TY  - JOUR
PY  - 2001//
TI  - An EEG severity index of traumatic brain injury
JO  - Journal of neuropsychiatry and clinical neurosciences
A1  - Thatcher, R. W.
A1  - North, D. M.
A1  - Curtin, R. T.
A1  - Walker, R. A.
A1  - Biver, C. J.
A1  - Gomez, J. F.
A1  - Salazar, Andres M.
SP  - 77
EP  - 87
VL  - 13
IS  - 1
N2  - EEG spectral analyses were conducted from 19 scalp locations for patients with mild (n=40), moderate (n=25), and severe (n=43) traumatic brain injury (TBI), 15 days to 4 years after injury. Severity of TBI was judged by emergency hospital admission records (Glasgow Coma Score and duration of coma and amnesia). Highest-loading EEG variables on each factor that differed significantly between severe and mild TBI by univariate t-test were entered into a multivariate discriminant analysis, yielding 16 variables. Discriminant analysis between mild and severe TBI groups showed classification accuracy of 96.39%, sensitivity 95.45%, and specificity 97.44%. The EEG discriminant score also measured intermediate severity in moderate TBI patients. Results were cross-validated in 503 VA patients. Significant correlations between EEG discriminant scores, emergency admission measures, and post-trauma neuropsychological test scores validated the discriminant function as an index of severity of injury and a classifier of the extremes of severity.<p /> <p>Language: en</p>
LA  - en
SN  - 0895-0172
UR  - http://dx.doi.org/
ID  - ref1
ER  -