Research Reports - Lifetime prevalence of traumatic brain injury in a demographically diverse community sample

Brain Inj. 2017 Mar 22:1-4. doi: 10.1080/02699052.2017.1283057. [Epub ahead of

Kisser J(1), Waldstein SR(1), Evans MK(2), Zonderman AB(3).

BACKGROUND: Although incidence rates are well documented for traumatic brain
injury, lifetime prevalence in a demographically diverse sample is unknown. We
examined the prevalence of self-reported traumatic brain injury (TBI) in a
demographically diverse sample.
METHODS: History of TBI was examined in 2881 African-Americans and Whites in the
Healthy Aging in Neighborhoods of Diversity across the Life Span (HANDLS) study-a
community-based, epidemiological investigation of urban-dwelling adults. Logistic
regression analyses examined the odds of TBI as a function of sex, race, poverty
status, age quintile and their interactions.
RESULTS: A significant 3-way interaction was noted amongst race, poverty status
and age (odds ratio (OR) = 1.57, 95% confidence interval (CI) 1.07-2.31, p =
0.021). Amongst Whites living in poverty, younger (30-36 years of age)
individuals had greater odds of TBI than older (58-64 years of age) individuals,
whereas older African-Americans living in poverty had greater odds of TBI.
Additionally, a main effect of sex (OR = 2.36, 95% CI 1.85-3.03, p < 0.001)
indicated that men had greater odds of TBI.
CONCLUSIONS: History of TBI is most prevalent in men, older African-Americans in
poverty, and younger Whites in poverty. Preventive measures targeting relevant
TBI risk factors in these populations are warranted. 

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