Importance Longer-term mortality in individuals who have survived a traumatic brain injury (TBI) is not known. Objectives To examine the relationship between TBI and premature mortality, particularly by external causes, and determine the role of psychiatric comorbidity. Design, Setting, and Patients We studied all persons born in 1954 or later in Sweden who received inpatient and outpatient International Classification of Diseases -based diagnoses of TBI from 1969 to 2009 (n?=?218?300)

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