Suicide Ideation and Attempts Among Adolescents Engaged in Risk Behaviors: A Latent Class Analysis

Age-varying associations between attempts to change weight and suicidal ideation among adolescents in the United States

PURPOSE

The goal of this study was to inform theory and suicide prevention efforts by examining how the link between attempts to change weight and suicidal ideation varies across adolescence, when it is strongest, and whether there are sex differences.

METHODS

Data were from 13,518 youth ages 14-18 years who participated in the 2019 Youth Risk Behavior Survey, a nationally representative study of U.S. high school students. Time-varying effect modeling was used to estimate associations between attempts to change weight and suicidal ideation as continuous functions of age and to test sex differences in these links.

RESULTS

The link between attempts to lose weight and suicidal ideation was positive and significant between ages 14.0-17.3 years, with the strongest association at age 15.0 (OR = 2.07). There were no sex differences in this age-varying association. The association between attempts to gain weight and suicidal ideation was positive and age-varying for girls, with the strongest association at age 17.2 years (OR = 2.79). This association was not significant for boys at any age.

CONCLUSIONS

Girls and boys who are trying to lose weight and girls who are trying to gain weight may be at elevated risk for suicidal ideation between ages 14 and 18 years. Findings illuminate patterns of association during adolescence and have implications for suicide prevention.

Indirect effects of health-related quality of life on suicidal ideation through psychological distress among cancer patients

The interrelationships of suicidal ideation, psychological distress, and impaired health-related quality of life (HRQoL) in cancer patients are complex and multifaceted. Limited empirical evidence exists on the indirect effects of impaired HRQoL on suicidal ideation through psychological distress among cancer patients. To fill this research gap, 250 cancer patients were recruited through a cross-sectional hospital-based research design. Structural equation model (SEM) results indicated that impaired HRQoL is a predictor of psychological distress (β = 0.153; p < 0.05), and psychological distress positively predicts suicidal ideation (β = 0.647; p < 0.000). The study found no direct effects of impaired HRQoL on suicidal ideation (β = -0.05; p = 0.223). Indirect effects of HRQoL on suicidal ideation was confirmed, showing a full-mediation effect β = 0.099 (SE = 0.048, CI = [0.030, 0.189], p < 0.05) (i.e. the pathway impaired HRQoL predict suicidal ideation is through psychological distress). Cognitive-behavioral therapy and other emotional support programs should be considered for cancer patients to mitigate psychological vulnerabilities linking impaired HRQoL to suicidal ideation.

Racial/ethnic differences in adolescents' non-response to suicide attempt: Findings from the Youth Risk Behavior Survey, 2015-2019

Racial/ethnic minority adolescents are at greater risk of attempting suicide compared to their White counterparts. Yet, racial/ethnic minority adolescents are more likely to not respond to questions on suicidal behaviors. The objective of this study was to investigate the association between race/ethnicity and missing response to suicide attempt among adolescents in the United States. Data for this study were obtained the 2015-2019 national Youth Risk Behavior Survey (n = 40,360). The outcome variable investigated in this study was missing response to suicide attempt and the main explanatory variable was race/ethnicity. Two hierarchical binary logistic regression models were fitted to examine the association between race/ethnicity and missing response to suicide attempt. Of the 40,036 adolescents, 13.4% had missing response to suicide attempt. Controlling for the effects of demographic factors and symptoms of depression, adolescents who self-identified as non-Hispanic Black had more than threefold higher odds of having missing response to suicide attempt when compared to their non-Hispanic White counterparts (AOR = 3.62, p < .001, 95% CI = 2.45-5.34). Adolescent males and adolescents questioning their sexual identity had higher odds of having missing response to suicide attempt. Adolescents with depressive symptoms had lower odds of having missing response to suicide attempt. Missing response to suicide attempt among adolescents continues to differ by race/ethnicity and other demographic factors. The use of a single item in assessing suicide attempt history may be inadequate in capturing national estimates of adolescent suicide metrics.

Adolescent Predictors of Deliberate Self-Harm Thoughts and Behavior Among Young Adults: A Longitudinal Cross-National Study

PURPOSE

This study builds upon and extends previous longitudinal research on deliberate self-harm (DSH) among youth by investigating which risk and protective factors during adolescence predict DSH thoughts and behavior in young adulthood.

METHODS

Self-report data came from 1,945 participants recruited as state-representative cohorts from Washington State and Victoria, Australia. Participants completed surveys in seventh grade (average age 13 years), as they transitioned through eighth and ninth grades and online at age 25 years. Retention of the original sample at age 25 years was 88%. A range of risk and protective factors in adolescence for DSH thoughts and behavior in young adulthood were examined using multivariable analyses.

RESULTS

Across the sample, 9.55% (n = 162) and 2.83% (n = 48) of young adult participants reported DSH thoughts and behaviors, respectively. In the combined risk-protective factor multivariable model for young adulthood DSH thoughts, depressive symptoms in adolescence (adjusted odds ratio [AOR] = 1.05; confidence interval [CI] = 1.00-1.09) increased risk, while higher levels of adolescent adaptive coping strategies (AOR = 0.46; CI = 0.28-0.74), higher levels of adolescent community rewards for prosocial behavior (AOR = 0.73; CI = 0.57-0.93), and living in Washington State decreased risk. In the final multivariable model for DSH behavior in young adulthood, less positive family management strategies during adolescence remained the only significant predictor (AOR = 1.90; CI = 1.01-3.60).

DISCUSSION

DSH prevention and intervention programs should not only focus on managing depression and building/enhancing family connections and support but also promote resilience through efforts to promote adaptive coping and connections to adults within one's community who recognize and reward prosocial behavior.

A latent class analysis using the integrated motivational-volitional model of suicidal behaviour: Understanding suicide risk over 36 months

BACKGROUND

The use of latent class analysis (LCA) to understand suicide risk is often not guided by theoretical frameworks. This study used the Integrated Motivational-Volitional (IMV) Model of Suicidal Behaviour to inform the classification of subtypes of young adults with a suicidal history.

METHODS

Data from young adults in Scotland (n = 3508) were used in this study including a subgroup of participants (n = 845) with a history of suicidality. LCA using risk factors from the IMV model was conducted on this subgroup, and the subgroups and non-suicidal control group were compared. Trajectories of suicidal behaviour over 36 months was compared between the classes.

RESULTS

Three classes were identified. Class 1 (62 %) had low scores on all risk factors, Class 2 (23 %) had moderate scores, and Class 3 (14 %) had high scores on all risk factors. Those in Class 1 had a stable low risk of suicidal behaviour, while those in Class 2 and 3 showed marked variation over time, although Class 3 had the highest risk across all timepoints.

LIMITATIONS

The rate of suicidal behaviour in the sample was low, and differential dropout may have impacted the findings.

CONCLUSIONS

These findings suggest that young adults can be classified into different profiles based on suicide risk variables derived from the IMV model, which still distinguishes them 36 months later. Such profiling may help determining who is most at risk for suicidal behaviour over time.

Incidence and risk factors for suicide, death due to substance use, and violent/accidental death in people with HIV

OBJECTIVE

Deaths due to suicide, substance use and violence/accident may reflect similar risk factors and overlap in their classification. This study aimed to investigate incidence and risk factors of mortality among people with HIV (PWH) due to these three related causes.

DESIGN

Prospectively collected data from PWH at least 18 years old and under active follow-up in the EuroSIDA study from 2007 to 2019 were analysed.

METHODS

Cause-specific Cox regression analysis was used to assess risk factors.

RESULTS

A total of 17 881 participants were included, comprising 149 327 person-years of follow-up (PYFU). Forty participants died by suicide {incidence rate [IR] [95% confidence interval (CI)]: 0.3/1000 PYFU (0.2, 0.4)} 93 from substance use [IR (95% CI): 0.6/1000 PYFU (0.5, 0.8)], and 57 by violence/accident [IR (95% CI): 0.4/1000 PYFU (0.3, 0.5)]. An AIDS diagnosis within the last 12 months was associated with nine-fold increased risk of suicide vs. no history of AIDS [adjusted hazard ratio (aHR): 9.06; 95% CI: 2.07, 39.7]. Male gender was associated with double the risk of violent/accidental death (aHR: 2.28; 95% CI: 1.09, 4.78). PWH in Eastern Europe and those who acquired HIV by injection drug use (IDU) demonstrated a greater risk of death due to substance use or violence/accident.

CONCLUSIONS

The association between a recent diagnosis of AIDS and suicide highlights a critical period for intervention. HIV infection acquired through IDU demonstrated an expected relationship with death due to substance use and violent/accidental deaths. Increased risk of death due to substance use and violence/accident in Eastern Europe demands investigation into specific differences that may drive that association.

Mental Health Among Sexual and Gender Minority Youth Incarcerated in Juvenile Corrections

OBJECTIVES

This study examined differences by sexual and gender minority (SGM) and incarceration statuses in mental health indicators among youth.

METHODS

Population-based, cross-sectional data are from the 2019 Minnesota Student Survey (N = 72 324) and includes public school students (Mage = 15.49) and youth incarcerated in juvenile correctional facilities (Mage = 15.48). We categorized youth into 4 groups: (1) non-SGM youth in public schools, (2) non-SGM youth in correctional facilities, (3) SGM youth in public schools, and (4) SGM youth in correctional facilities. Multivariable regression models assessed associations among SGM and incarceration statuses and mental health indicators after controlling for sociodemographic characteristics and exposure to adverse childhood experiences.

RESULTS

More youth in juvenile correctional facilities identified as SGM (28.8%) compared with youth in public schools (20.4%, P = .002). SGM youth in correctional facilities reported a higher prevalence of suicidal ideation (42.2%), suicide attempt (37.5%), and self-harm (57.8%) compared with all other groups. Depressive symptom severity was similarly elevated among SGM youth in correctional facilities and SGM youth in public schools. SGM youth in correctional facilities, compared with non-SGM youth in public schools, demonstrated elevated odds of suicide ideation (adjusted odds ratio [aOR] = 2.2, 95% confidence interval [95% CI] = 1.3-3.9), suicide attempt (aOR = 6.3, 95% CI = 3.6-10.9), and self-harm (aOR = 3.6, 95% CI = 2.1-6.3).

CONCLUSIONS

Incarcerated SGM youth disproportionately experience negative mental health indicators. Findings suggest that tailored, intersectional, and responsive mental health interventions are needed to support incarcerated SGM youth.

Suicidal Ideation in the Australian Construction Industry: Prevalence and the Associations of Psychosocial Job Adversity and Adherence to Traditional Masculine Norms

BACKGROUND

Suicide in the Australian Construction Industry (ACI) is a significant issue, however minimal understanding of suicidal ideation prevalence, as well as the potential role psychosocial job adversity and increased adherence to traditional masculine norms may play in its presence, is apparent.

METHOD

A representative sample of Australian men (n = 11,132) were used to create initial understandings of prevalence of suicidal ideation (past two weeks), psychosocial job adversities and level of adherence to traditional masculine norms for the ACI (n = 1721) in comparison to a general population comprised of the remaining employed males from Other Industries (n = 9411). Additionally, due to their reported increased suicide vulnerability investigation of associations between suicidal ideation, psychosocial job adversities and adherence to traditional masculine norms for the ACI were undertaken.

RESULTS

No difference in suicidal ideation prevalence was reported between the ACI and those employed in Other Industries (p > 0.05), however, increased prevalence of psychosocial job adversities (p ≤ 0.001) and adherence to traditional masculine norms (p ≤ 0.001) for the ACI was seen. Significant multivariate associations between suicidal ideation, psychosocial job adversities (OR = 1.79, 95%CI [1.12-2.85]) and two domains of traditional masculine norms, self-reliance (OR = 1.29, 95%CI [1.09-1.51]) and risk-taking (OR = 1.20, 95%CI [1.01-1.41]), were reported.

CONCLUSION

Results suggest need for increased understanding of later stage suicidal trajectory drivers in the ACI. Findings indicate need for prevention group/industry concentration on mitigation of psychosocial job adversities, as well as a more nuanced and increased discussion of the negative role of self-reliance and risk-taking domains of traditional masculine norms may play in ACI suicidal ideation, as opposed to the construct as a whole.

Latent profile analysis to identify subgroups of Chinese sexual minority adolescents at risk of suicidality

BACKGROUND

This study aimed to identify latent class profiles of sexual minority adolescents (Men Sexually attracted to Men, Women Sexually attracted to Women, and Bisexual) with elevated suicidal ideation.

METHODS

Data were collected from 18 secondary schools in China. Sub-group classifications were identified using variables associated with suicidal ideation in sexual minority adolescents, including parental relationship quality, electronic equipment time, school bullying, and sleep quality using the Chinese version of the Pittsburgh Sleep Quality Index to measure sleep. Anxiety was measured using the Generalized Anxiety Disorder 7 (GAD-7), depression was measured using the Patient Health Questionnaire 9 (PHQ-9), hypomania using the Hypomanic Checklist-32 (HCL-32), positive coping style was identified using the Trait Coping Style Questionnaire, and self-efficacy was measured by the General Self-Efficacy Scale.

RESULTS

Four distinctive profiles were derived from the data. Compared to "low-risk" group (Class 3), the "adolescent with mood problems" group (Class 2) had a 9.81 times higher risk of suicidal ideation; the those who classified as "severe bullied adolescent" (Class 4) had a 9.26 times higher risk of suicidal ideation. and the "adolescents with low self-efficacy" group (Class 1) had a 4.48 times higher risk of suicidal ideation.

CONCLUSIONS

Sexual minority adolescents with mood problems have the highest risk of suicidal ideation, followed by adolescents frequently being bullied at school. Interventions aimed at reducing suicide risk among sexual minority adolescents may benefit from attending to such profile factors identified in this study to develop targeted clinical care.

Genetic propensity for risky behavior and depression and risk of lifetime suicide attempt among urban African Americans in adolescence and young adulthood

Suicide attempts (SA) among African Americans have increased at a greater rate than any other racial/ethnic group. Research in European ancestry populations has indicated that SA are genetically influenced; however, less is known about the genetic contributors that underpin SA among African Americans. We examined whether genetic propensity for depression and risky behaviors (assessed via polygenic risk scores; PRS) independently and jointly are associated with SA among urban, African Americans and whether sex differences exist in these relations. Participants (N = 1,157, 45.0% male) were originally recruited as part of two first grade universal school-based prevention trials. Participants reported in adolescence and young adulthood on whether they ever attempted suicide in their life. Depression and risky behaviors PRS were created based on large-scale genome-wide association studies conducted by Howard et al. (2019) and Karlson Línner et al. (2019), respectively. There was a significant interaction between the risky behavior PRS and depression PRS such that the combination of high risky behavior polygenic risk and low/moderate polygenic risk for depression was associated with greater risk for lifetime SA among the whole sample and African American males specifically. In addition, the risky behavior PRS was significantly positively associated with lifetime SA among African American males. These findings provide preliminary evidence regarding the importance of examining risky behavior and depression polygenic risk in relation to SA among African Americans, though replication of our findings in other African American samples is needed.

Effects of polygenic risk for suicide attempt and risky behavior on brain structure in young people with familial risk of bipolar disorder

Bipolar disorder (BD) is associated with a 20-30-fold increased suicide risk compared to the general population. First-degree relatives of BD patients show inflated rates of psychopathology including suicidal behaviors. As reliable biomarkers of suicide attempts (SA) are lacking, we examined associations between suicide-related polygenic risk scores (PRSs)-a quantitative index of genomic risk-and variability in brain structures implicated in SA. Participants (n = 206; aged 12-30 years) were unrelated individuals of European ancestry and comprised three groups: 41 BD cases, 96 BD relatives ("high risk"), and 69 controls. Genotyping employed PsychArray, followed by imputation. Three PRSs were computed using genome-wide association data for SA in BD (SA-in-BD), SA in major depressive disorder (SA-in-MDD) (Mullins et al., 2019, The American Journal of Psychiatry, 176(8), 651-660), and risky behavior (Karlsson Linnér et al., 2019, Nature Genetics, 51(2), 245-257). Structural magnetic resonance imaging processing employed FreeSurfer v5.3.0. General linear models were constructed using 32 regions-of-interest identified from suicide neuroimaging literature, with false-discovery-rate correction. SA-in-MDD and SA-in-BD PRSs negatively predicted parahippocampal thickness, with the latter association modified by group membership. SA-in-BD and Risky Behavior PRSs inversely predicted rostral and caudal anterior cingulate structure, respectively, with the latter effect driven by the "high risk" group. SA-in-MDD and SA-in-BD PRSs positively predicted cuneus structure, irrespective of group. This study demonstrated associations between PRSs for suicide-related phenotypes and structural variability in brain regions implicated in SA. Future exploration of extended PRSs, in conjunction with a range of biological, phenotypic, environmental, and experiential data in high risk populations, may inform predictive models for suicidal behaviors.

Associations between weight talk exposure and unhealthy weight control behaviors among young adults: A person-centered approach to examining how much the source and type of weight talk matters

This study characterized common patterns of weight talk and examined associations with unhealthy weight control behaviors (UWCBs) in young adults. Participants (n = 1298) were from EAT 2018 (Eating and Activity Over Time), a population-based study of emerging adults (mean age = 22.2; 53.6 % women). Latent class analyses (LCA) derived classes based on weight talk exposure for men and women. Generalized linear models examined the association between weight talk classes and extreme/less extreme UWCBs. LCA results revealed 4 patterns of weight talk exposure among young adult women: minimal weight talk (38.8 %), peer weight talk (35.2 %), multi-source weight talk (13.5 %), and parental weight talk (12.6 %). Three classes emerged among men: minimal weight talk (44.0 %), peer weight talk (29.7 %), and multi-source weight talk (26.3 %). Among young adult women, the parental weight talk class reported the highest levels of extreme and less extreme UWCBs. Among young adult men, the multi-source weight talk class reported the highest levels of less extreme UWCBs. Results provide evidence regarding the importance of parental weight talk, even among young adult children, whether or not parental weight talk is accompanied by peer weight talk. Parents have the potential to improve their young adults' weight-related behaviors through avoiding weight talk.

Conducting School Suicide Risk Assessment in Distance Learning Environments

The social distancing mandate, implemented in response to the coronavirus disease 2019 (COVID-19) global pandemic, has guided many schools to deliver instruction via distance learning. Among the many challenges generated by this delivery system is the need for school mental health services, including school suicide prevention and intervention, to be conducted remotely. After briefly discussing the magnitude of the problem of youth suicide and how the COVID-19 pandemic has likely increased risk for youth suicidal ideation and behaviors, this article provides guidance on how school systems can prepare for and conduct suicide risk assessments in distance learning environments.

Groups of Sexual Violence Perpetration in a National Sample of Youth 13-25 Years of Age

Little is known about how specific forms of sexual violence (SV) perpetration group together and how youth transition between these groups over time. Between 2011 and 2016, four waves of data were collected online nationally from 1129 13-25-year-olds. Six forms of SV perpetration were assessed: sexual harassment, online sexual harassment, sexual assault, coercive sex, attempted rape, and rape. We used latent class analysis to examine how different types of SV perpetration behaviors clustered together in each of the four waves. Latent transition analysis was used to examine stability and instability in group membership between the first and fourth waves assessed. Three groups were identified in each of the four waves of data collection: (1) a "non-perpetrators" group, ranging from 69 to 81% (n: 775-912) across waves, (2) a "sexual harassment" group, ranging from 17 to 29% (n: 191-327), and (3) a "multiple perpetration" group that engaged in all types of SV perpetration, ranging from 1 to 3% (n: 12-28). Most youth persisted in their behavior over time, which was true for each of the three groups (ranging between 60 and 72%). Desistence was less common, ranging from 35% of those who transitioned from sexual harassment to non-perpetration to 20% for those who transitioned from multiple perpetration to sexual harassment, and from multiple perpetration to non-perpetration. Escalation was least common, ranging from 2% who transitioned from non-perpetration to multiple perpetration to 26% who transitioned from non-perpetration to sexual harassment. Youth who perpetrate SV are heterogeneous; SV perpetration is not persistent for all youth.

Examining the intersection of race/ethnicity and sexual orientation on suicidal ideation and suicide attempt among adolescents: Findings from the 2017 Youth Risk Behavior Survey

Although some studies have examined factors associated with suicidal behaviors, few studies have examined the intersection of sexual orientation and race/ethnicity on suicidal behaviors among adolescents. The objective of this study is to examine the intersection of sexual orientation and race/ethnicity on suicidal ideation and suicide attempt. We hypothesized that controlling for the effects of known risk factors for suicidal behaviors, there will be an interaction effect between sexual orientation and race/ethnicity on suicidal behaviors. Data for this study came from the 2017 Youth Risk Behavior Surveillance System. A sample of 13,697 adolescents aged 14-18 years (51.8% female) was analyzed using binary logistic regression. Of the 13,697 adolescents, 17.7% reported suicidal ideation and 7.7% made at least one suicide attempt during the past 12 months. In the multivariate logistic regression models, non-White sexual minority adolescents are less likely to report suicidal ideation. However, Hispanic lesbian/gay adolescents had 1.71 times higher odds of making a suicide attempt. Odds of suicide attempt are 1.2 times higher for Black or African American bisexual adolescents and American Indian/Native Hawaiian/Pacific Islander bisexual adolescents had 2.44 times higher odds of making a suicide attempt. Other significant predictors of suicidal behaviors include a history of sexual assault, a victim of bullying, depression, cigarette smoking, misuse of prescription pain medication, and illicit drug use. The findings of the present study extend past research on the intersection of sexual orientation and race/ethnicity on mental health problems among adolescents including suicidal behaviors.

Impulsivity and Impulsivity-Related Endophenotypes in Suicidal Patients with Substance Use Disorders: an Exploratory Study

Suicidal behavior (SB) is a major problem in patients with substance use disorders (SUDs). However, little is known about specific SB risk factors in this population, and pathogenetic hypotheses are difficult to disentangle. This study investigated some SB and SUD-related endophenotypes, such as impulsivity, aggression, trait anger, and risk-taking behaviors (RTBs), in forty-eight patients with SUDs in relation to lifetime history of suicide attempts (SAs). Disorders related to alcohol, cannabis, cocaine, opiates, and hallucinogenic drugs were included. Lifetime SAs was significantly associated with both higher impulsivity and higher aggression, but not with trait anger. A higher number of RTBs were associated with lifetime SAs and higher impulsivity, but not with aggression and trait anger. Assessing these endophenotypes could refine clinical SB risk evaluation in SUDs patients by detecting higher-risk subgroups. An important limitation of this study is exiguity of its sample size. Its primary contribution is inclusion of all SUD types.

Prevalence of suicidal behaviors and associated factors among Peruvian adolescent students: an analysis of a 2010 survey

Introduction

Adolescence is one of the stages in life most affected by suicide. In Peru, 22% of suicides occur in people 10 to 19 years old. However, mental health overall and factors associated with suicidal behaviors have not been well studied.

Objective

To determine the prevalence of suicidal behaviors (ideation and ideation plus suicidal planning) and associated factors in Peruvian adolescent students.

Methods

A cross-sectional study analyzing data from the Global School-based Student Health Survey for Peru in 2010 was conducted to measure the prevalence of suicidal behaviors (ideation and ideation plus suicidal planning) and associated factors in Peruvian adolescent students.

Results

Of the 2521 students evaluated, 19.9% (95% CI: 17.8 to 22.2) presented suicidal ideation and 12.7% (95% CI: 11.1 to 14.5) presented suicidal planning in the last 12 months. Females had a higher prevalence of both ideation (27.5%, 95% CI: 24.9 to 30.4) and ideation plus suicidal planning (18.5%, 95% CI: 16.4 to 20.7). Multivariate analysis found that being female, having little parental support, having felt loneliness, having suffered from physical aggression, having been bullied, and alcohol consumption, were associated with ideation and ideation plus suicidal planning in adolescent students.

Conclusion

Ideation and ideation plus suicidal planning is a problem in the Peruvian adolescent population and is associated with several factors. Strategies are needed to identify and register suicide in adolescents in Peru and to develop prevention programs.

Real-Time Monitoring of Suicide Risk among Adolescents: Potential Barriers, Possible Solutions, and Future Directions

Recent advances in real-time monitoring technology make this an exciting time to study risk for suicidal thoughts and behaviors among youth. Although there is good reason to be excited about these methods, there is also reason for caution in adopting them without first understanding their limitations. In this article, we present several broad future directions for using real-time monitoring among youth at risk for suicide focused around three broad themes: novel research questions, novel analytic methods, and novel methodological approaches. We also highlight potential technical, logistical, and ethical challenges with these methodologies, as well as possible solutions to these challenges.

Self-injury Age of Onset: A Risk Factor for NSSI Severity and Suicidal Behavior

This study replicates and extends prior work by examining how age of Non Suicidal Self-Injury (NSSI) onset relates to NSSI severity, suicidal behavior, perceived recovery from NSSI, and protective factors of life satisfaction, resilience, and subjective happiness. University students who reported engaging in NSSI within the past year (n = 644) completed on-line questionnaires assessing NSSI characteristics, suicidal behavior, and protective factors. Participants who began self-injuring at or before age 12 reported significantly more lifetime acts of NSSI, greater method versatility, and medically severe NSSI than those who began NSSI at older ages (17 years). Those with a typical age of onset (13-16 years) did not differ from the younger age group on method versatility, medical severity, past year frequency, or perceived recovery but did differ from those with an older age of onset. The proportion of individuals reporting suicide attempts significantly increased as the age of onset became younger. No age of onset group differences were observed on the protective factors. The age at which one begins NSSI appears to be a risk factor for increasingly severe NSSI and potential suicidal behavior. Early detection and intervention is important for reducing the negative consequences of engaging in NSSI.

Trajectories of Suicidal Ideation from Middle Childhood to Early Adolescence: Risk and Protective Factors

Suicidal ideation is considered to be the first step on the pathway to suicide. Despite the fact that suicidal ideation is surprisingly prevalent among preadolescent children in China and elsewhere, and despite its possible increase during the transition into adolescence, its developmental patterns and predictors during this period are unclear, thus precluding a meaningful understanding of its determinants and possible trajectories. Thus, this study aimed to identify suicidal ideation trajectories and multisystemic predictors covering the transition from middle childhood to early adolescence. A total of 715 Chinese elementary school students (M_age = 8.95, SD = 0.71; 54.5% was male) participated in assessments at six time points, using six-month assessment intervals. Growth mixture modeling analyses extracted three distinct trajectories of suicidal ideation: "low-stable" (86.4%), "moderate-increasing" (7.1%) and "high-start" (6.5%). Multivariate logistic regression analyses revealed that social anxiety and academic anxiety served as risk factors for the adverse developmental trajectories of suicidal ideation; whereas self-esteem, life satisfaction, and academic achievement served as protective factors for the positive developmental trajectory of suicidal ideation. The identification of three subgroups with unique predictors highlights the importance of individual difference considerations in understanding the progression of suicidal ideation in childhood and adolescence and the need for specific programs tailored to the unique characteristics of the relevant trajectories. Furthermore, given that suicidal ideation may start in a proportion of middle childhood youths and continue into adolescence, the middle childhood period should provide an important window of opportunity for large-scale screening and prevention of the escalation of suicidality in adolescence.

Finding causation in occupational fatalities: A latent class analysis

BACKGROUND

The method "Learning by mistakes" was developed in Italy to conduct occupational injury investigations and to collect information on the genesis of injuries. The aim is to analyze data classified with this method in order to identify patterns among the factors contributing to injury dynamics.

METHODS

Data regarding 673 factors, corresponding to 354 occupational fatalities that occurred in the Piedmont region (north-west of Italy) during 2005-2014 were considered. Latent Class Analysis (LCA) was applied to find patterns among these factors.

RESULTS

The eight-class model was selected. Most of the factors fell in the class "Fall from height or vehicle rollover due to incorrect practice" (40.56%) while the remaining factors where heterogeneously distributed in the other classes.

CONCLUSIONS

All the classes found allow for a logical interpretation. Systematic use of LCA could aid in uncovering new, unexpected patterns of factors not otherwise detectable by analysis of the single fatal accident.

Prevalence and Characteristics of Self-Harm in Adolescents: Meta-Analyses of Community-Based Studies 1990-2015

OBJECTIVE

To provide meta-analytic estimates of self-harm from all community-based studies of adolescents from 1990 through 2015, estimates of suicidal risk, and characteristics including age profile, frequency, types, seeking help, and reasons.

METHOD

Databases, bibliographies, and the internet were searched for cross-sectional and cohort studies of 12- to 18-year-olds. Meta-analytic estimates of the prevalence and characteristics of self-harm, risk of suicidal behaviors, and rates comparing different methods were calculated.

RESULTS

One hundred seventy-two datasets reporting self-harm in 597,548 participants from 41 countries were included. Overall lifetime prevalence was 16.9% (95% CI 15.1-18.9), with rates increasing to 2015. Girls were more likely to self-harm (risk ratio 1.72, 95% CI 1.57-1.88). The mean age of starting self-harm was 13 years, with 47% reporting only 1 or 2 episodes and cutting being the most common type (45%). The most frequent reason was relief from thoughts or feelings. Slightly more than half sought help, but for most this was from a friend. Suicidal ideation (risk ratio 4.97) and attempts (risk ratio 9.14) were significantly higher in adolescents who self-harmed, but this was higher with more frequent self-harm. Methodologic factors also were associated with higher rates of self-harm.

CONCLUSION

Interventions that can lower suicidal risk should be made available to adolescents who self-harm frequently as soon as possible. Preventative interventions that help adolescents deal with negative feelings should be instituted at the onset of puberty. Because friends are frequently asked for support, interventions also should be developed for peer groups.

Deciding on the Starting Number of Classes of a Latent Class Tree

In recent studies, latent class tree (LCT) modeling has been proposed as a convenient alternative to standard latent class (LC) analysis. Instead of using an estimation method in which all classes are formed simultaneously given the specified number of classes, in LCT analysis a hierarchical structure of mutually linked classes is obtained by sequentially splitting classes into two subclasses. The resulting tree structure gives a clear insight into how the classes are formed and how solutions with different numbers of classes are substantively linked to one another. A limitation of the current LCT modeling approach is that it allows only for binary splits, which in certain situations may be too restrictive. Especially at the root node of the tree, where an initial set of classes is created based on the most dominant associations present in the data, it may make sense to use a model with more than two classes. In this article, we propose a modification of the LCT approach that allows for a nonbinary split at the root node, and we provide methods to determine the appropriate number of classes in this first split, based either on theoretical grounds or on a relative improvement of fit measure. This novel approach also can be seen as a hybrid of a standard LC model and a binary LCT model, in which an initial, oversimplified but interpretable model is refined using an LCT approach. Furthermore, we show how to apply an LCT model when a nonstandard LC model is required. These new approaches are illustrated using two empirical applications: one on social capital and the other on (post)materialism.

Risk-Taking Behavior and Suicidality: The Unique Role of Adolescent Drug Use

Research has supported an association between suicidal thoughts/behaviors and risk taking, which may be particularly strong during adolescence when risk taking is known to increase. However, extant research has focused on individual risk-taking behaviors (e.g., alcohol use), limiting our ability to evaluate the unique association between different risk-taking behaviors and suicidal thoughts/behaviors. The current study aimed to fill this gap by examining the simultaneous influence of multiple risk-taking behaviors (i.e., risky sexual behavior, tobacco/alcohol use, illicit drug use, delinquent behavior, violent behavior) on adolescent suicidal thoughts/behaviors. Data from the National Longitudinal Study of Adolescent Health was utilized. The sample consisted of 4,834 adolescents who completed home interviews at two time points. At the first time point, participants' mean age was 15.15, with 48% (n = 2,315) identifying as male. Participants provided information about suicidal thoughts/behaviors and multiple risk-taking behaviors at an initial interview and at a second interview, approximately 11 months later. When independently examined, nearly all assessed risk-taking behaviors were independently associated with suicidal ideation concurrently and prospectively, and with suicide attempts concurrently. When all risk-taking behaviors were examined simultaneously, illicit drug use was the only significant concurrent and significant prospective, albeit negative, predictor of suicidal thoughts and only concurrent predictor of suicidal behavior. The current findings suggest that illicit drug use may have a stronger association with suicidal thoughts and behaviors than other risk-taking behavior. These findings have implications for prevention and intervention programs for adolescents.

Risky Integration

Abstract. Background: Although the protective value of social connectedness is emphasized in suicide prevention programming, little is known about the relationship between connectedness in high-risk runaway and homeless youth (RHY) networks and suicidal ideation. Aims: The study examined how social connectedness, in the form of social network position and network exposures, was associated with suicidal ideation among RHY. Method: Using population-level social network data from 384 RHY, each youth’s network position and exposure to potentially suicidogenic peer attributes were calculated. Logistic regression analyses were used to examine associations between network position (core vs. periphery), peer exposures (e.g., depressed or suicidal peers), and suicidal ideation. Results: In univariable analyses, being in the core of the network and being connected to greater proportions of depressed and suicidal peers increased the likelihood of suicidal ideation. In the final multivariable model, higher exposure to depressed peers remained associated with suicidal ideation, and a marginal effect for network position was observed. Conclusion: The risk of suicidal ideation was linked to depression among peers and to a lesser extent being more integrated into the RHY network. Identifying and treating depression in naturally occurring friendship groups, particularly in the core of the network, represents a promising network-level intervention.