Traumatic Brain Injury / Adolescent / Employment / Humans / Female / Male / Brain injury / Clinical Sciences / Aged / Middle Aged / Outcomes Research / Adult / Public health systems and services research / Retrospective Studies / Chi Square Distribution / Logistic Models / Racial differences / Brain injuries / Recovery of Function / Male / Brain injury / Clinical Sciences / Aged / Middle Aged / Outcomes Research / Adult / Public health systems and services research / Retrospective Studies / Chi Square Distribution / Logistic Models / Racial differences / Brain injuries / Recovery of Function