Research Reports - Suicidal ideation after mild traumatic brain injury

Arch Suicide Res. 2016 Jun 16. [Epub ahead of print]

Bethune A(1), da Costa L(1,)(2), van Niftrik CH(3), Feinstein A(4).

OBJECTIVES: We aim to elucidate psychosocial and injury features contributing to
SI following concussion or mild traumatic brain injury (mTBI) and the time course
for its development.
METHODS: Between 1998 and 2012, a sample of 871 patients referred to a follow-up
clinic after concussion treatment in an urban tertiary care ED were consecutively
offered enrollment at 3 months post injury. Data from psychiatric and
social-demographic assessments were consecutively collected at two visits (3 and
6 months after injury) respectively. Chi-square and t-tests were performed to
identify associations between variables related with SI. Logistic regression
analysis was performed to identify factors independently associated.
RESULTS: During the enrolment period, 2296 patients with mTBI presented to the
ED. 871 adults completed psychiatric and social demographic clinic assessments at
3 months, and 500 returned at 6 months. Suicidal ideation was expressed by 6.3%
at 3 months and 8.2% at 6 months. Regression models showed SI independently
associated with: speaking English as a Second Language (ESL) and injury mechanism
(MVC passenger) at 3 and 6 months; and history of depression and marital status
at 3 months only.
CONCLUSIONS: SI is common 3 months after mTBI, and appears more at 6 month follow
up. These findings suggest earlier screening for predisposing factors and closer
monitoring of those at risk for suicidality. 

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