TY - JOUR
T1 - Association between Traumatic Brain Injury and Subsequent Cardiovascular Disease among Post-9/11-Era Veterans
AU - Stewart, Ian J.
AU - Amuan, Megan E.
AU - Wang, Chen Pin
AU - Kennedy, Eamonn
AU - Kenney, Kimbra
AU - Werner, J. Kent
AU - Carlson, Kathleen F.
AU - Tate, David F.
AU - Pogoda, Terri K.
AU - Dismuke-Greer, Clara E.
AU - Wright, W. Shea
AU - Wilde, Elisabeth A.
AU - Pugh, Mary Jo
N1 - Funding Information:
receiving grants from Congressionally Directed Medical Research Programs, the National Institutes of Health, and the US Department of Veterans Affairs during the conduct of the study. Dr Pogoda reported receiving grants from the VA Boston Healthcare System and the US Army Medical Research Acquisition Activity. Dr Pugh reported receiving a VA Health Services Research and Development Service award and being supported by the VA Health Services Research and Development Service Informatics, Decision-Enhancement, and Analytic Sciences Center of Innovation. No other disclosures were reported.
Funding Information:
Funding/Support: This work was supported by the Assistant Secretary of Defense for Health Affairs endorsed by the Department of Defense, through the Psychological Health/Traumatic Brain Injury Research Program Long-Term Impact of Military-Relevant Brain Injury Consortium award/ W81XWH-18-PH/TBIRP-LIMBIC, under awards W81XWH1920067 and W81XWH-13-2-0095; by the US Department of Veterans Affairs award I01 RX003443; and by a Uniformed Services University Award HU00012120008 from the Military Cardiovascular Outcomes Research Program.
Publisher Copyright:
© 2022 American Medical Association. All rights reserved.
PY - 2022/11/14
Y1 - 2022/11/14
N2 - Importance: Traumatic brain injury (TBI) was common among US service members deployed to Iraq and Afghanistan. Although there is some evidence to suggest that TBI increases the risk of cardiovascular disease (CVD), prior reports were predominantly limited to cerebrovascular outcomes. The potential association of TBI with CVD has not been comprehensively examined in post-9/11-era veterans. Objective: To determine the association between TBI and subsequent CVD in post-9/11-era veterans. Design, Setting, and Participants: This was a retrospective cohort study conducted from October 1, 1999, to September 30, 2016. Participants were followed up until December 31, 2018. Included in the study were administrative data from the US Department of Veterans Affairs and the Department of Defense from the Long-term Impact of Military-Relevant Brain Injury Consortium-Chronic Effects of Neurotrauma Consortium. Participants were excluded if dates did not overlap with the study period. Data analysis was conducted between November 22, 2021, and June 28, 2022. Exposures: History of TBI as measured by diagnosis in health care records. Main Outcomes and Measures: Composite end point of CVD: coronary artery disease, stroke, peripheral artery disease, and cardiovascular death. Results: Of the 2530875 veterans from the consortium, after exclusions, a total of 1559928 veterans were included in the analysis. A total of 301169 veterans (19.3%; median [IQR] age, 27 [23-34] years; 265217 male participants [88.1]) with a TBI history and 1258759 veterans (80.7%; median [IQR] age, 29 [24-39] years; 1012159 male participants [80.4%]) without a TBI history were included for analysis. Participants were predominately young (1058054 [67.8%] <35 years at index date) and male (1277376 [81.9%]). Compared with participants without a history of TBI, diagnoses of mild TBI (hazard ratio [HR], 1.62; 95% CI, 1.58-1.66; P <.001), moderate to severe TBI (HR, 2.63; 95% CI, 2.51-2.76; P <.001), and penetrating TBI (HR, 4.60; 95% CI, 4.26-4.96; P <.001) were associated with CVD in adjusted models. In analyses of secondary outcomes, all severities of TBI were associated with the individual components of the composite outcome except penetrating TBI and CVD death. Conclusions and Relevance: Results of this cohort study suggest that US veterans with a TBI history were more likely to develop CVD compared with veterans without a TBI history. Given the relatively young age of the cohort, these results suggest that there may be an increased burden of CVD as these veterans age and develop other CVD risk factors. Future studies are needed to determine if the increased risk associated with TBI is modifiable..
AB - Importance: Traumatic brain injury (TBI) was common among US service members deployed to Iraq and Afghanistan. Although there is some evidence to suggest that TBI increases the risk of cardiovascular disease (CVD), prior reports were predominantly limited to cerebrovascular outcomes. The potential association of TBI with CVD has not been comprehensively examined in post-9/11-era veterans. Objective: To determine the association between TBI and subsequent CVD in post-9/11-era veterans. Design, Setting, and Participants: This was a retrospective cohort study conducted from October 1, 1999, to September 30, 2016. Participants were followed up until December 31, 2018. Included in the study were administrative data from the US Department of Veterans Affairs and the Department of Defense from the Long-term Impact of Military-Relevant Brain Injury Consortium-Chronic Effects of Neurotrauma Consortium. Participants were excluded if dates did not overlap with the study period. Data analysis was conducted between November 22, 2021, and June 28, 2022. Exposures: History of TBI as measured by diagnosis in health care records. Main Outcomes and Measures: Composite end point of CVD: coronary artery disease, stroke, peripheral artery disease, and cardiovascular death. Results: Of the 2530875 veterans from the consortium, after exclusions, a total of 1559928 veterans were included in the analysis. A total of 301169 veterans (19.3%; median [IQR] age, 27 [23-34] years; 265217 male participants [88.1]) with a TBI history and 1258759 veterans (80.7%; median [IQR] age, 29 [24-39] years; 1012159 male participants [80.4%]) without a TBI history were included for analysis. Participants were predominately young (1058054 [67.8%] <35 years at index date) and male (1277376 [81.9%]). Compared with participants without a history of TBI, diagnoses of mild TBI (hazard ratio [HR], 1.62; 95% CI, 1.58-1.66; P <.001), moderate to severe TBI (HR, 2.63; 95% CI, 2.51-2.76; P <.001), and penetrating TBI (HR, 4.60; 95% CI, 4.26-4.96; P <.001) were associated with CVD in adjusted models. In analyses of secondary outcomes, all severities of TBI were associated with the individual components of the composite outcome except penetrating TBI and CVD death. Conclusions and Relevance: Results of this cohort study suggest that US veterans with a TBI history were more likely to develop CVD compared with veterans without a TBI history. Given the relatively young age of the cohort, these results suggest that there may be an increased burden of CVD as these veterans age and develop other CVD risk factors. Future studies are needed to determine if the increased risk associated with TBI is modifiable..
UR - http://www.scopus.com/inward/record.url?scp=85137567148&partnerID=8YFLogxK
U2 - 10.1001/jamaneurol.2022.2682
DO - 10.1001/jamaneurol.2022.2682
M3 - Article
C2 - 36066882
AN - SCOPUS:85137567148
SN - 2168-6149
VL - 79
SP - 1122
EP - 1129
JO - JAMA Neurology
JF - JAMA Neurology
IS - 11
ER -