Butcher, I.

outcome study patient injury trial brain injury prognostic analysis model effect brain head injury impact treatment value score result ratio difference covariate impact database blood treatment effect table scale pressure misclassification characteristic sample size motor database number neurotrauma power sample odds ratios glasgow outcome scale center odds ratio pupil group approach admission motor score prognosis association blood pressure month odds model hypotension predictor category enrollment systolic blood pressure prognostic value mortality adjustment relationship randomized glasgow distribution enrollment criteria classification reduction ct characteristics criteria ct classification analyses split covariate adjustment hypoxia between-center differences marmarou factor point hospital design laboratory survey neurosurg