Daily and Cumulative Sleep Duration as Predictors of Suicidal Desire and Intent: An Ecological Momentary Assessment Study.

Objective: Shorter sleep duration has been linked to increased suicidal ideation (SI). However, limited research has examined the relationship between nightly sleep duration and short-term fluctuations in suicide risk, as well as the potential clinical utility of leveraging indices of recent (ie, past 3 days) patterns of sleep duration as a marker of acute suicide risk. This study examined associations between nightly and cumulative sleep duration and suicidal desire and intent utilizing ecological momentary assessment (EMA) in a high risk sample of community-based adults.Methods: A sample of 237 community based adults with severe SI provided daily indices of self-reported sleep duration and ratings of suicidal desire and intent 6 times per day for 14 consecutive days of EMA monitoring. Data collection took place between February and May 2019.Results: Between-person nightly sleep duration and cumulative sleep duration were negatively associated with suicidal desire (Bs = -3.48 and -4.78) and intent (Bs = -1.96 and -2.46). At the within person level, nightly sleep duration was negatively related to suicidal desire (Bs = -0.51 and -0.47) and intent. Within person cumulative sleep duration, on the other hand, was unrelated to both suicidal desire and intent (Bs = -0.26 and -0.09).Conclusion: Our findings highlight the clinical utility of examining individual differences in sleep duration as a marker for suicide-related outcomes, as well as deviations from one's typical nightly sleep as a potential acute predictor of suicide-related outcomes, in addition to information about recent duration over one or more nights of sleep. Limitations and future directions are discussed.

Examining the predictive utility of suicidal ideation characteristics in relation to real-time monitoring of suicidal ideation and suicide attempts at follow-up.

INTRODUCTION: Several characteristics of suicidal ideation, including frequency, duration, perceived controllability, and intensity, have been identified. The present study examined whether these characteristics of baseline suicidal ideation uniquely predicted (1) the severity, variability, and frequency of suicidal ideation assessed through real-time monitoring; and (2) suicide attempts at 3-week and 6-month follow-up among recently discharged psychiatric inpatients. METHODS: A sample of 249 adults (Mage = 40.43, 55.1% female, 91.4% White) completed a baseline assessment of their suicidal ideation characteristics during psychiatric hospitalization, five daily ecological momentary assessments (EMA) for 21 days following discharge, and follow-up assessments of suicide-related outcomes at 3-week and 6-month follow-up. RESULTS: Perceived controllability of suicidal thoughts was uniquely associated with the variability of EMA-assessed suicidal ideation and the presence of suicide attempts at 3-week, but not 6-month follow-up. No other characteristic of baseline suicidal ideation was uniquely associated with EMA-assessed suicidal ideation or the presence of suicide attempts at follow-up. CONCLUSIONS: Given links between the perceived controllability of suicidal ideation and (1) momentary variability of suicidal ideation and (2) suicide attempts over the subsequent 3 weeks, perceived controllability of suicidal thinking may be a useful marker of short-term risk that may be malleable to clinical intervention.

Lower odds of successful community discharge after medical hospitalization for Veterans with schizophrenia: A retrospective cohort study of national data.

Medical comorbidity, particularly cardiovascular diseases, contributes to high rates of hospital admission and early mortality in people with schizophrenia. The 30 days following hospital discharge represents a critical period for mitigating adverse outcomes. This study examined the odds of successful community discharge among Veterans with schizophrenia compared to those with major affective disorders and those without serious mental illness (SMI) after a heart failure hospital admission. Data for Veterans hospitalized for heart failure were obtained from the Veterans Health Administration (VHA) and Centers for Medicare & Medicaid Services between 2011 and 2019. Psychiatric diagnoses and medical comorbidities were assessed in the year prior to hospitalization. Successful community discharge was defined as remaining in the community without hospital readmission, death, or hospice for 30 days after hospital discharge. Logistic regression analyses adjusting for relevant factors were used to examine whether individuals with a schizophrenia diagnosis showed lower odds of successful community discharge versus both comparison groups. Out of 309,750 total Veterans in the sample, 7377 (2.4%) had schizophrenia or schizoaffective disorder and 32,472 (10.5%) had major affective disorders (bipolar disorder or recurrent major depressive disorder). Results from adjusted logistic regression analyses demonstrated significantly lower odds of successful community discharge for Veterans with schizophrenia compared to the non-SMI (Odds Ratio [OR]: 0.63; 95% Confidence Interval [CI]: 0.60, 0.66) and major affective disorders (OR: 0.65, 95%; CI: 0.62, 0.69) groups. Intervention efforts should target the transition from hospital to home in the subgroup of Veterans with schizophrenia.

Eyes of the beholders: Multi-method relationships between internalizing and externalizing symptom dimensions and aggression risk.

Although aggression occurs across a range of disorders, associations between dimensions of psychopathology and self- and other-directed aggression are not well understood. Investigating associations between psychopathology dimensions and aggression helps further understanding about the etiology of aggression, and ultimately, can inform intervention and prevention strategies. This study adopted a multi-method approach to examine associations between internalizing and externalizing dimensions of psychopathology and self- and other-directed aggression as a function of reporter (participant and informant) and modality of aggression measurement (subjective and objective). Participants were an unselected sample of 151 racially diverse adults recruited from the community. Dimensions of psychopathology were assessed using interview and questionnaire reports from participants and collateral informants, and forms of aggression were measured via subjective reports and an objective, laboratory aggression paradigm. Analyses of participant-reported psychological symptom data consistently linked externalizing symptoms to other-directed aggression, and internalizing symptoms to self-directed aggression. Results across informant and participant reporters replicated prior findings showing a significant interaction between internalizing and externalizing dimensions in predicting intimate partner violence. Most other effects in informant models were nonsignificant. The findings uncover consistency in and replicability of relationships between dimensions of psychopathology and certain manifestations of aggression and highlight the importance of examining multiple forms of aggression in etiological research. Examining aggression through a transdiagnostic lens can help us better understand and intervene upon processes implicated in devasting forms of self- and other-directed aggression.

Serious mental illness is associated with elevated risk of hospital readmission in veterans with heart failure.

OBJECTIVE: Adults with serious mental illness (SMI) have high rates of cardiovascular disease, particularly heart failure, which contribute to premature mortality. The aims were to examine 90- and 365-day all-cause medical or surgical hospital readmission in Veterans with SMI discharged from a heart failure hospitalization. The exploratory aim was to evaluate 180-day post-discharge engagement in cardiac rehabilitation, an effective intervention for heart failure. METHODS: This study used administrative data from the Veterans Health Administration (VHA) and Centers for Medicare & Medicaid Services between 2011 and 2019. SMI status and medical comorbidity were assessed in the year prior to hospitalization. Cox proportional hazards models (competing risk of death) were used to evaluate the relationship between SMI status and outcomes. Models were adjusted for VHA hospital site, demographics, and medical characteristics. RESULTS: The sample comprised 189,767 Veterans of which 23,671 (12.5%) had SMI. Compared to those without SMI, Veterans with SMI had significantly higher readmission rates at 90 (16.1% vs. 13.9%) and 365 (42.6% vs. 37.1%) days. After adjustment, risk of readmission remained significant (90 days: HR: 1.07, 95% CI: 1.03, 1.11; 365 days: HR: 1.10, 95% CI: 1.07, 1.12). SMI status was not significantly associated with 180-day cardiac rehabilitation engagement (HR: 0.98, 95% CI: 0.91, 1.07). CONCLUSIONS: Veterans with SMI and heart failure have higher 90- and 365-day hospital readmission rates even after adjustment. There were no differences in cardiac rehabilitation engagement based on SMI status. Future work should consider a broader range of post-discharge interventions to understand contributors to readmission.

Suicide risk profiles among service members and veterans exposed to suicide.

OBJECTIVES: Rates of suicide exposure are high among service members and Veterans and are especially concerning given the link between suicide exposure and subsequent suicide risk. However, to date, it is unclear which individuals who are exposed to suicide are subsequently at high risk for suicide. Latent profile analysis (LPA) can provide information on unique risk profiles and subgroups of service members and Veterans who have higher suicide risk after suicide exposure, which has not yet been empirically studied. The purpose of this study was to utilize LPA to identify subgroups of service members and Veterans who are at the highest risk for suicidal thoughts and behaviors following suicide exposure. METHODS: We analyzed data using LPA from 2570 service members and Veterans (82.1% male, 69.5% White, and 12.1% Latino/a/x) who completed the Military Suicide Research Consortium's Common Data Elements, a battery of self-report suicide-related measures. Psychopathology, substance use, mental health service utilization, interpersonal theory of suicide, and suicide exposure variables were used to validate classes. RESULTS: Three latent classes emerged from analyses, one low-risk class and two-high risk classes with differing profile compositions (one primarily differentiated by anxiety symptoms and one differentiated by substance use). CONCLUSION: Class-specific recommendations for suicide prevention efforts will be discussed.

Suicidal thoughts and behaviours among military veterans: protocol for a prospective, observational, neuroimaging study.

INTRODUCTION: This study's overarching goal is to examine the relationship between brain circuits and suicidal thoughts and behaviours (STBs) in a transdiagnostic sample of US military veterans. Because STBs have been linked with maladaptive decision-making and disorders linked to impulsivity, this investigation focuses on valence and inhibitory control circuits. METHODS AND ANALYSIS: In this prospective, observational study, we will collect functional MRI (fMRI), cognitive and clinical data from 136 veterans (target sample size) recruited from the Providence VA Health System (PVAHS): 68 with STBs and 68 matched controls. Behavioural data will be collected using standardised measures of STBs, psychiatric symptoms, cognition, functioning and medical history. Neuroimaging data will include structural, task and resting fMRI. We will conduct follow-up interviews and assessments at 6, 12 and 24 months post-enrolment. Primary analyses will compare data from veterans with and without STBs and will also evaluate whether activation and connectivity within circuits of valence and inhibition covary with historical and prospective patterns of suicidal ideation and behaviour. ETHICS AND DISSEMINATION: The PVAHS Institutional Review Board approved this study (2018-051). Written informed consent will be obtained from all participants. Findings from this study will be published in peer-reviewed journals and presented at local, regional, national and international conferences.Nauder Namaky, Ph.D.* nauder_namaky@brown.edu.

Comparing Lookback Periods to Ascertain Alzheimer's Disease and Related Dementias.

Claims data are a valuable resource for studying Alzheimer's disease and related dementias (ADRD). Alzheimer's disease and related dementias is often identified using a list of claims codes and a fixed lookback period of 3 years of data. However, a 1-year lookback or an approach using all-available lookback data could be beneficial based on different research questions. Thus, the purpose of this study was to compare 1-year and all-available lookback approaches to ascertaining ADRD compared to the standard 3-year approach. Using a cohort of Veterans hospitalized for heart failure (N = 373, 897), our results suggested high agreement (93% or greater) between the lookback periods. The 1-year lookback period had lower sensitivity (60%) and underestimated the prevalence of ADRD. These results suggest that 1-year and all-available lookback periods are viable approaches when using claims data.

Incidence of New Dementia Diagnosis in Veterans Admitted to Nursing Homes After Heart Failure Hospitalization.

BACKGROUND: Hospitalization with heart failure (HF) may signal an increased risk of Alzheimer's disease and related dementias (ADRD). Nursing homes routinely assess cognition but the association of these results with new ADRD diagnosis in a population at high risk of ADRD is not known. OBJECTIVE: To determine the association between nursing home cognitive assessment results and new diagnosis of dementia after heart failure hospitalization. METHODS: This retrospective cohort study included Veterans hospitalized for HF and discharged to nursing homes, from 2010 to 2015, without a prior diagnosis of ADRD. We determined mild, moderate, or severe cognitive impairment using multiple items of the nursing home admission assessment. We used Cox regression to determine the association of cognitive impairment with new ADRD diagnosis during 365 days of follow-up. RESULTS: The cohort included 7,472 residents, new diagnosis of ADRD occurred in 4,182 (56%). The adjusted hazard ratio of ADRD diagnosis was 4.5 (95% CI 4.2, 4.8) for the mild impairment group, 5.4 (95% CI 4.8, 5.9) for moderate impairment, and 4.0 (95% CI 3.2, 5.0) for severe impairment compared to the cognitively intact group. CONCLUSION: New ADRD diagnoses occurred in more than half of Veterans with HF admitted to nursing homes for post-acute care.

Linking Sleep and Aggression: Examining the Role of Response Inhibition and Emotional Processing.

Although sleep loss is theorized to increase aggression risk, knowledge regarding the sleep-aggression relationship, or explanatory psychological processes, is limited. This study examined whether recent sleep duration predicted subsequent laboratory aggression, and whether neurocognitive indices of attentional and motor inhibition and negative emotional processing explained the sleep-aggression relationship. Participants (n=141) wore Fitbit Flex devices and kept a sleep diary for three days. Event-related potentials were measured during an Emotional-Linguistic Go/No-Go task, followed by a laboratory aggression paradigm. Results of mixed-model repeated measures ANOVAs linked shorter sleep duration with reduced motor inhibition processing during negative and neutral word blocks, and greater aggression. However, neurocognitive indices did not explain the sleep-aggression link. This is the first evidence that naturally occurring sleep loss predicts increases in laboratory aggression across the task and suggests that shorter sleepers are more vulnerable to rash action in negative and neutral contexts. Implications of these findings for understanding aggression will be discussed.

Suicide Characteristics of Veterans Hospitalized for Suicide Ideation or Attempt.

INTRODUCTION: Veteran suicide rates continue to be unacceptably high, with the most common risk factor being a past suicide attempt (SA). However, some characteristics of suicidal ideation (SI) and behavior among Veterans hospitalized for suicide risk remain under-reported. MATERIALS AND METHODS: One hundred and eighty-three Veterans hospitalized for either an SA or SI with intent were screened for enrollment in a treatment study to prevent suicide. Veterans completed a demographic form, the Columbia-Suicide Severity Rating Scale, and the McLean borderline personality disorder screening measure shortly after inpatient psychiatric admission. Chi-squared and t-tests were used to compare suicide characteristics (e.g., intensity, duration, deterrents, and controllability) between Veterans with and without a lifetime history of SA. Thematic analyses of the reported method of SI were conducted. RESULTS: Sixty-seven percent of participants were hospitalized for SI and 33% were hospitalized for SA. Twenty-one percent of Veterans hospitalized for SI also endorsed a recent SA in the weeks preceding hospitalization. Most participants reported at least one lifetime SA (71%). Veterans with a lifetime history of SA reported greater frequency and duration of ideation in the week before hospitalization (t[169] = -2.56, P = .01; t[168] = -2.04, P = .04) while also reporting that deterrents were less likely to prevent an SA (t[107.09] = -3.58, P = .001) compared to those with no lifetime SA. CONCLUSION: Overall, Veterans hospitalized for SI/SA demonstrated markers of chronic suicide risk, as most participants endorsed a past attempt in their lifetime. Some Veterans admitted for SI also reported a past month's attempt, suggesting that in certain cases, hospitalization does not immediately follow an acute suicidal crisis. A past SA differentiated Veterans on average frequency and duration of SI as well as the perception of deterrents preventing suicidal behavior. Therefore, a thorough evaluation of suicide methods and intensity may be informative in treatment planning for Veterans at greatest risk of suicide.

Prevalence of Comorbid Depression and Insomnia Among Veterans Hospitalized for Heart Failure with Alzheimer Disease and Related Disorders.

OBJECTIVE: To examine prevalence of Alzheimer Disease and related dementias (ADRD) and patient characteristics as a function of comorbid insomnia and/or depression among heart failure (HF) patients discharged from hospitals. DESIGN: Retrospective cohort descriptive epidemiology study. SETTING: VA Hospitals. PARTICIPANTS: N = 373,897 Veterans hospitalized with heart failure from October 1, 2011 until September 30, 2020. MEASUREMENTS: We examined VA and Center for Medicare & Medicaid Services (CMS) coding in the year prior to admission using published ICD-9/10 codes for dementia, insomnia, and depression. The primary outcome was the prevalence of ADRD and the secondary outcomes were 30-day and 365-day mortality. RESULTS: The cohort were predominantly older adults (mean age = 72 years, SD = 11), male (97%), and White (73%). Dementia prevalence in participants without insomnia or depression was 12%. In those with both insomnia and depression, dementia prevalence was 34%. For insomnia alone and depression alone, dementia prevalence was 21% and 24%, respectively. Mortality followed a similar pattern with highest 30-day and 365-day mortality higher in those with both insomnia and depression. CONCLUSIONS: These results suggest that persons with both insomnia and depression are at an increased risk of ADRD and mortality compared to persons with one or neither condition. Screening for both insomnia and depression, especially in patients with other ADRD risk factors, could lead to earlier identification of ADRD. Understanding comorbid conditions which may represent earlier signs of ADRD may be critical in the identification of ADRD risk.

Threat effects on attention networks in individuals with a history of externalizing behaviors.

Research identifying the biobehavioral processes that link threat exposure to cognitive alterations can inform treatments designed to reduce perpetration of stress-induced aggression. The present study attempted to specify the effects of relatively predictable versus unpredictable threat on two attention networks, attentional alerting and executive control. In a sample of adults (n = 74, 35 % identifying as women, Mage = 32.85) with high rates of externalizing behaviors (e.g., substance use, criminal/legal system involvement, aggressivity), we measured event-related brain activity during an attention network test that manipulated cognitive systems activation under relatively unpredictable and predictable threat conditions. Results showed that threat exposure alters attentional alerting and executive control. The predictable threat condition, relative to unpredictable threat, increased visual alerting (N1 amplitude to alert vs. no alert cue conditions) and decreased attention to the task (P3 amplitude to subsequent task-relevant flankers, but these effects did not survive adjusting for multiple tests. In contrast, overall threat and unpredictable threat conditions were associated with faster response time to alert cue (versus no cue) and poorer conflict processing, operationalized as flanker N2 reductions and slower response time to incongruent (versus congruent) flanker trials. These results expand what is known about threat-related modulation of cognition in a sample of individuals with histories of externalizing behaviors.

Comparing Resident, Proxy, and Staff Respondents for Nursing Home Residents' Preferences for Everyday Living.

To encourage person-centered care, the Centers for Medicare and Medicaid require nursing homes to measure resident preferences using the Preferences Assessment Tool (PAT). No known research has examined the implications of respondent type (i.e., resident, proxy, staff) on preference importance; therefore, the purpose of this study was to compare the importance of preferences depending on which respondent completed the PAT. Participants included 16,111 Veterans discharged to community-based skilled nursing facilities after hospitalization for heart failure. A majority (95%) of residents completed the PAT compared to proxy (3%) and staff (2%). Proxy responders were both more and less likely to indicate individual preferences as important compared to residents. Staff members were consistently less likely to indicate all preferences as important compared to residents. Findings from this study emphasize the need for proxy and staff to find methods to better understand residents' preferences when residents are not able to participate in assessments.

Threat effects on cognitive systems: Testing links to aggression proneness.

The biobehavioral study of aggression has implications for expanding our understanding of transdiagnostic processes that increase risk for disinhibited behaviors. Toward this end, our study tested tenets from the process model of aggression (Verona & Bresin, 2015). First, we expected that the predictability of threat would differentially alter cognitive networks, including attentional alerting and executive control. Second, we examined the moderating effects of self- and informant reports of aggression on threat-related changes in cognitive functioning. Using event-related potential (ERP) measures of cognitive-attentional processes, 143 community individuals participated in a well-validated and translational threat manipulation (NPU) task (Schmitz & Grillon, 2012) while completing the Attention Network Test (Fan et al., 2002). Analyses revealed that relatively unpredictable threat quickened alerting-related reaction time, whereas predictable threat interfered with processing of flanker task stimuli. The results, however, failed to show reliable relationships between aggression proneness and threat-related cognitive alterations. The findings fit with a broader literature on cognitive and behavioral outputs of threat activation and provide fruitful avenues for better understanding threat-related aggression. (PsycInfo Database Record (c) 2023 APA, all rights reserved).

Under the Surface: The Role of Covert Cues in Peer Suicide Risk Referrals.

Suicidal thoughts and behaviors are highly prevalent among adolescents, and peers are often the first, and sometimes only, people to know about youth suicidality. Since many adolescents do not directly disclose suicidal thoughts, school-based suicide prevention programs aim to train youth to recognize warning signs of suicide in their peers that serve as "cues" to refer at-risk peers to an appropriate adult. However, peer-presented cues vary widely in presentation, and adolescents are more likely to recognize overt (i.e., obvious or explicit) as opposed to covert (i.e., hidden or implied) cues. The type of cue exhibited may, in turn, affect whether adolescents make a referral to an adult. The current study examined whether training suicide prevention influences referral intentions for overt and covert suicide cues. Participants included 244 high school students (54% female; M age = 16.21) in the Southeastern United States who received suicide prevention training (SOS; Signs of Suicide) as part of their health curriculum. Prior to training, students endorsed higher referral intentions for peers exhibiting overt compared to covert cues. Training was associated with increased intentions to refer peers across cue type, but referral intentions for covert cues improved significantly from pre to post-training while those for overt cues remained high and stable. Findings suggest that suicide prevention training might differentially improve students' ability to detect and respond appropriately to less obvious indicators of suicide risk. These findings may inform the adaptation and development of future, more nuanced school-based suicide prevention programming.

Those left behind: A scoping review of the effects of suicide exposure on veterans, service members, and military families.

Veteran and service member suicide remains a significant public health concern. One factor that may impact suicide risk is suicide exposure-knowing someone who has died by suicide or attempted suicide. However, the majority of the extant literature has focused on nonmilitary samples, which may not generalize to military veterans and service members. The current review synthesizes findings regarding suicide exposure in military veterans, service members, their families, and military systems. Our review suggests that the relationship between suicide exposure, suicide risk, and mental health outcomes remains inconsistent. Future research should further explore this important area.

Feasibility and acceptability of the mobile application for the prevention of suicide (MAPS).

Rates of Veteran suicide continue to be unacceptably high. Suicidal ideation and behavior are contextually and situationally based, limiting the ability of traditional prevention and assessment strategies to prevent acute crises. The Mobile Application for the Prevention of Suicide (MAPS) is a novel, smartphone-based intervention strategy that utilizes ecological momentary assessment to identify suicide risk in the moment and delivers treatment strategies in real-time. The app is personalized to each patient, utilizes empirically intervention strategies, and is delivered adjunctively to Veterans Affairs (VA) treatment as usual. This article outlines the MAPS intervention and presents results of an open trial to assess its feasibility and acceptability. Eight Veterans were recruited from aVeterans Affairs Medical Center (VAMC) psychiatric inpatient unit following hospitalization for either a suicide ideation or attempt. Veterans received MAPS for 2 weeks post-hospitalization. Veterans reported high levels of satisfaction with MAPS and all opted to extend their use of MAPS beyond the 2-week trial period. MAPS may be a useful adjunctive to treatment as usual for high-risk Veterans by allowing patients and their providers to better track suicide risk and deploy intervention strategies when risk is detected.

Childhood Maltreatment, Emotional Response Inhibition, and Suicide in Psychiatric Inpatients.

Childhood abuse and/or neglect adversely influences development of neurocognitive systems that regulate affect and behavior. Poor inhibitory control over emotional reactions is thus one potential pathway from maltreatment to suicide. Adult psychiatric inpatients completed the Childhood Trauma Questionnaire and an emotional stop-signal task indexing negative emotional action termination (NEAT): the ability to inhibit ongoing motor reactions to aversive stimuli triggered by negative affect. Clinical interviews assessed suicidal thoughts and behaviors during hospitalization (n = 131) and at follow-up assessments 6 months later (n = 87). Our primary aim was to examine whether maltreatment history and NEAT explain overlapping variance in suicidal behaviors (1) retrospectively and (2) 6 months following hospital discharge. Contrary to prediction, childhood maltreatment was unrelated to history of suicidal behaviors. However, NEAT was consistently associated with prior suicidal acts, even controlling for suicidal ideation and demographic covariates. NEAT similarly contributed to the prediction of post-discharge suicidal behaviors, whereas we found no effect of maltreatment history. The present study suggests that NEAT captures suicide risk independently of childhood maltreatment. Results implicated NEAT impairment specifically, rather than broader response inhibition deficits (e.g., to positive stimuli), in past and future suicidal behaviors. These findings provide preliminary support for NEAT as a behavioral vulnerability marker for suicide, with implications for understanding links between maltreatment history and suicidal acts.