Long-term life expectancy in severe traumatic brain injury: a systematic review.
Antonio DE Tanti, Stefania Bruni, Jacopo Bonavita and 4 others
PMID 39291953WHAT IT FOUND
Survivors of severe traumatic brain injury face significantly reduced life expectancy compared to the general population.
The risk of death remains elevated for years, particularly for those with limited mobility or self-care abilities, though independent walking improves survival prospects.
Key findings
01Severe TBI survivors have a standardized mortality ratio of 3.19 two years post-discharge, with elevated risk persisting for at least 8 years.
02Life expectancy is heavily influenced by functional status; non-ambulatory individuals may have life expectancies reduced by up to 27 years, whereas those who can walk independently near general population levels.
03Mortality risk is notably higher in the first 1-2 months post-injury and remains elevated up to 15 months, with age and injury severity being key predictors.
STILL TO COME
How it was doneWhat they foundWhat it means for PTsWhat it means for OTsWhat it means for SLPs
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What it does not show
Most included studies were retrospective and observational, raising concerns about potential bias and selection bias. The majority of data originated from North America, limiting generalizability to other healthcare systems. There was significant variability in study designs, inclusion criteria, and follow-up periods (0.5 to 25 years). Few studies adequately controlled for confounding factors like pre-injury health status and comorbidities. The review excluded veterans, who may have distinct risk profiles and healthcare access.
Declared interests
The authors certify that there is no conflict of interest with any financial organization regarding the material discussed in the manuscript.
The easy way to misread this
Do not interpret the reduced life expectancy as a direct result of the acute injury alone. The review notes that pre-injury health, socioeconomic factors, and post-injury care quality significantly influence survival, and the data is largely observational and may not account for all confounders.