Language
English
Publication Date
1-1-2023
Journal
Neuropsychology
DOI
10.1037/neu0000855
PMID
36174184
PMCID
PMC10117581
PubMedCentral® Posted Date
1-1-2024
PubMedCentral® Full Text Version
Author MSS
Abstract
Objective: While outcome from mild traumatic brain injury (mTBI) is generally favorable, concern remains over potential negative long-term effects, including impaired cognition. This study examined the link between cognitive performance and remote mTBIs within the Long-term Impact of Military-relevant Brain Injury Consortium-Chronic Effects of Neurotrauma Consortium (LIMBIC-CENC) multicenter, observational study of Veterans and service members (SMs) with combat exposure.
Method: Baseline data of the participants passing all cognitive performance validity tests (n = 1,310) were used to conduct a cross-sectional analysis. Using multivariable regression models that adjusted for covariates, including age and estimated preexposure intellectual function, positive mTBI history groups, 1-2 lifetime mTBIs (nonrepetitive, n = 614), and 3 + lifetime mTBIs (repetitive; n = 440) were compared to TBI negative controls (n = 256) on each of the seven cognitive domains computed by averaging Z scores of prespecified component tests. Significance levels were adjusted for multiple comparisons.
Results: Neither of the mTBI positive groups differed from the mTBI negative control group on any of the cognitive domains in multivariable analyses. Findings were also consistently negative across sensitivity analyses (e.g., mTBIs as a continuous variable, number of blast-related mTBIs, or years since the first and last mTBI).
Conclusions: Our findings demonstrate that the average veteran or SM who experienced one or more mTBIs does not have postacute objective cognitive deficits due to mTBIs alone. A holistic health care approach including comorbidity assessment is indicated for patients reporting chronic cognitive difficulties after mTBI(s), and strategies for addressing misattribution may be beneficial. Future study is recommended with longitudinal designs to assess within-subjects decline from potential neurodegeneration. (PsycInfo Database Record (c) 2023 APA, all rights reserved).
Keywords
Humans, Brain Concussion, Cross-Sectional Studies, Neuropsychological Tests, Military Personnel, Veterans, Cognition, Stress Disorders, Post-Traumatic
Published Open-Access
yes
Recommended Citation
Walker, William C; O'Neil, Maya E; Ou, Zhining; et al., "Can Mild Traumatic Brain Injury Alter Cognition Chronically? A LIMBIC-CENC Multicenter Study" (2023). Faculty, Staff and Students Publications. 5994.
https://digitalcommons.library.tmc.edu/baylor_docs/5994