{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,4]],"date-time":"2026-05-04T20:39:58Z","timestamp":1777927198319,"version":"3.51.4"},"reference-count":49,"publisher":"SAGE Publications","issue":"17","license":[{"start":{"date-parts":[[2021,8,13]],"date-time":"2021-08-13T00:00:00Z","timestamp":1628812800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Journal of Neurotrauma"],"published-print":{"date-parts":[[2021,9]]},"abstract":"<jats:p>\n                    Over the last decade, much research has been devoted to concussion among military personnel. Post-concussion symptoms after blast-related concussion are common, but it is unknown whether symptom reporting differs over time. This study's objective was to assess the relationship between time since injury and post-concussion symptom reporting. We conducted a retrospective review of existing records to identify service members who experienced blast-related concussion during deployment between 2007 and 2012 and who responded to a Post-Deployment Health Assessment (PDHA). The study population included 3690 military personnel grouped by time between injury and PDHA completion: 1-90 days (45.3%,\n                    <jats:italic toggle=\"yes\">n<\/jats:italic>\n                    \u2009=\u20091,673), 91-180 days (33.0%,\n                    <jats:italic toggle=\"yes\">n<\/jats:italic>\n                    \u2009=\u20091,216), or 181-365 days (21.7%,\n                    <jats:italic toggle=\"yes\">n<\/jats:italic>\n                    \u2009=\u2009801). Post-concussion symptoms assessed on the PDHA included headache, tinnitus, memory problems, concentration problems, difficulty making decisions, irritability, dizziness, and sleep problems. All post-concussion symptoms were higher for 91-180 days and 181-365 days after injury relative to 1-90 days, with the exception of dizziness. After adjustment for loss of consciousness, mental health comorbidity, and other covariates, the odds of reporting three or more post-concussion symptoms were significantly higher in those who completed the PDHA 91-180 days (odds ratio: 1.29; 95% confidence interval: 1.09-1.51) or 181-365 days after injury (odds ratio: 1.33; 95% confidence interval: 1.09-1.61), compared with the 1-90 days group. These findings suggest that refinements to in-theater medical care may be needed to reduce post-concussion symptom burden and improve the prospect of concussion recovery.\n                  <\/jats:p>","DOI":"10.1089\/neu.2020.7334","type":"journal-article","created":{"date-parts":[[2021,4,28]],"date-time":"2021-04-28T04:40:36Z","timestamp":1619584836000},"page":"2447-2453","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":8,"title":["Time Since Injury as a Factor in Post-Concussion Symptom Reporting among Military Service Members with Blast-Related Concussion"],"prefix":"10.1177","volume":"38","author":[{"given":"Andrew J.","family":"MacGregor","sequence":"first","affiliation":[{"name":"Medical Modeling, Simulation, and Mission Support Department, Naval Health Research Center, San Diego, California, USA."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kaeley B.","family":"Shannon","sequence":"additional","affiliation":[{"name":"Medical Modeling, Simulation, and Mission Support Department, Naval Health Research Center, San Diego, California, USA."},{"name":"Axiom Resource Management, Inc., San Diego, California, USA."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Amber L.","family":"Dougherty","sequence":"additional","affiliation":[{"name":"Medical Modeling, Simulation, and Mission Support Department, Naval Health Research Center, San Diego, California, USA."},{"name":"Leidos, Inc., San Diego, California, USA."}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","published-online":{"date-parts":[[2021,8,13]]},"reference":[{"key":"e_1_3_4_2_2","volume-title":"Prevalence and Epidemiology of Combat Blast Injuries From the Military Cohort 2001-2014","author":"Greer N.","year":"2016","unstructured":"Greer N., , Sayer N., , Kramer M., , Koeller E., , and Velasquez T. 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Haque A. Haran F.J. Cunningham C.A. Mehalick M.L. May T. Stuessi K. Walker P.B. and Norris J.N. Recovery from mild traumatic brain injury following uncomplicated mounted and dismounted blast: a natural history approach. Mil. Med. 183 e140\u2013e147.","DOI":"10.1093\/milmed\/usx036"},{"key":"e_1_3_4_23_2","unstructured":"MacGregor A.J. Dougherty A.L. Tang J.J. and Galarneau M.R. (2011 April). Trends in post-concussive symptom reporting following mild traumatic brain injury in Operation Iraqi Freedom. 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