Research Reports - Prevalence of traumatic brain injury in intimate partner violence offenders compared to the general population: A meta-analysis

Trauma Violence Abuse. 2012 Mar 30. [Epub ahead of print]

Farrer TJ, Frost RB, Hedges DW.

Intimate partner violence (IPV) is widespread. Several risk factors are
associated with IPV perpetuation, including alcohol use and educational level.
The aggression and violence associated with traumatic brain injury (TBI) suggest
that brain trauma may also be a risk factor for IPV. To examine the association
between TBI and IPV, the authors conducted a meta-analysis of peer-reviewed
published studies reporting the prevalence of TBI in IPV perpetrators. The
authors compared the frequency of TBI among IPV perpetuators to estimates of TBI
in the general population using a single-sample test of proportions. Six studies
containing a total of 222 subjects met inclusion criteria. Fifty-three percent
(119) of the IPV perpetuators had a history of TBI, a prevalence significantly
higher (p < .0001) than estimates of TBI in the general population. The
prevalence of TBI among perpetuators of IPV appears significantly higher than the
prevalence of TBI in the general population. To the extent that this association
is causal, TBI may be a risk factor for interpersonal violence, although
comparatively few source studies, lack of standardized information about TBI
severity, and the inability to investigate potential confounding variables
necessarily limit this conclusion.

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