U.S. military personnel who served in Iraq and Afghanistan and suffered "blast plus impact" concussive traumatic brain injury (TBI) were compared to military personnel without TBI who were evacuated for other medical reasons.
overall disability among the study participants recovering from concussive TBI was surprisingly high. The authors explore the possible factors related to differences in outcomes between the two groups in the article "Functional Status after Blast-Plus-Impact Complex Concussive Traumatic Brain Injury in Evacuated United States Military Personnel."