Over-complete discrete wavelet transformation of the normal auditory brainstem response improves prediction of outcome following severe acute closed head injury

Wilson, Wayne J., Chapple, Jane A., Phillips, Kate M., Snell, Kylie T., Bradley, Andrew P. and Darnell, Ross (2006) Over-complete discrete wavelet transformation of the normal auditory brainstem response improves prediction of outcome following severe acute closed head injury. Audiology And Neurotology, 11 4: 249-258. doi:10.1159/000093111


Author Wilson, Wayne J.
Chapple, Jane A.
Phillips, Kate M.
Snell, Kylie T.
Bradley, Andrew P.
Darnell, Ross
Title Over-complete discrete wavelet transformation of the normal auditory brainstem response improves prediction of outcome following severe acute closed head injury
Journal name Audiology And Neurotology   Check publisher's open access policy
ISSN 1420-3030
Publication date 2006-06-01
Year available 2006
Sub-type Article (original research)
DOI 10.1159/000093111
Open Access Status
Volume 11
Issue 4
Start page 249
End page 258
Total pages 10
Place of publication Basel
Publisher Karger
Language eng
Subject C1
329900 Other Medical and Health Sciences
Abstract Previous research has shown that complex statistical analysis ( discriminant function analysis) of a 'normal' auditory brainstem response ( ABR) result can improve this measure's ability to predict subject outcome following severe acute closed head injury ( ACHI). We hypothesized that adding the ABR's time-frequency information to such an analysis would improve this predictive value even further. 'Normal' ABR results were sampled from 69 severe ACHI subjects ( 22 of whom died and 47 of whom lived) and their time-frequency information extracted using an over-complete discrete wavelet transformation ( OCDWT). A series of logistic regression analyses then showed correct predictions of death and survival as follows: ABR measures only 72 and 89% ( respectively), ABR OCDWT measures only 82 and 89% ( respectively), and ABR and ABR OCDWT measures combined 86 and 93% ( respectively). These results showed that the addition of time-frequency information can improve the ability of the 'normal' ABR result to predict outcome following severe ACHI. Copyright (C) 2006 S. Karger AG, Basel.
Keyword Neurosciences
Otorhinolaryngology
auditory brainstem response
over-complete discrete wavelet transformation
acute closed head injury
Time-frequency Analysis
Evoked-potentials
Comatose
Scale
Forms
Q-Index Code C1
Institutional Status UQ

 
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Created: Thu, 20 Sep 2007, 04:27:55 EST