicting and body trust mediating. In Study 1, agitation explained the relationship between body trust and attempt history. In Study 2, neither independent variable was related to attempt history. Results suggest body trust is independently associated with suicidal ideation. Results were discrepant regarding suicide attempt history, necessitating future studies.

"Out, out, brief candle! Life's but a walking shadow": 5-HTTLPR Is Associated With Current Suicidal Ideation but Not With Previous Suicide Attempts and Interacts With Recent Relationship Problems

BACKGROUND

Suicide is an unresolved psychiatric and public health emergency, claiming 800,000 lives each year, however, its neurobiological etiology is still not understood. In spite of original reports concerning the involvement of 5-HTTLPR in interaction with recent stress in the appearance of suicidal ideation and attempts, replication studies have yielded contradictory results. In our study, we analyzed the association between 5-HTTLPR and lifetime suicide attempts, current suicidal ideation, hopelessness and thoughts of death as main effects, and in interaction with childhood adversities, recent stress, and different types of recent life events in a general population sample.

METHODS

Two thousand and three hundred fifty-eight unrelated European volunteers were genotyped for 5-HTTLPR, provided phenotypic data on previous suicide attempts, and current suicidal ideation, hopelessness and thoughts about death, and information on childhood adversities and recent life events. Logistic and linear regression models were run with age, gender, and population as covariates to test for the effect of 5-HTTLPR as a main effect and in interaction with childhood adversities and recent life events on previous suicide attempts and current suicidal ideation. Benjamini-Hochberg FDR Q values were calculated to correct for multiple testing.

RESULTS

5-HTTLPR had no significant effect on lifetime suicide attempts either as a main effect on in interaction with childhood adversities. 5-HTTLPR had a significant main effect on current suicidal ideation in the dominant model (Q=0.0344). 5-HTTLPR did not interact with childhood adversities or total number of recent life events on any phenotypes related to current suicidal risk, however, a significant interaction effect between 5-HTTLPR and current relationship problems emerged in the case of current suicidal ideation in the dominant model (Q=0.0218) and in the case of thoughts about death and dying in the dominant (Q=0.0094) and additive models (Q=0.0281).

CONCLUSION

While 5-HTTLPR did not influence previous suicide attempts or interacted with childhood adversities, it did influence current suicidal ideation with, in addition, an interaction with recent relationship problems supporting the involvement of 5-HTTLPR in suicide. Our findings that 5-HTTLPR impacts only certain types of suicide risk-related behaviors and that it interacts with only distinct types of recent stressors provides a possible explanation for previous conflicting findings.

Predictors of Suicidal Behaviors during Hospitalization among Adolescents Admitted Due to Suicidal Behaviors: A 10-Year Retrospective Naturalistic Study

Objectives: Suicidality during hospitalization is a common phenomenon with potential devastating consequences. We attempted to identify risk factors for in-hospital suicidality in a high risk group of adolescent inpatients hospitalized for suicidal behaviors (SB). Methods: The database of a tertiary adolescent psychiatric ward was screened for patients hospitalized consecutively for SB during 2001-2010. Data on documented demographic, clinical, and behavioral risk factors were collected. Suicidal events during hospitalization were classified according to the Columbia Classification Algorithm of Suicide Assessment. Results: The sample included 122 inpatients (53% female) aged 10-19 (Mean=15.77, Standard Deviation=2.89) years admitted for SB. Thirty-seven youth (30%) exhibited SB during the hospitalization period (the "suicidal group"), ten of which attempted suicide while hospitalized. There were no significant differences in demographic and clinical parameters between the suicidal and the non-suicidal groups. Younger age, history of drug use and a history of non-suicidal self-injury (NSSI) were independent predictors of a SA during hospitalization. A previous SA added significant risk to SA during hospitalization only in the group that had a history of NSSI. Conclusions: A high risk of SB exists among adolescents hospitalized for suicidality. The risk assessment for SA during hospitalization should include age, history of drug use and previous SA combined with a history of NSSI. Future studies should expand the efforts to identify potential risk factors of SB during hospitalization in this unique high-risk group.