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The impact of head injury mechanism on mental health symptoms in veterans: do number and type of exposures matter?

Maguen S, Madden E, Lau KM, Seal K. The impact of head injury mechanism on mental health symptoms in veterans: do number and type of exposures matter? Journal of traumatic stress. 2012 Feb 1; 25(1):3-9.

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Abstract:

This study examined the association between screening results for mental health problems and the number and type of head injuries in 1,082 Iraq and Afghanistan War veterans who received population-based screening for traumatic brain injury at a Veterans Administration health care facility. Nearly one third of all veterans reported multiple types of head injuries (median = 1 among those with any head injury, range = 1-6 types of head injury). Veterans reporting multiple head injury mechanisms had 6 times the odds of screening positive for posttraumatic stress disorder (PTSD), adjusted odds ratio (OR) = 6.15, 95% confidence interval (CI) [4.4, 8.7], p < .001, over 4 times the odds of screening positive for depression, adjusted OR = 4.09, 95% CI [2.8, 5.9], p < .001, and about twice the odds of screening positive for alcohol misuse, adjusted OR = 1.64, 95% CI [1.19, 2.3], p = .003, compared to those without head injuries. Veterans reporting a blast plus another head injury mechanism had higher odds of screening positive for all mental health outcomes than any other group (e.g., compared to no head injury group): PTSD, adjusted OR = 6.52, 95% CI [4.6, 9.3], p < .001; depression, adjusted OR = 4.42, 95% CI [3.0, 6.4], p < .001; alcohol misuse, adjusted OR = 1.59, 95% CI [1.14, 2.2], p = .006. Given their association with a variety of mental health outcomes, number and type of head injury mechanism should be considered as part of any postdeployment evaluation.





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