Research Reports - Life expectancy following inpatient rehabilitation for traumatic brain injury

J Neurotrauma. 2014 Jul 24

Harrison-Felix CL(1), Pretz CR, Hammond F, Cuthbert J, Bell J, Corrigan JD, Miller AC, Haarbauer-Krupa J

This study characterized life expectancy after traumatic brain injury (TBI). The
TBI Model Systems (TBIMS) National Database (NDB) was weighted to represent those
16 years of age and older completing inpatient rehabilitation for TBI in the
United States (US) between 2001 and 2010. Analyses included Standardized
Mortality Ratios (SMRs), Cox regression, and life expectancy. The US mortality
rates by age, sex, race, and cause of death for 2005 and 2010 were used for
comparison purposes. Results indicated a total of 1,325 deaths occurred in the
weighted cohort of 6,913 individuals. Individuals with TBI were 2.23 times more
likely to die than individuals of comparable age, sex, and race in the general
population, with a reduced average life expectancy of nine years. Independent
risk factors for death were: older age, male gender, less-than-high school
education, previously married at injury, not employed at injury, more recent year
of injury, fall-related TBI, not discharged home after rehabilitation, less
functional independence, and greater disability. Individuals with TBI were at
greatest risk of death due to seizures, accidental poisonings, sepsis, aspiration
pneumonia, respiratory, mental/behavioral or nervous system conditions and other
external causes of injury and poisoning compared to individuals in the general
population of similar age, gender, and race. This study confirms prior life
expectancy study findings, and provides evidence that the TBIMS NDB is
representative of the larger population of adults receiving inpatient
rehabilitation for TBI in the US. There is an increased risk of death for
individuals with TBI requiring inpatient rehabilitation.

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