Who are we missing? Self-selection bias in nonsuicidal self-injury research

BACKGROUND

Despite the threat of self-selection bias to the generalizability of research findings, remarkably little is known about who chooses to take part in non-suicidal self-injury (NSSI) research specifically. We aimed to establish the extent of willingness to take part in NSSI research within a commonly sampled population before assessing whether individual differences in demographic characteristics, NSSI lived experience, and participation experiences were associated with willingness to take part in future NSSI research.

METHODS

New Zealand university students (n = 3098) completed self-report measures of their NSSI, psychological distress, emotional dysregulation, experience of their participation in the current study, and willingness to participate in future NSSI research.

RESULTS

Most participants (78.2%) indicated that they were willing to take part in future NSSI research. Men, older participants, people with NSSI lived experience, and those with more frequent past-year NSSI were more likely to be willing to take part in future NSSI research. Participants who reported a more positive subjective experience of the current study also indicated greater willingness.

CONCLUSIONS

Findings demonstrate systematic differences in who is willing to take part in NSSI research. Future research should implement methodological and statistical approaches to mitigate the impact of self-selection bias on NSSI research.

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.

Who are the patients who deny suicidal intent? Exploring patients' characteristics associated with self-disclosure and denial of suicidal intent

BACKGROUND

Patients' non-disclosure of suicidal ideation and intent concealment represent a major obstacle to the effective assessment of suicide risk and to the delivery of suicide prevention treatments. The present study aimed to investigate this phenomenon and to assess (1) if outpatient psychiatric patients are more or less likely to disclose intent to mental health clinicians in the context of psychiatric/psychological treatment than they are to in the context of research interviews with non-clinicians; and (2) if certain demographic, trait-like, and state-like characteristics may predict such disclosure differences.

METHODS

A total of 780 psychiatric outpatient participants aged 18 to 84 and 193 clinician participants aged 25 to 54 were included in the study. The proportion of patients who disclosed to clinicians only, to research assistants (RAs) only, to both, and to none, was compared using a z-test. Univariate analyses were used to compare the participants' variables across disclosure groups, and significant individual predictors were included in multilevel regression analyses.

RESULTS

Participants were more significantly more likely to disclose to RAs (10.4%) than to clinicians (5.6%), p < 0.001. Neuroticism and trait anxiety predicted disclosure to RAs vs no disclosure; low extraversion predicted disclosure to clinician versus no disclosure; and extraversion and trait anxiety predicted disclosure to RAs versus to clinicians.

DISCUSSION

Patients' disclosure patterns, the personality variables predicting them, and their clinical implications were discussed in the context of the extant literature on patients' reasons for concealing suicidal ideation and intent.

Non-response to questions about suicide ideation and attempts among veterans: Results from the National Health and Resilience in Veterans Study

OBJECTIVES

Veterans who decline to provide information on their history of self-injurious thoughts and behaviors (SITBs) may be at elevated suicide risk. We examined associations between non-response to a question assessing lifetime SITBs and proxy variables of suicide risk.

METHODS

In this population-based cross-sectional study of 4069 US veterans, responses to the Suicidal Behaviors Questionnaire-Revised were examined to group veterans into one of three categories: (1) denied lifetime SITBs, (2) reported lifetime SITBs, or (3) declined to respond.

RESULTS

Overall, 69.5% of veterans denied a SITB history, 29.5% reported a SITB history, and 1.0% declined to provide information regarding SITBs. In adjusted analyses, veterans who declined to provide information on SITBs were significantly more likely than veterans who explicitly denied lifetime SITBs to screen positive for posttraumatic stress disorder; report lifetime non-suicidal self-injury; and report elevated levels of total trauma burden, externalizing behaviors, loneliness, received social support, and provided social support. Across these constructs, veterans who declined to provide SITB information were statistically indistinguishable from veterans who explicitly reported lifetime SITBs.

CONCLUSIONS

Veterans who decline to provide information about suicidal thoughts and behaviors may represent a covert group at elevated risk for suicide.

Prevalence and correlates of suicidal ideation in World Trade Center responders: Results from a population-based health monitoring cohort

BACKGROUND

Suicidal ideation (SI) is an early risk factor for suicide among disaster responders. To date, however, no known study has examined the prevalence, and pre-, peri-, and post-disaster risk correlates of SI in World Trade Center (WTC) responders, one of the largest disaster response populations in U.S.

METHODS

The prevalence, and pre-, peri- and post-event correlates of SI were assessed in a population-based health monitoring cohort of 14,314 police responders and 16,389 non-traditional responders (e.g., construction workers) who engaged in response, recovery, and clean-up efforts following the 9/11/2001 terrorist attacks on the WTC. Multivariable analyses were conducted to identify correlates and individual psychiatric symptoms associated with SI in each group.

RESULTS

A total 12.5% of non-traditional and 2.2% of police WTC responders reported SI. Depression, functional impairment, alcohol use problems, and lower family support while working at the WTC site were associated with SI in both groups of responders. Symptom-level analyses revealed that three symptoms accounted for approximately half of the variance in SI for both groups-feeling bad about oneself, or that one has let down oneself or family; feeling down, depressed, or hopeless; and sense of foreshortened future (44.7% in non-traditional and 71% in police).

LIMITATIONS

Use of self-report measures and potentially limited generalizability.

CONCLUSIONS

SI is prevalent in WTC disaster responders, particularly non-traditional responders. Post-9/11 psychiatric symptoms reflecting guilt, shame, hopelessness, and associated functional impairment are most strongly linked to SI, suggesting that interventions targeting these factors may help mitigate suicide risk in this population.

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

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

Decision (not) to disclose mental health conditions or substance abuse in the work environment: a multiperspective focus group study within the military

OBJECTIVES

Many workers in high-risk occupations, such as soldiers, are exposed to stressors at work, increasing their risk of developing mental health conditions and substance abuse (MHC/SA). Disclosure can lead to both positive (eg, support) and negative (eg, discrimination) work outcomes, and therefore, both disclosure and non-disclosure can affect health, well-being and sustainable employment, making it a complex dilemma. The objective is to study barriers to and facilitators for disclosure in the military from multiple perspectives.

DESIGN

Qualitative focus groups with soldiers with and without MHC/SA and military mental health professionals. Sessions were audiotaped and transcribed verbatim. Content analysis was done using a general inductive approach.

SETTING

The study took place within the Dutch military.

PARTICIPANTS

In total, 46 people participated in 8 homogeneous focus groups, including 3 perspectives: soldiers with MHC/SA (N=20), soldiers without MHC/SA (N=10) and military mental health professionals (N=16).

RESULTS

Five barriers for disclosure were identified (fear of career consequences, fear of social rejection, lack of leadership support, lack of skills to talk about MHC/SA, masculine workplace culture) and three facilitators (anticipated positive consequences of disclosure, leadership support, work-related MHC/SA). Views of the stakeholder groups were highly congruent.

CONCLUSIONS

Almost all barriers (and facilitators) were related to fear for stigma and discrimination. This was acknowledged by all three perspectives, suggesting that stigma and discrimination are considerable barriers to sustainable employment and well-being. Supervisor knowledge, attitudes and behaviour were critical for disclosure, and supervisors thus have a key role in improving health, well-being and sustainable employment for soldiers with MHC/SA. Furthermore, adjustments could be made by the military on a policy level, to take away some of the fears that soldiers have when disclosing MHC/SA.

Sexual orientation and prevalence of mental health difficulties among emergency services employees

BACKGROUND

LGBQ+ people (Lesbian, Gay, Bisexual, Queer) are at-risk of discrimination and developing mental health issues within general populations. Limited research has assessed their mental health in emergency services occupations, a population which are known to experience poorer mental health. The current study explores the extent to which sexual orientation is associated with higher rates of mental health issues among emergency personnel.

METHODS

A stratified random sample of employees from twenty-nine police (N = 8,088), ambulance (N = 3,473), and fire and rescue (N = 2,975) agencies from around Australia participated in a cross-sectional mental health survey (N = 14,536, male = 64.2%, 42.7% over 45 years of age, heterosexual = 92.7%).

RESULTS

Employees with a bisexual/pansexual orientation or those who were not sure about their sexual orientation were significantly more likely to report suicidal thoughts, suicide plans, psychological distress, and illicit drug use when compared with heterosexual employees. LGBQ+ employees reported significantly higher rates of lifetime suicide plans and attempts. Specifically, LGBQ+ fire and rescue personnel were roughly six times more likely to report lifetime suicide attempts, and approximately five times more likely to use illicit drugs weekly than their heterosexual colleagues in the fire and rescue sector. Female LGBQ+ personnel were significantly less likely to consume illicit drugs weekly and monthly than male LGBQ+ personnel.

CONCLUSIONS

Emergency services personnel are already at-risk of developing pervasive mental health difficulties. It is important that organisations foster positive working environments, particularly for LGBQ+ people who may be more marginalized within organisations.