A closer look at self-reported suicide attempts: false positives and false negatives

Temporal Patterns of Suicidality Among Adolescents Receiving Behavioral and Mental Health Services in the Community: A Survival Analysis

Adolescent suicide is a major public health concern, particularly among adolescents who have endured Adverse Childhood Experiences (ACEs). Adolescents who have been exposed to multiple ACEs are as much as three times more likely to present with suicidality compared to the general adolescent population. Adolescents who have been exposed to multiple ACEs are also more likely to receive behavioral and mental health services in the community. It is therefore important to understand patterns of suicidality among this sub-population of adolescents in order to provide the best clinical care. The present study examined the temporal patterns of suicidality among adolescents who have been exposed to multiple ACEs and are receiving behavioral and mental health services in the community. Using Electronic Health Record (EHR) data from a community-based behavioral and mental health care organization, an exploratory survival analysis was conducted on time to suicidal thoughts and behaviors (STBs) after suicidality risk screen at intake. Average time from suicidality risk screen at intake to STB was 185 days (6.2 months). Youth who screened negative for suicidality risk at intake had a longer survival time than youth who screened positive for suicidality risk, and the survival distributions between the two groups was significant. Predictors of STBs were also examined, with gender being a significant predictor of an STB occurring during the follow-up period. These findings may be used to guide suicidality screening and clinical practice at community-based behavioral and mental health care organizations serving adolescents who have been exposed to multiple ACEs.

The development of suicide risk in people with severe mental disorders during the first year of the COVID-19 pandemic: a claims-based cohort study

PURPOSE

In this study, we assess how the first and second waves of the COVID-19 pandemic influenced the suicide risk of patients with severe mental disorders in Germany.

METHODS

We analyzed German health insurance claims data to compare the suicide risk of patients with severe mental disorders before and during the pandemic. We included n = 690,845 patients between October 2019 and March 2020 and n = 693,457 patients the corresponding period of the previous year and applied entropy balancing to adjust for confounding covariates. Given that the cause of death was unknown, we defined potential suicides as deaths of patients with a history of intentional self-harm whose passing could not be explained by COVID-19. Potential suicides were tracked in both cohorts over one year and compared using logistic regression.

RESULTS

128 potential suicides were identified in the period during and 101 before the pandemic. This corresponded to a significant increase in the risk for potential suicide of 27.4% compared to the control period (β = 0.24, z = 1.82, p < 0.05).

CONCLUSION

The noticeable increase in the risk for potential suicide for patients with severe pre-existing mental disorders emphasizes the call for additional efforts to prevent suicide and to help patients cope with their mental illness in the aftermath of the COVID-19 crisis.

Pain tolerance and threshold in suicide attempters: A systematic review and meta-analysis

It has been hypothesized that individuals less sensitive to pain could be at higher risk of suicide. However, data on pain sensitivity in suicide attempters (SA) obtained using experimental procedures are heterogeneous. The aim of this systematic review and meta-analysis was to investigate and compare pain tolerance and threshold in SA (patients with lifetime history of suicide attempt), non-attempters (psychiatric controls, PC), and healthy controls (HC). A random effects meta-analysis was used to estimate the standardized mean differences using data from 16 studies that compared physical pain tolerance and threshold in SA and PC or HC. Pain tolerance and threshold were not significantly different in SA and PC. However, pain tolerance, but not threshold, was higher in SA than HC. Our findings do not support the hypothesis of an altered pain perception related as a trait for suicidal vulnerability, but rather suggest altered pain perception related to psychiatric vulnerability.

Suicidal urges and attempted suicide at multiple time scales in borderline personality disorder

BACKGROUND

There is strong evidence for an enduring suicidal diathesis among individuals with a history of suicide attempts, particularly among people diagnosed with borderline personality disorder (BPD). However, the progression of suicidal crises among people predisposed to suicidal behavior remains poorly understood.

METHODS

Via multilevel structural equation modeling we tested the hypothesis that a history of attempted suicide predicts a stronger dynamic link between affect and impulsivity with suicidal ideation (i.e., suicidal urges) - both moment-to-moment and day-to-day. 153 patients diagnosed with BPD, 105 of whom had a history of medically serious suicide attempts completed a 21-day ecological momentary assessment protocol (17,926 total assessments).

RESULTS

Individuals with higher average levels of negative affect reported more suicidal thoughts. Moments characterized by more negative affect, hostility, impulsivity, and less positive affect were also characterized by elevated suicidal ideation. For hostility and positive affect, these significant links generalized to the daily level. At the same time, for negative affect and hostility the within-person coupling was stronger among attempters in comparison to non-attempters, and these effects did not significantly differ across timescales.

LIMITATIONS

Follow-up studies replicating our findings of the dysregulation-suicidality nexus in clinically more diverse samples are needed.

CONCLUSIONS

The diathesis for suicidal behavior manifests in tighter dynamic links between negative affect or hostility and suicidal ideation. Because these within-person links were amplified in attempters compared to non-attempters, differential coupling patterns may index potentially lethal processes that generalize beyond BPD reflecting distinct diathesis components.

Socioeconomic inequalities in the risk of suicide attempts among sexual minority adolescents: Findings from the UK's Millennium Cohort Study

Background

Both sexual minority and socioeconomically deprived young people are at an increased risk of making a suicide attempt. Intersectionality theory predicts these risk factors will interact synergistically to create unique vulnerabilities. We investigated the risk of suicide attempts in sexual minority socioeconomically deprived young people in a contemporary national cohort.

Methods

The Millennium Cohort Study (MCS) is a birth cohort study in the UK following children born 2000-2002. Children in the MCS have been followed up over seven sweeps to date at ages 9 months, 3, 5, 7, 11, 14 and 17 years. The relative risk (RR) of self-reported suicide attempts at 17 years by sexual minority status and parental unemployment was estimated using multivariable log-binomial regression. Additive interaction, representing the synergistic effect, was estimated using the relative excess risk due to interaction (RERI).

Findings

Between January, 2018 and March, 2019, 10,247 adolescents provided their sexuality and parents their employment status. 758 (7.4%) of 10,247 adolescents had made a suicide attempt. Relative to heterosexual young people living with no unemployed parents, the RR for sexual minorities living with no unemployed parents/carers was 2.93 (95% CI 2.26-3.79), one unemployed was 4.46 (95% CI 2.94-6.77), and two was 6.35 (95% CI 3.62-11.14). There was evidence of a positive additive interaction. The RERI for having one unemployed parent was 1.08 (95% CI -0.54 to 2.69) and two was 3.10 (95% CI -1.58 to 7.78). Sensitivity analyses using housing tenure and in a sample with no missing data generated comparable results.

Interpretation

To our knowledge, this is the first evidence that socioeconomically deprived sexual minority adolescents are uniquely vulnerable to making a suicide attempt. Health and educational practitioners need to be aware of the increased risk of suicide attempts in socioeconomically deprived sexual minority adolescents.

Funding

Economic and Social Research Council (ESRC).

Integrating a functional view on suicide risk into idiographic statistical models

Acute risk of death by suicide manifests in heightened suicidal ideation in certain contexts and time periods. These increases are thought to emerge from complex and mutually reinforcing relationships between dispositional vulnerability factors and individually suicidogenic short-term stressors. Together, these processes inform clinical safety planning and our therapeutic tools accommodate a reasonable degree of idiosyncrasy when we individualize interventions. Unraveling these multifaceted factors and processes on a quantitative level, however, requires estimation frameworks capable of representing idiosyncrasies relevant to intervention and psychotherapy. Using, data from a 21-day ambulatory assessment protocol that included six random prompts per day, we developed personalized (i.e., idiographic) models of interacting risk factors and suicidal ideation via Group Iterative Multiple Model Estimation (GIMME) in a sample of people diagnosed with borderline personality disorder (N = 95) stratified for a history of high lethality suicide attempts. Our models revealed high levels of heterogeneity in state risk factors related to suicidal ideation, with no features shared among the majority of participants or even among relatively homogenous clusters of participants (i.e., empirically derived subgroups). We discuss steps toward clinical implementation of personalized models, which can eventually capture suicidogenic changes in proximal risk factors and inform safety planning and interventions.

How we ask matters: The impact of question wording in single-item measurement of suicidal thoughts and behaviors

The present study aimed to extend prior literature on single-item assessment by examining response consistency (1) between several commonly used single-item assessments of suicidal ideation, planning, and attempts, and (2) across three timeframes (past month, past year, and lifetime) commonly employed in the literature. Participants (N = 613) were recruited from an online community, Amazon Mechanical Turk (mTurk). Participants were administered three sets of four distinct single-items assessing suicidal ideation, suicidal planning, and suicide attempt history, respecitvely. Items were drawn from well-known large-scale studies (e.g., National Comorbidity Survey; World Health Organization Mental Health Survey Initiative, Youth Risk Behavior Survey) and commonly used suicide risk assessments (i.e., Self-Injurious Thoughts and Behaviors Interview). Through examinations of intraclass correlations and confirmatory factor analyses, findings suggested mixed response agreement across most outcomes and timeframes. Response inconsistency among items assessing suicidal ideation and among items assessing suicidal planning were partly attributed to minor, yet important, language differences. Given findings that even minor language changes in suicidal ideation and planning items may inflate or restrict prevalence estimates in a meaningful way, it will be important for researchers and clinicians alike to pay close attention to the wording of single items in designing research studies, interpreting findings, and assessing patient risk.

Prevalence and correlates of suicidal ideation and suicide attempts in preadolescent children: A US population-based study

The present study evaluated sociodemographic and diagnostic predictors of suicidal ideation and attempts in a nationally representative sample of preadolescent youth enrolled in the Adolescent Brain Cognitive Development Study. Rates and predictors of psychiatric treatment utilization among suicidal youth also were examined. Eleven thousand eight hundred and seventy-five 9- and 10-year-old children residing in the United States were assessed. Children and their parents/guardians provided reports of children's lifetime history of suicidal ideation, suicide attempts, and psychiatric disorders. Parents also reported on sociodemographic characteristics and mental health service utilization. Multivariate logistic regression analyses were employed to evaluate sociodemographic and diagnostic correlates of suicidal ideation, suicide attempts among youth with suicidal ideation, and treatment utilization among youth with suicidal ideation and suicide attempts. Lifetime prevalence rates were 14.33% for suicidal ideation and 1.26% for suicide attempts. Youth who identified as male, a sexual minority, or multiracial had greater odds of suicidal ideation, and sexual minority youth and youth with a low family income had greater odds of suicide attempts. Comorbid psychopathology was associated with higher odds of both suicidal ideation and suicide attempts. In youth, 34.59% who have suicidal ideation and 54.82% who had attempted suicide received psychiatric treatment. Treatment utilization among suicidal youth was lower among those who identified as female, Black, and Hispanic. Suicidal ideation and attempts among preadolescent children are concerningly high and targeted assessment and preventative efforts are needed, especially for males, racial, ethnic, and sexual minority youth, and those youth experiencing comorbidity.

State earned income tax credits and suicidal behavior: A repeated cross-sectional study

Suicide is an increasingly common cause of death in the United States and recent increases in suicide rates disproportionately impact low income individuals. We sought to assess the impact of income support in the form of state earned income tax credit policies on suicide-related behaviors. This state-level study used repeated cross-sectional data from vital records and the National Survey of Drug Use and Health data representative at the state-level. The population included adults who either died by suicide or were selected for in-person NSDUH interviews between 2008 and 2018. Exposure was measured as the generosity of a refundable state earned income tax credit policy measured as a percentage of the federal policy. Outcomes assessed were suicidal ideation, suicidal planning, non-fatal suicide attempt, suicide deaths, and combined fatal and non-fatal suicide attempts. Analyses were performed between April and June 2020. A 10 percentage-point increase in the generosity of state earned income tax credit was associated with lower frequency of non-fatal suicide attempts (prevalence ratio [PR] = 0.96; 95% CI: 0.93-0.99), combined fatal and non-fatal suicide attempts (PR = 0.96; 95% CI: 0.93-0.99), and suicide deaths (PR = 0.99; 95% CI: 0.99-1.00). This translates to 4 fewer suicide attempts per 10,000 population each year. Generous state earned income tax credit policies are associated with reductions in the frequency of most severe suicidal behavior. Income support policies may be one way to reduce suicide attempts and death, especially among low-income adults.

Association Between Stroke and Subsequent Risk of Suicide: A Systematic Review and Meta-Analysis

BACKGROUND AND PURPOSE

Poor mental health and depression are well-recognized sequelae of stroke; however, the association between stroke and subsequent risk of suicide is unknown.

METHODS

We systematically searched MEDLINE, Embase, PsycINFO, and Google Scholar from their inception to September 15, 2020, using keywords and database-specific subjects. We independently adjudicated and selected observational studies that reported suicide attempts or death by suicide in stroke survivors and a comparison group, consisting either of people without a history of stroke or the general population. We evaluated study quality using the Newcastle Ottawa scale. Using random-effects meta-analysis, we calculated the pooled adjusted risk ratio (RR) of suicide in stroke survivors and separately calculated the pooled adjusted RR of suicide attempt and death by suicide. Using prespecified analyses, we explored study-level factors to explain heterogeneity.

RESULTS

We screened 4093 articles and included 23 studies of fair quality, totaling over 2 million stroke survivors, of whom 5563 attempted suicide or died by suicide. Compared to the nonstroke group, the pooled adjusted RR of suicide in stroke survivors was 1.73 (95% CI, 1.53-1.96, I²=93%), with a significantly (P=0.03) higher adjusted risk of suicide attempt (RR, 2.11 [1.73-2.56]) than of death by suicide (RR, 1.61 [1.41-1.84]). A longer follow-up time in cohort studies was associated with a lower risk of suicide (RR, 0.97 [0.95-0.99] for every 1-year increase).

CONCLUSIONS

Stroke should be considered as a risk factor for suicide. Comprehensive strategies to screen and treat depression and suicidal ideation in stroke survivors should be developed to reduce the burden of suicide in stroke survivors.

Age, period, and cohort patterns in the epidemiology of suicide attempts among sexual minorities in the United States and Canada: detection of a second peak in middle adulthood

PURPOSE

Sexual minority adults experience fivefold greater risk of suicide attempt, as compared with heterosexuals. Establishing age-specific epidemiological patterns of suicide is a prerequisite to planning interventions to redress the sexual orientation suicide inequity, and such patterns must be carefully interpreted in light of correlated period and cohort effects. We, therefore, combined US and Canadian data (1985-2017) from primary (two pooled multi-year national surveys, N = 15,477 and N = 126,463) and secondary (published, meta-analytic, N = 122,966) sources to separately estimate age, period, and cohort trends in self-reported suicide attempts among sexual minorities.

METHODS

Age- and gender-stratified cross-sectional data were used to infer age and cohort effects. Age-collapsed meta-analyzed data were used to infer period effects among sexual minorities of all genders.

RESULTS

We identified a bimodal age distribution in recent suicide attempts for sexual minorities across genders, though more pronounced among sexual minority men: one peak in adolescence (18-20 years of age for both genders) and one peak nearing mid-life (30-35 years of age for men; 35-40 years of age for women). This pattern was also apparent using recall data within birth cohorts of sexual minority men, suggesting it is not an artifact of birth cohort effects. Finally, we observed decreasing trends in lifetime suicide attempt prevalence estimates for both sexual minorities and heterosexuals, though these decreases did not affect the magnitude of the sexual orientation disparity.

CONCLUSION

In the context of exclusively adolescent-focused suicide prevention interventions for sexual minorities, tailored suicide prevention for sexual minority adults should be pursued throughout the life course.

You feel it was written about you: client acceptability of a group intervention for repeat suicide attempts

BACKGROUND

Repeat attempts increase risk of death by suicide. The Psychosocial/psychoeducational Intervention for People with recurrent Suicide Attempts (PISA)/Skills for Safer Living (SfSL) is a group intervention targeting repeat attempts.

AIMS

To evaluate the acceptability of PISA/SfSL to clients and identify key model components influencing this.

METHODS

This exploratory mixed-methods study involved adults who completed PISA/SfSL (N = 16). Participants completed semi-structured interviews and a satisfaction questionnaire post-intervention, and self-report outcome measures of population specific challenges pre and post-intervention and at 6-month follow-up.

RESULTS

Qualitative themes illuminate three interrelated response processes; connection with each other and the model, taking control of life, and gaining a sense of value. Quantitative outcome measures indicated positive trends in suicidality, hopelessness, alexithymia, and problem-solving. High satisfaction levels indicated its quality, relevancy, applicability and helpfulness. Key components influencing responses were PISA/SfSL's; psychosocial group format and processes, psychoeducational and skill development content, and ethos. Results suggest PISA/SfSL was acceptable to those with repeat suicide attempts.

CONCLUSIONS

The study highlights the usefulness of group work and the importance of consistency with guidelines in suicide intervention. It supports the view that recovery in suicidality and engagement in treatment are complex processes. It adds to previous research demonstrating acceptability among facilitators.

Advancing the Understanding of Suicide: The Need for Formal Theory and Rigorous Descriptive Research

Suicide is a leading cause of death worldwide and perhaps the most puzzling and devastating of all human behaviors. Suicide research has primarily been guided by verbal theories containing vague constructs and poorly specified relationships. We propose two fundamental changes required to move toward a mechanistic understanding of suicide. First, we must formalize theories of suicide, expressing them as mathematical or computational models. Second, we must conduct rigorous descriptive research, prioritizing direct observation and precise measurement of suicidal thoughts and behaviors and of the factors posited to cause them. Together, theory formalization and rigorous descriptive research will facilitate abductive theory construction and strong theory testing, thereby improving the understanding and prevention of suicide and related behaviors.

Public Health Surveillance of Youth Suicide Attempts: Challenges and Opportunities

BACKGROUND

Surveillance of youth suicide attempts presents many challenges. To assess common data sources that capture information about youth suicidal behavior, we compared counts of high school students who reported (a) a suicide attempt and (b) an injurious suicide attempt, requiring medical treatment in the previous twelve months, with counts of suicide deaths and intentional self-injuries obtained from administrative data sources.

METHOD

Youth Risk Behavior Surveillance System (YRBSS), high school enrollments, and vital statistics were used to estimate the ratio of suicide attempts to suicide deaths among Kentucky high school students. YRBSS and enrollment data were used to estimate the number of Kentucky high school students who received medical treatment following a suicide attempt, which was compared with hospital and emergency department (ED) discharges for intentional self-injury from administrative claim records.

RESULTS

We estimated 943 students reporting a suicide attempt for every suicide death, a result that is higher than previous estimates for youth. Self-reported suicide attempts resulting in medical treatment were 7.5 times higher than self-injuries reported in claims records.

CONCLUSION

Future research should address concerns about undocumented cases of intentional self-injury in administrative claims systems; patient encounters in nonhospital settings for injuries resulting from a suicide attempt; and validity of Youth Risk Behavior Survey questions on suicidal behavior.

Suicide in DSM-5: Current Evidence for the Proposed Suicide Behavior Disorder and Other Possible Improvements

Suicide continues to be one of the greatest challenges faced by mental health clinicians and researchers, an issue made worse by increasing trends in the global suicide rate. Suicide behavior disorder (SBD) was introduced in DSM-5 as a disorder for further consideration and potential acceptance into the diagnostic system. There are numerous positive developments that would arise from the addition of a suicide-related diagnosis. Utilizing the 2009 guidelines established by Kendler and colleagues, the present review examines the evidence for SBD's validity and discusses the diagnosis' potential clinical benefits and limitations. Altogether, growing evidence indicates that SBD has preliminary validity and benefit. SBD presents with several significant limitations, however, and possible alternative additions to future DSMs are highlighted.

Comparing Suicide Risk Factors Among Individuals with a History of Aborted, Interrupted, and Actual Suicide Attempts

Recent standardized nomenclature has suggested distinctions among aborted, interrupted, and actual suicide attempts. This study examined differences in self-reported symptoms among individuals with a history of aborted, interrupted, and actual suicide attempts. 167 young adults with a history of suicidality completed self-report measures of suicide attempt history and current symptoms, a clinical interview assessing past suicidal behavior, and a pain tolerance task. Only 78.8% of participants who initially reported a suicide attempt history were classified as suicide attempters following the clinical interview. Individuals who reported only aborted attempts during the clinical interview reported less severe clinical symptoms than those reporting a history of at least one actual attempt. Individuals with a history of actual suicide attempts may represent a more clinically severe group than those with a history of aborted attempts only.

Investigating the reliability of suicide attempt history reporting across five measures: A study of US military service members at risk of suicide

OBJECTIVE

Utilizing a sample of military service members at risk of suicide, this study aimed to: (a) identify patterns of suicide attempt (SA) history reporting across five measures and (b) evaluate whether consistent SA reporters (i.e., individuals who consistently report an SA history across measures) differ from inconsistent SA reporters on other clinical severity indices.

METHOD

Participants (N = 984) completed five validated SA history measures and self-report psychiatric symptom measures.

RESULTS

Of the sample, 35.4% inconsistently responded to SA history measures. Inconsistent reporters disclosed more severe suicide threat histories than consistent reporters. On all other clinical severity indices, inconsistent reporters evinced either less severe or comparable symptom levels.

CONCLUSIONS

A nontrivial portion of service members may respond inconsistently to different assessments of SA history. Research is needed to identify factors that account for inconsistent SA history reporting and to improve the accuracy of SA history assessments among military personnel.

Effects of Multiple Forms of Information Bias on Estimated Prevalence of Suicide Attempts According to Sexual Orientation: An Application of a Bayesian Misclassification Correction Method to Data From a Systematic Review

Multiple epidemiologic studies demonstrate a disparity in suicide risk between sexual minority (lesbian, gay, bisexual) and heterosexual populations; however, both "exposure" (sexual minority status) and outcome (suicide attempts) may be affected by information bias related to errors in self-reporting. We therefore applied a Bayesian misclassification correction method to account for possible information biases. A systematic literature search identified studies of lifetime suicide attempts in sexual minority and heterosexual adults, and frequentist meta-analysis was used to generate unadjusted estimates of relative risk. A Bayesian model accounting for prior information about sensitivity and specificity of exposure and outcome measures was used to adjust for misclassification biases. In unadjusted frequentist analysis, the relative risk of lifetime suicide attempt comparing sexual minority with heterosexual groups was 3.38 (95% confidence interval: 2.65, 4.32). In Bayesian reanalysis, the estimated prevalence was slightly reduced in heterosexual adults and increased in sexual minority adults, yielding a relative risk of 4.67 (95% credible interval: 3.94, 5.73). The disparity in lifetime suicide attempts between sexual minority and heterosexual adults is greater than previously estimated, when accounting for multiple forms of information bias. Additional research on the impact of information bias in studies of sexual minority health should be pursued.

A Systematic Review and Meta-Analysis of Disparities in the Prevalence of Suicide Ideation and Attempt Among Bisexual Populations

Sexual minorities are at increased risk of suicide; however, it is unclear whether there are within-sexual minority differences in risk across specific sexual identities-notably between bisexual and lesbian/gay subgroups. We therefore conducted a systematic review and meta-analysis to quantify associations between bisexual identity and self-reported suicide ideation and attempt and the moderation of these associations by gender/sex, age, sampling strategy, and measurement of sexuality. Abstracts and full texts were independently screened by two reviewers, resulting in a total of 46 studies that met inclusion criteria and reported 12-month or lifetime prevalence estimates for suicide ideation or attempt. A consistent gradient was observed across all four outcomes, whereby bisexual respondents reported the highest proportion of suicide ideation or attempt, lesbian/gay respondents the next highest proportion, and heterosexual respondents the lowest proportion. Random-effects meta-analysis comparing bisexual individuals with lesbian/gay individuals yielded odds ratios (ORs) ranging between 1.22-1.52 across the four outcomes examined. Between-study variability in ORs was large. Thirty-one percent of heterogeneity was explained by sample type (e.g., probability vs. non-probability) and 17% by gender/sex. ORs were consistently larger for women (range: 1.48-1.95, all statistically significant at p < .05) than for men (range: 1.00-1.48, all p > .05), suggesting that gender/sex moderates the association between bisexual identity and suicide risk. Within-sexual minority differences in suicide risk may be attributed to structural and interpersonal experiences of monosexism, bisexual erasure and invisibility, or lack of bisexual-affirming social support, each of which may be experienced differently across gender/sex identities.

The TRKB rs2289656 genetic polymorphism is associated with acute suicide attempts in depressed patients: A transversal case control study

INTRODUCTION

Suicide Attempts (SA) are the main complications of Major Depressive Episodes (MDE) and are difficult to predict. Suicide is associated with the expression of Receptor Tyrosin-Kinase B (TRKB), the receptor of the Brain Derived Neurotrophic Factor (BDNF) involved in MDE. However, the impact of its genetic polymorphisms as predictive factors of SA should be clarified. Our main aim is to assess the association of 8 TRKB genetic polymorphisms and SA in depressed patients.

MATERIAL AND METHODS

In 624 patients currently experiencing an MDE in the context of Major Depressive Disorder (MDD) (METADAP study), we assessed the association between 8 TRKB genetic polymorphisms (rs1778933, rs1187352, rs2289658, rs2289657, rs2289656, rs3824519, rs56142442 and rs1439050) and acute (previous month) or past (older than one month) SA. Bonferroni corrections and multivariate analysis adjusted for age, sex, level of education, marital status, Hamilton Depression Rating Scale score and previous MDE were used.

RESULTS

The rs2289656 was associated with acute SA (CC = 28.5%, CT = 15.0% and TT = 11.5%, p = 0.0008). However, the other SNPs were not. Patients with the CC genotype had a higher rate of acute SA (28.5%) as compared to T carriers (14.6%) (adjusted OR = 2.2, CI95% [1.4; 3.5], p<0.0001).

CONCLUSION

The TRKB rs2289656 CC genotype is associated with a 2.2 fold higher risk of acute SA in depressed patients. If this result could be confirmed, this TRKB SNP may be assessed to contribute to the prediction of SA in depressed patients.

The Differentiating Role of State and Trait Hopelessness in Suicidal Ideation and Suicide Attempt

With suicide being a leading cause of death in the United States, research must aim to increase efficacious prevention methods. The purpose of the present study was to gain greater understanding of the difference between suicidal ideation and suicide attempt. Previous research emphasizes the role of hopelessness in attempts and ideation (Bagge, Lamis, Nadorff, & Osman, 2014 ). Yet while hopelessness offers predictive value to suicide attempt, it fails in discriminating between suicide attempters and suicide ideators. Thus the goal was to examine the possible influence of different types of hopelessness on suicidal ideation and attempt. The experience of hopelessness as a temporary feeling, or state, versus as an enduring emotion, or trait, was examined in this study. The State-Trait Hopelessness Scale and 4 suicidal thought and suicidal behavior questions were assessed. Results of logistic regression analysis supported the hypothesis that state and trait hopelessness were differentially associated with ideation and attempt. While trait hopelessness was significantly positively associated with responses to all 4 suicidality questions (p's < 0.001), state hopelessness was only positively related to responses to 1 ideation question (p < 0.01). In all, these results point to the importance of understanding the role of different types of hopelessness in differentiating suicidal ideation and attempt.

Academic and non-academic predictors of student psychological distress: the role of social identity and loneliness

BACKGROUND

University students experience high rates of stress and mental illness; however, few studies have comprehensively examined the impact of academic and non-academic stressors on student mental health. Similarly, there has been little focus on the role of social groups in protecting against mental distress in this young adult group.

AIM

To identify the key social determinants of mental health symptoms in a student population.

METHODS

Using an online survey, we administered measures of social connectedness and mental health symptoms alongside academic and non-academic stressors to a large sample of UK university students.

RESULTS

Loneliness was the strongest overall predictor of mental distress, while assessment stress was the most important academic predictor. Strong identification with university friendship groups was most protective against distress relative to other social identities, and the beneficial impact of identification on symptoms was mediated by reduced loneliness.

CONCLUSIONS

The study highlights the benefits of establishing strong social connections at university and the importance of minimising stress associated with assessment tasks.

The Impact of Validity Screening on Associations Between Self-Reports of Bullying Victimization and Student Outcomes

Self-report surveys are widely used to measure adolescent risk behavior and academic adjustment, with results having an impact on national policy, assessment of school quality, and evaluation of school interventions. However, data obtained from self-reports can be distorted when adolescents intentionally provide inaccurate or careless responses. The current study illustrates the problem of invalid respondents in a sample (N = 52,012) from 323 high schools that responded to a statewide assessment of school climate. Two approaches for identifying invalid respondents were applied, and contrasts between the valid and invalid responses revealed differences in means, prevalence rates of student adjustment, and associations among reports of bullying victimization and student adjustment outcomes. The results lend additional support for the need to screen for invalid responders in adolescent samples.

Acute suicidal affective disturbance: Factorial structure and initial validation across psychiatric outpatient and inpatient samples

BACKGROUND

A new clinical entity, Acute Suicidal Affective Disturbance (ASAD), was recently proposed to characterize rapid-onset, acute suicidality including the cardinal symptom of behavioral intent. This study examines the proposed ASAD criteria factor-analytically and in relation to correlates of suicidal behavior and existing psychiatric disorders in samples of psychiatric outpatients and inpatients.

METHODS

Two samples of psychiatric outpatients (N=343, aged 18-71 years, 60.6% female, 74.9% White) and inpatients (N=7,698, aged 15-99 years, 57.2% female, 87.8% White) completed measures of their ASAD symptoms and psychological functioning.

RESULTS

Across both samples, results of a confirmatory factor analysis supported the unidimensional nature of the ASAD construct. Additionally, results provided evidence for the convergent and discriminant validity of ASAD, demonstrating its relation to, yet distinction from, other psychiatric disorders and correlates of suicide in expected ways. Importantly, ASAD symptoms differentiated multiple attempters, single attempters, and non-attempters, as well as attempters, ideators, and non-suicidal patients, and was an indicator of past suicide attempts above and beyond symptoms of depression and other psychiatric disorders.

LIMITATIONS

This study utilized cross-sectional data and did not use a standardized measure of ASAD.

CONCLUSIONS

ASAD criteria formed a unidimensional construct that was associated with suicide-related variables and other psychiatric disorders in expected ways. If supported by future research, ASAD may fill a gap in the current diagnostic classification system (DSM-5) by characterizing and predicting acute suicide risk.

Exposure to suicidal behaviors: A common suicide risk factor or a personal negative life event?

BACKGROUND

Numerous suicide risk factors have been proposed but not adequately validated for epidemiology, treatment and prevention efforts.

AIMS

Exposures to suicidal behaviors (ESB), from family and friend suicide attempts and completions, were tested for validity as a suicidal risk factor and also for measurement and construct adequacy.

METHODS

An anonymous online survey yielded 713 participants (aged 18-71), who reported ESB, completed the Suicidal Affect-Behavior-Cognition Scale (SABCS), and comprised a broad spectrum on those variables.

RESULTS

Tests of dimensionality and internal consistency showed the four ESB variables (attempts/completions through family/friends) were independent and did not form a common factor or an identifiable ESB latent trait. ESB variables were, however, associated with demographic and psychiatric histories. A battery of tests revealed no meaningful associations between ESB and total suicidality or suicide risk factors (social support, depression, anxiety, stress, satisfaction with life and emotional stability). In addition, in contrast to previous reports, young adults ( n = 200; aged 18-20) showed no increased suicidality due to ESB.

CONCLUSION

Results showed no validity for ESB as a common risk factor for suicidality or other psychopathology, or as a latent trait. ESB showed evidence as a personal negative life event with individual effects and interpretations.

Tobacco Use and 12-Month Suicidality Among Adults in the United States

INTRODUCTION

To examine how 12-month prevalences of suicidality vary by tobacco use.

METHODS

Data were from 325 800 adults who participated in the 2008-2014 National Survey on Drug Use and Health. Descriptive analyses and multivariable multinomial logistic regression models were applied.

RESULTS

Among adults aged 18 or older in the United States during 2008-2014, 27.4% (annual average, standard error [SE] = 0.14%) were never tobacco users, 38.8% (SE = 0.17%) were former tobacco users, 5.9% (SE = 0.07%) were past-year users of other types of tobacco (non-cigarette), 20.2% (SE = 0.13%) were past-year cigarette-only users, and 7.7% (SE = 0.07%) were past-year users of cigarettes plus other types of tobacco; 2.6% (SE = 0.04%) had suicidal ideation only, 0.7% (SE = 0.02%) had suicidal ideation and suicide plan only, and 0.5% (SE = 0.02%) attempted suicide. After controlling for covariates, compared with never tobacco users, past-year users of cigarettes plus other types of tobacco were at elevated risk of all examined suicidality outcomes (adjusted relative risks [ARRs] = 1.2-1.7), and past-year cigarette-only users were at higher risk of suicide attempt (ARR = 1.4). Early age of first tobacco use was associated with higher risk of suicidal ideation and suicide plan among former tobacco users, past-year tobacco users, and past-year cigarette users (ARRs = 1.2-1.6). Among past-year tobacco users, frequencies of cigarette and cigar use were associated with suicide attempt (ARRs = 1.4-1.7). Nicotine dependence was associated with suicide attempt among past-year cigarette users (ARR = 1.2).

CONCLUSIONS

Tobacco use is associated with 12-month suicidality among adults. Patients who use tobacco should be assessed further for mental health status and suicide risk.

IMPLICATIONS

Our results revealed that tobacco use is independently associated with the 12-month suicidality outcomes among adults and identified how the prevalences of 12-month suicidality outcomes vary by tobacco use status and use characteristics among adults. These results have important clinical implications. Future research should assess the effectiveness of tobacco use questions as simple screeners for more extensive assessment of mental health status and suicide risk.

Suicidal ideation, suicide attempt, and occupations among employed adults aged 18-64years in the United States

OBJECTIVE

Approximately 70% of all US suicides are among working-age adults. This study was to determine whether and how 12-month suicidal ideation and suicide attempt were associated with specific occupations among currently employed adults aged 18-64 in the U.S.

METHODS

Data were from 184,300 currently employed adults who participated in the 2008-2013 National Surveys on Drug Use and Health (NSDUH). NSDUH provides nationally representative data on suicidal ideation and suicide attempt. Descriptive analyses and multivariable logistic regressions were conducted.

RESULTS

Among currently employed adults aged 18-64 in the U.S., 3.5% had suicidal ideation in the past 12months (3.1% had suicidal ideation only, and 0.4% had suicidal ideation and attempted suicide). Compared with adults in farming, fishing, and forestry occupations (model adjusted prevalence (MAP)=1.6%), adults in the following occupations were 3.0-3.6 times more likely to have suicidal ideation in the past year (model adjusted relative risks (MARRs)=3.0-3.6): lawyers, judges, and legal support workers (MAP=4.8%), social scientists and related workers (MAP=5.4%), and media and communication workers (MAP=5.8%).

CONCLUSIONS

Among employed adults aged 18-64 in the U.S., the 12-month prevalence of suicidal ideation varies by occupations. Adults in occupations that are at elevated risk for suicidal ideation may warrant focused suicide prevention.

Using Data Linkage to Investigate Inconsistent Reporting of Self-Harm and Questionnaire Non-Response

The objective of this study was to examine agreement between self-reported and medically recorded self-harm, and investigate whether the prevalence of self-harm differs in questionnaire responders vs. non-responders. A total of 4,810 participants from the Avon Longitudinal Study of Parents and Children (ALSPAC) completed a self-harm questionnaire at age 16 years. Data from consenting participants were linked to medical records (number available for analyses ranges from 205-3,027). The prevalence of self-harm leading to hospital admission was somewhat higher in questionnaire non-responders than responders (2.0 vs. 1.2%). Hospital attendance with self-harm was under-reported on the questionnaire. One third reported self-harm inconsistently over time; inconsistent reporters were less likely to have depression and fewer had self-harmed with suicidal intent. Self-harm prevalence estimates derived from self-report may be underestimated; more accurate figures may come from combining data from multiple sources.

Limitations of a single-item assessment of suicide attempt history: Implications for standardized suicide risk assessment

Although a suicide attempt history is among the single best predictors of risk for eventual death by suicide, little is known about the extent to which reporting of suicide attempts may vary by assessment type. The current study aimed to investigate the correspondence between suicide attempt history information obtained via a single-item self-report survey, multi-item self-report survey, and face-to-face clinical interview. Data were collected among a high-risk sample of undergraduates (N = 100) who endorsed a past attempt on a single-item prescreening survey. Participants subsequently completed a multi-item self-report survey, which was followed by a face-to-face clinical interview, both of which included additional questions regarding the timing and nature of previous attempts. Even though 100% of participants (n = 100) endorsed a suicide attempt history on the single-item prescreening survey, only 67% (n = 67) reported having made a suicide attempt on the multi-item follow-up survey. After incorporating ancillary information from the in-person interview, 60% of participants qualified for a Centers for Disease Control and Prevention (CDC)-defined suicide attempt. Of the 40% who did not qualify for a CDC-defined suicide attempt, 30% instead qualified for no attempt, 7% an aborted attempt, and 3% an interrupted attempt. These findings suggest that single-item assessments of suicide attempt history may result in the misclassification of prior suicidal behaviors. Given that such assessments are commonly used in research and clinical practice, these results emphasize the importance of utilizing follow-up questions and assessments to improve precision in the characterization and assessment of suicide risk. (PsycINFO Database Record

Single-Item Measurement of Suicidal Behaviors: Validity and Consequences of Misclassification

Suicide is a leading cause of death worldwide. Although research has made strides in better defining suicidal behaviors, there has been less focus on accurate measurement. Currently, the widespread use of self-report, single-item questions to assess suicide ideation, plans and attempts may contribute to measurement problems and misclassification. We examined the validity of single-item measurement and the potential for statistical errors. Over 1,500 participants completed an online survey containing single-item questions regarding a history of suicidal behaviors, followed by questions with more precise language, multiple response options and narrative responses to examine the validity of single-item questions. We also conducted simulations to test whether common statistical tests are robust against the degree of misclassification produced by the use of single-items. We found that 11.3% of participants that endorsed a single-item suicide attempt measure engaged in behavior that would not meet the standard definition of a suicide attempt. Similarly, 8.8% of those who endorsed a single-item measure of suicide ideation endorsed thoughts that would not meet standard definitions of suicide ideation. Statistical simulations revealed that this level of misclassification substantially decreases statistical power and increases the likelihood of false conclusions from statistical tests. Providing a wider range of response options for each item reduced the misclassification rate by approximately half. Overall, the use of single-item, self-report questions to assess the presence of suicidal behaviors leads to misclassification, increasing the likelihood of statistical decision errors. Improving the measurement of suicidal behaviors is critical to increase understanding and prevention of suicide.

Suicidality among adolescents engaging in nonsuicidal self-injury (NSSI) and firesetting: the role of psychosocial characteristics and reasons for living

BACKGROUND

Co-occurrence of problem behaviors, particularly across internalizing and externalizing spectra, increases the risk of suicidality (i.e., suicidal ideation and attempt) among youth.

METHODS

We examined differences in psychosocial risk factors across levels of suicidality in a sample of 77 school-based adolescents engaging in both nonsuicidal self-injury (NSSI) and repeated firesetting. Participants completed questionnaires assessing engagement in problem behaviors, mental health difficulties, negative life events, poor coping, impulsivity, and suicidality.

RESULTS

Adolescents endorsing suicidal ideation reported greater psychological distress, physical and sexual abuse, and less problem solving/goal pursuit than those with no history of suicidality; adolescents who had attempted suicide reported more severe NSSI, higher rates of victimization and exposure to suicide, relative to those with suicidal ideation but no history of attempt. Additional analyses suggested the importance of coping beliefs in protecting against suicidality.

CONCLUSIONS

Clinical implications and suggestions for future research relating to suicide prevention are discussed.

Suicide risk and sexual orientation: a critical review

Many studies have reported higher rates of suicide attempts among sexual minority individuals compared with their heterosexual counterparts. For suicides, however, it has been argued that there is no sexual orientation risk difference, based on the results of psychological autopsy studies. The purpose of this article was to clarify the reasons for the seemingly discrepant findings for suicide attempts and suicides. First, we reviewed studies that investigated if the increased suicide attempt risk of sexual minorities resulted from biased self-reports or less rigorous assessments of suicide attempts. Second, we reanalyzed the only two available case-control autopsy studies and challenge their original "no difference" conclusion by pointing out problems with the interpretation of significance tests and by applying Bayesian statistics and meta-analytical procedures. Third, we reviewed register based and clinical studies on the association of suicides and sexual orientation. We conclude that studies of both suicide attempts and suicides do, in fact, point to an increased suicide risk among sexual minorities, thus solving the discrepancy. We also discuss methodological challenges inherent in research on sexual minorities and potential ethical issues. The arguments in this article are necessary to judge the weight of the evidence and how the evidence might be translated into practice.