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Ladner L, Shick T, Adhikari S, Marvin E, Weppner J, Kablinger A. Association between impulsivity, self-harm, suicidal ideation, and suicide attempts in traumatic brain injury patients. J Neurotrauma 2024. [PMID: 39150012 DOI: 10.1089/neu.2024.0167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/17/2024] Open
Abstract
Traumatic brain injury (TBI) affects over 48 million people worldwide each year. Suicide is common in TBI, and there are several known contributing factors, including severe TBI, depression, alcohol use, and male sex. Impulsivity, or the tendency to act quickly with little thought, may be an early predictor of suicidality following TBI. The purpose of this study was to evaluate the risk of suicidality in patients with a prior history of impulsivity following a traumatic brain injury (TBI). Using de-identified electronic health records from the TriNetX United States Collaborative Network with Natural Language Processing, three cohorts were generated: the impulsivity TBI cohort (I+TBI+) included subjects with a diagnosis of impulsivity before a diagnosis of TBI; the no impulsivity TBI cohort (I-TBI+) included patients with TBI but no impulsivity; the impulsivity no TBI cohort (I+TBI-) included patients with impulsivity but TBI. Two analyses were conducted, including analysis 1 (impulsivity TBI vs. no impulsivity TBI) and analysis 2 (impulsivity TBI vs. impulsivity no TBI). Patients were 1:1 propensity score matched by age, sex, race, ethnicity, psychiatric diagnoses, and antidepressant use. Outcomes included a diagnosis of self-harm, suicidal ideation, or a suicide attempt within one year after the index event. The all-time incidence of each outcome was assessed across different age categories. The chi-square test (categorical variables) and t-test (numerical variables) were used to assess for differences between groups. A total of 1,292,776 TBI patients were identified in the study. After 1:1 propensity score-matching, there were 20,694 patients (mean [SD] age, 48.1 [21.8]; 8,424 females [40.7%]) with impulsivity and TBI (I+TBI+), 1,272,082 patients (mean [SD] age, 46.0 [23.1]; 562,705 females [44.2%]) with TBI alone (I-TBI+), and 90,669 patients (mean [SD] age, 43.7 [22.6]; 45,188 females [49.8%]) with impulsivity alone (I+TBI-). Within the first year after a TBI, patients with impulsivity were more likely to exhibit self-harm (P < 0.001), suicidal ideation (P < 0.001) or a suicide attempt (P < 0.001). Compared to TBI patients without impulsivity, those with impulsivity had a four-fold increase in the incidence of self-harm (2.81% vs. 0.63%), an eight-fold increase in suicidal ideation (52.42% vs. 6.41%), and a twenty-one-fold increase in suicide attempts (32.02% vs. 1.50%). This study suggests that impulsivity diagnosed before a TBI may increase the risk of post-traumatic suicidality, with a four-fold increased risk of self-harm, an eight-fold increased risk of suicidal ideation and a twenty-one-fold increased risk of suicide attempts. This characterizes a group of at-risk individuals who may benefit from early psychiatric support and targeted interventions following a TBI.
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Affiliation(s)
- Liliana Ladner
- Virginia Tech Carilion Research Institute, 2 Riverside Circle, Roanoke, Virginia, United States, 24016-4950;
| | - Tyler Shick
- Virginia Tech Carilion Research Institute, Roanoke, Virginia, United States;
| | - Srijan Adhikari
- Virginia Polytechnic Institute and State University, School of Neuroscience, Blacksburg, Virginia, United States
- Carilion Clinic, Department of Neurosurgery, Roanoke, Virginia, United States;
| | - Eric Marvin
- Virginia Polytechnic Institute and State University, School of Neuroscience, Blacksburg, Virginia, United States
- Carilion Clinic, Department of Neurosurgery, Roanoke, Virginia, United States;
| | - Justin Weppner
- Carilion Clinic, Internal Medicine, Roanoke, Virginia, United States;
| | - Anita Kablinger
- Carilion Clinic, Department of Psychiatry and Behavioral Medicine, Roanoke, Virginia, United States;
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Aaronson AL, Smith B, Krese K, Barnhart M, Adamson M, de Wit H, Philip NS, Brenner LA, Bender-Pape T, Herrold AA. Impulsivity and Psychiatric Diagnoses as Mediators of Suicidal Ideation and Suicide Attempts Among Veterans With Traumatic Brain Injury. J Neuropsychiatry Clin Neurosci 2024; 36:125-133. [PMID: 38192217 PMCID: PMC11018458 DOI: 10.1176/appi.neuropsych.20230044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/10/2024]
Abstract
OBJECTIVE Traumatic brain injury (TBI) is a risk factor for suicide, but questions related to mechanisms remain unanswered. Impulsivity is a risk factor for suicide and is a common sequela of TBI. The authors explored the relationships between TBI and both suicidal ideation and suicide attempts and explored whether impulsivity and comorbid psychiatric diagnoses mediate these relationships. METHODS This cross-sectional retrospective chart review study included 164 veterans enrolled in a previous study. Sixty-nine veterans had no TBI history, and 95 had a TBI history (mild, N=44; moderate, N=13; severe, N=12; and unclear severity, N=26). To examine the associations between TBI and suicidal ideation or suicide attempts, as well as potential mediators of these relationships, chi-square tests, t tests, and logistic regression models were used. RESULTS Unadjusted analyses indicated that veterans with TBI were more likely to report suicidal ideation; however, in analyses controlling for mediators, this relationship was no longer significant. Among veterans with TBI, suicidal ideation was related most strongly to high impulsivity (odds ratio=15.35, 95% CI=2.43-96.79), followed by depression (odds ratio=5.73, 95% CI=2.53-12.99) and posttraumatic stress disorder (odds ratio=2.57, 95% CI=1.03-6.42). TBI was not related to suicide attempts, yet suicide attempts were related to high impulsivity (odds ratio=6.95, 95% CI=1.24-38.75) and depression (odds ratio=3.89, 95% CI=1.56-9.40). CONCLUSIONS These findings suggest that impulsivity, followed by psychiatric diagnoses, most strongly mediate the relationships between TBI and both suicidal ideation and suicide attempts. Impulsivity may be mechanistically related to, and serve as a future treatment target for, suicidality among veterans with TBI.
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Affiliation(s)
- Alexandra L Aaronson
- Mental Health Service Line (Aaronson) and Research Service Line (Smith, Bender-Pape, Herrold), Edward J. Hines Veterans Administration Hospital, Hines, Ill.; Department of Psychiatry, University of Illinois, Chicago (Aaronson); Brain Innovation Center, Shirley Ryan AbilityLab, Chicago (Krese); Chicago Association for Research and Education in Science, Hines, Ill. (Krese); Rocky Mountain Mental Illness Research, Education, and Clinical Center for Suicide Prevention, Rocky Mountain Regional Veterans Affairs Medical Center, Aurora, Colo. (Barnhart, Brenner); Department of Physical Medicine and Rehabilitation, University of Colorado Anschutz Medical Campus, Aurora (Barnhart, Brenner); Rehabilitation Service, Veterans Affairs Palo Alto Health Care System, Palo Alto, Calif. (Adamson); Department of Neurosurgery, Stanford University, Stanford, Calif. (Adamson); Department of Psychiatry and Behavioral Neuroscience, University of Chicago, Chicago (de Wit); Center for Neurorestoration and Neurotechnology, Veterans Affairs Providence Health Care System, Providence, R.I. (Philip); Department of Psychiatry and Human Behavior, Alpert Medical School of Brown University, Providence, R.I. (Philip); Departments of Physical Medicine and Rehabilitation (Bender-Pape) and Psychiatry and Behavioral Sciences (Herrold), Northwestern University, Chicago
| | - Bridget Smith
- Mental Health Service Line (Aaronson) and Research Service Line (Smith, Bender-Pape, Herrold), Edward J. Hines Veterans Administration Hospital, Hines, Ill.; Department of Psychiatry, University of Illinois, Chicago (Aaronson); Brain Innovation Center, Shirley Ryan AbilityLab, Chicago (Krese); Chicago Association for Research and Education in Science, Hines, Ill. (Krese); Rocky Mountain Mental Illness Research, Education, and Clinical Center for Suicide Prevention, Rocky Mountain Regional Veterans Affairs Medical Center, Aurora, Colo. (Barnhart, Brenner); Department of Physical Medicine and Rehabilitation, University of Colorado Anschutz Medical Campus, Aurora (Barnhart, Brenner); Rehabilitation Service, Veterans Affairs Palo Alto Health Care System, Palo Alto, Calif. (Adamson); Department of Neurosurgery, Stanford University, Stanford, Calif. (Adamson); Department of Psychiatry and Behavioral Neuroscience, University of Chicago, Chicago (de Wit); Center for Neurorestoration and Neurotechnology, Veterans Affairs Providence Health Care System, Providence, R.I. (Philip); Department of Psychiatry and Human Behavior, Alpert Medical School of Brown University, Providence, R.I. (Philip); Departments of Physical Medicine and Rehabilitation (Bender-Pape) and Psychiatry and Behavioral Sciences (Herrold), Northwestern University, Chicago
| | - Kelly Krese
- Mental Health Service Line (Aaronson) and Research Service Line (Smith, Bender-Pape, Herrold), Edward J. Hines Veterans Administration Hospital, Hines, Ill.; Department of Psychiatry, University of Illinois, Chicago (Aaronson); Brain Innovation Center, Shirley Ryan AbilityLab, Chicago (Krese); Chicago Association for Research and Education in Science, Hines, Ill. (Krese); Rocky Mountain Mental Illness Research, Education, and Clinical Center for Suicide Prevention, Rocky Mountain Regional Veterans Affairs Medical Center, Aurora, Colo. (Barnhart, Brenner); Department of Physical Medicine and Rehabilitation, University of Colorado Anschutz Medical Campus, Aurora (Barnhart, Brenner); Rehabilitation Service, Veterans Affairs Palo Alto Health Care System, Palo Alto, Calif. (Adamson); Department of Neurosurgery, Stanford University, Stanford, Calif. (Adamson); Department of Psychiatry and Behavioral Neuroscience, University of Chicago, Chicago (de Wit); Center for Neurorestoration and Neurotechnology, Veterans Affairs Providence Health Care System, Providence, R.I. (Philip); Department of Psychiatry and Human Behavior, Alpert Medical School of Brown University, Providence, R.I. (Philip); Departments of Physical Medicine and Rehabilitation (Bender-Pape) and Psychiatry and Behavioral Sciences (Herrold), Northwestern University, Chicago
| | - Meghan Barnhart
- Mental Health Service Line (Aaronson) and Research Service Line (Smith, Bender-Pape, Herrold), Edward J. Hines Veterans Administration Hospital, Hines, Ill.; Department of Psychiatry, University of Illinois, Chicago (Aaronson); Brain Innovation Center, Shirley Ryan AbilityLab, Chicago (Krese); Chicago Association for Research and Education in Science, Hines, Ill. (Krese); Rocky Mountain Mental Illness Research, Education, and Clinical Center for Suicide Prevention, Rocky Mountain Regional Veterans Affairs Medical Center, Aurora, Colo. (Barnhart, Brenner); Department of Physical Medicine and Rehabilitation, University of Colorado Anschutz Medical Campus, Aurora (Barnhart, Brenner); Rehabilitation Service, Veterans Affairs Palo Alto Health Care System, Palo Alto, Calif. (Adamson); Department of Neurosurgery, Stanford University, Stanford, Calif. (Adamson); Department of Psychiatry and Behavioral Neuroscience, University of Chicago, Chicago (de Wit); Center for Neurorestoration and Neurotechnology, Veterans Affairs Providence Health Care System, Providence, R.I. (Philip); Department of Psychiatry and Human Behavior, Alpert Medical School of Brown University, Providence, R.I. (Philip); Departments of Physical Medicine and Rehabilitation (Bender-Pape) and Psychiatry and Behavioral Sciences (Herrold), Northwestern University, Chicago
| | - Maheen Adamson
- Mental Health Service Line (Aaronson) and Research Service Line (Smith, Bender-Pape, Herrold), Edward J. Hines Veterans Administration Hospital, Hines, Ill.; Department of Psychiatry, University of Illinois, Chicago (Aaronson); Brain Innovation Center, Shirley Ryan AbilityLab, Chicago (Krese); Chicago Association for Research and Education in Science, Hines, Ill. (Krese); Rocky Mountain Mental Illness Research, Education, and Clinical Center for Suicide Prevention, Rocky Mountain Regional Veterans Affairs Medical Center, Aurora, Colo. (Barnhart, Brenner); Department of Physical Medicine and Rehabilitation, University of Colorado Anschutz Medical Campus, Aurora (Barnhart, Brenner); Rehabilitation Service, Veterans Affairs Palo Alto Health Care System, Palo Alto, Calif. (Adamson); Department of Neurosurgery, Stanford University, Stanford, Calif. (Adamson); Department of Psychiatry and Behavioral Neuroscience, University of Chicago, Chicago (de Wit); Center for Neurorestoration and Neurotechnology, Veterans Affairs Providence Health Care System, Providence, R.I. (Philip); Department of Psychiatry and Human Behavior, Alpert Medical School of Brown University, Providence, R.I. (Philip); Departments of Physical Medicine and Rehabilitation (Bender-Pape) and Psychiatry and Behavioral Sciences (Herrold), Northwestern University, Chicago
| | - Harriet de Wit
- Mental Health Service Line (Aaronson) and Research Service Line (Smith, Bender-Pape, Herrold), Edward J. Hines Veterans Administration Hospital, Hines, Ill.; Department of Psychiatry, University of Illinois, Chicago (Aaronson); Brain Innovation Center, Shirley Ryan AbilityLab, Chicago (Krese); Chicago Association for Research and Education in Science, Hines, Ill. (Krese); Rocky Mountain Mental Illness Research, Education, and Clinical Center for Suicide Prevention, Rocky Mountain Regional Veterans Affairs Medical Center, Aurora, Colo. (Barnhart, Brenner); Department of Physical Medicine and Rehabilitation, University of Colorado Anschutz Medical Campus, Aurora (Barnhart, Brenner); Rehabilitation Service, Veterans Affairs Palo Alto Health Care System, Palo Alto, Calif. (Adamson); Department of Neurosurgery, Stanford University, Stanford, Calif. (Adamson); Department of Psychiatry and Behavioral Neuroscience, University of Chicago, Chicago (de Wit); Center for Neurorestoration and Neurotechnology, Veterans Affairs Providence Health Care System, Providence, R.I. (Philip); Department of Psychiatry and Human Behavior, Alpert Medical School of Brown University, Providence, R.I. (Philip); Departments of Physical Medicine and Rehabilitation (Bender-Pape) and Psychiatry and Behavioral Sciences (Herrold), Northwestern University, Chicago
| | - Noah S Philip
- Mental Health Service Line (Aaronson) and Research Service Line (Smith, Bender-Pape, Herrold), Edward J. Hines Veterans Administration Hospital, Hines, Ill.; Department of Psychiatry, University of Illinois, Chicago (Aaronson); Brain Innovation Center, Shirley Ryan AbilityLab, Chicago (Krese); Chicago Association for Research and Education in Science, Hines, Ill. (Krese); Rocky Mountain Mental Illness Research, Education, and Clinical Center for Suicide Prevention, Rocky Mountain Regional Veterans Affairs Medical Center, Aurora, Colo. (Barnhart, Brenner); Department of Physical Medicine and Rehabilitation, University of Colorado Anschutz Medical Campus, Aurora (Barnhart, Brenner); Rehabilitation Service, Veterans Affairs Palo Alto Health Care System, Palo Alto, Calif. (Adamson); Department of Neurosurgery, Stanford University, Stanford, Calif. (Adamson); Department of Psychiatry and Behavioral Neuroscience, University of Chicago, Chicago (de Wit); Center for Neurorestoration and Neurotechnology, Veterans Affairs Providence Health Care System, Providence, R.I. (Philip); Department of Psychiatry and Human Behavior, Alpert Medical School of Brown University, Providence, R.I. (Philip); Departments of Physical Medicine and Rehabilitation (Bender-Pape) and Psychiatry and Behavioral Sciences (Herrold), Northwestern University, Chicago
| | - Lisa A Brenner
- Mental Health Service Line (Aaronson) and Research Service Line (Smith, Bender-Pape, Herrold), Edward J. Hines Veterans Administration Hospital, Hines, Ill.; Department of Psychiatry, University of Illinois, Chicago (Aaronson); Brain Innovation Center, Shirley Ryan AbilityLab, Chicago (Krese); Chicago Association for Research and Education in Science, Hines, Ill. (Krese); Rocky Mountain Mental Illness Research, Education, and Clinical Center for Suicide Prevention, Rocky Mountain Regional Veterans Affairs Medical Center, Aurora, Colo. (Barnhart, Brenner); Department of Physical Medicine and Rehabilitation, University of Colorado Anschutz Medical Campus, Aurora (Barnhart, Brenner); Rehabilitation Service, Veterans Affairs Palo Alto Health Care System, Palo Alto, Calif. (Adamson); Department of Neurosurgery, Stanford University, Stanford, Calif. (Adamson); Department of Psychiatry and Behavioral Neuroscience, University of Chicago, Chicago (de Wit); Center for Neurorestoration and Neurotechnology, Veterans Affairs Providence Health Care System, Providence, R.I. (Philip); Department of Psychiatry and Human Behavior, Alpert Medical School of Brown University, Providence, R.I. (Philip); Departments of Physical Medicine and Rehabilitation (Bender-Pape) and Psychiatry and Behavioral Sciences (Herrold), Northwestern University, Chicago
| | - Theresa Bender-Pape
- Mental Health Service Line (Aaronson) and Research Service Line (Smith, Bender-Pape, Herrold), Edward J. Hines Veterans Administration Hospital, Hines, Ill.; Department of Psychiatry, University of Illinois, Chicago (Aaronson); Brain Innovation Center, Shirley Ryan AbilityLab, Chicago (Krese); Chicago Association for Research and Education in Science, Hines, Ill. (Krese); Rocky Mountain Mental Illness Research, Education, and Clinical Center for Suicide Prevention, Rocky Mountain Regional Veterans Affairs Medical Center, Aurora, Colo. (Barnhart, Brenner); Department of Physical Medicine and Rehabilitation, University of Colorado Anschutz Medical Campus, Aurora (Barnhart, Brenner); Rehabilitation Service, Veterans Affairs Palo Alto Health Care System, Palo Alto, Calif. (Adamson); Department of Neurosurgery, Stanford University, Stanford, Calif. (Adamson); Department of Psychiatry and Behavioral Neuroscience, University of Chicago, Chicago (de Wit); Center for Neurorestoration and Neurotechnology, Veterans Affairs Providence Health Care System, Providence, R.I. (Philip); Department of Psychiatry and Human Behavior, Alpert Medical School of Brown University, Providence, R.I. (Philip); Departments of Physical Medicine and Rehabilitation (Bender-Pape) and Psychiatry and Behavioral Sciences (Herrold), Northwestern University, Chicago
| | - Amy A Herrold
- Mental Health Service Line (Aaronson) and Research Service Line (Smith, Bender-Pape, Herrold), Edward J. Hines Veterans Administration Hospital, Hines, Ill.; Department of Psychiatry, University of Illinois, Chicago (Aaronson); Brain Innovation Center, Shirley Ryan AbilityLab, Chicago (Krese); Chicago Association for Research and Education in Science, Hines, Ill. (Krese); Rocky Mountain Mental Illness Research, Education, and Clinical Center for Suicide Prevention, Rocky Mountain Regional Veterans Affairs Medical Center, Aurora, Colo. (Barnhart, Brenner); Department of Physical Medicine and Rehabilitation, University of Colorado Anschutz Medical Campus, Aurora (Barnhart, Brenner); Rehabilitation Service, Veterans Affairs Palo Alto Health Care System, Palo Alto, Calif. (Adamson); Department of Neurosurgery, Stanford University, Stanford, Calif. (Adamson); Department of Psychiatry and Behavioral Neuroscience, University of Chicago, Chicago (de Wit); Center for Neurorestoration and Neurotechnology, Veterans Affairs Providence Health Care System, Providence, R.I. (Philip); Department of Psychiatry and Human Behavior, Alpert Medical School of Brown University, Providence, R.I. (Philip); Departments of Physical Medicine and Rehabilitation (Bender-Pape) and Psychiatry and Behavioral Sciences (Herrold), Northwestern University, Chicago
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