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Barber, P.A., Darby, D.G., Desmond, P.M., Yang, Q., Gerraty, R.P., Jolley, D., Donnan, G.A., Tress, B.M. and Davis, S.M. (1998) Prediction of stroke outcome with echoplanar perfusion- and diffusion-weighted MRI. Neurology, 51(2), 418-426.

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• TITLE: Ridge penalized logistical and ordinal partial least squares regression for predicting stroke deficit from infarct topography

  AUTHORS: Jian Chen, Thanh G. Phan, David C. Reutens

  KEYWORDS: Ridge Penalized; Logistical PLS; Stroke

  JOURNAL NAME: Journal of Biomedical Science and Engineering, Vol.3 No.6, June 25, 2010

  ABSTRACT: Improving the ability to assess potential stroke deficit may aid the selection of patients most likely to benefit from acute stroke therapies. Methods based only on ‘at risk’ volumes or initial neurological condition do predict eventual outcome but not perfectly. Given the close relationship between anatomy and function in the brain, we propose the use of a modified version of partial least squares (PLS) regression to examine how well stroke outcome covary with infarct location. The modified version of PLS incorporates penalized regression and can handle either binary or ordinal data. This version is known as partial least squares with penalized logistic regression (PLS-PLR) and has been adapted from its original use for high-dimensional microarray data. We have adapted this algorithm for use in imaging data and demonstrate the use of this algorithm in a set of patients with aphasia (high level language disorder) following stroke.