Researchers in South Carolina conducted a study to determine how preexisting health conditions and socioeconomic status affect the death rate of persons discharged from hospitals after being admitted for traumatic brain injury (TBI).
The study included the outcomes of over 33,000 discharged patients to determine a probability of death based on the survival time in days after injury and on the chronic disease or healthcare each patient inherited.
Compared to patients without preexisting conditions like heart disease, cancer, stroke, and diabetes - and to patients who received private healthcare instead of Medicare or lacked insurance - patients with these health concerns were much more likely to die during the course of the study follow-up period.
Selassie A W, Cao Y, et al. Accelerated Death Rate in Population-Based Cohort of Persons With Traumatic Brain Injury. The Journal of Head Trauma Rehabilitation. (July 2013).