• Michael L Alosco, Mihaela Aslan, Mengtian Du, John Ko, Laura Grande, Susan P Proctor, John Concato, and Jennifer J Vasterling.
• Psychology Service, VA Boston Healthcare System, Boston, Massachusetts (Dr Alosco and Drs Grande and Vasterling); Clinical Epidemiology Research Center, VA Connecticut Healthcare System, West Haven (Drs Aslan and Concato and Mr Ko); Department of Medicine, Yale University School of Medicine, New Haven, Connecticut (Drs Aslan and Concato and Mr Ko); Department of Public Health, Yale Graduate School of Arts and Sciences, New Haven, Connecticut (Mr Du); Department of Psychiatry, Boston University School of Medicine, Boston, Massachusetts (Drs Grande and Vasterling); US Army Research Institute of Environmental Medicine, Natick, Massachusetts (Dr Proctor); Research Service, VA Boston Healthcare System, Boston, Massachusetts (Dr Proctor); Department of Environmental Health, Boston University School of Public Health, Boston, Massachusetts (Dr Proctor); and National Center for PTSD, VA Boston Healthcare System, Boston, Massachusetts (Dr Vasterling).
• J Head Trauma Rehabil. 2016 Sep 1; 31 (5): 360-8.

ObjectiveTo examine the temporal consistency of self-reported deployment-related traumatic brain injury (TBI) and its association with posttraumatic stress disorder (PTSD) symptom severity.SettingIn-person interviews at US Army installations (postdeployment); phone interviews (long-term follow-up).ParticipantsA total of 378 US Army soldiers and veterans deployed to Iraq; 14.3% (n = 54) reported TBI with loss of consciousness during an index deployment.DesignParticipants were evaluated after returning from deployment and again 5 to 9 years later.Main MeasuresTemporal consistency of TBI endorsement based on TBI screening interviews; PTSD Checklist, Civilian Version.ResultsThe concordance of deployment-related TBI endorsement from the postdeployment to long-term follow-up assessment was moderate (κ = 0.53). Of the 54 participants reporting (predominantly mild) TBI occurring during an index deployment, 32 endorsed TBI inconsistently over time. More severe PTSD symptoms at postdeployment assessment were independently associated with discordant reporting (P = .0004); each 10-point increase in PCL scores increasing odds of discordance by 69% (odds ratio = 1.69; 95% confidence interval, 1.26-2.26).ConclusionsDeployment-related TBI may not be reported reliably over time, particularly among war-zone veterans with greater PTSD symptoms. Results of screening evaluations for TBI history should be viewed with caution in the context of PTSD symptom history.

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