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Neurology Emergencies

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Jeffrey J Perry, Ian G Stiell, Marco L A Sivilotti, Michael J Bullard, Corinne M Hohl, Jane Sutherland, Marcel Émond, Andrew Worster, Jacques S Lee, Duncan Mackey, Merril Pauls, Howard Lesiuk, Cheryl Symington, George A Wells
IMPORTANCE: Three clinical decision rules were previously derived to identify patients with headache requiring investigations to rule out subarachnoid hemorrhage. OBJECTIVE: To assess the accuracy, reliability, acceptability, and potential refinement (ie, to improve sensitivity or specificity) of these rules in a new cohort of patients with headache. DESIGN, SETTING, AND PATIENTS: Multicenter cohort study conducted at 10 university-affiliated Canadian tertiary care emergency departments from April 2006 to July 2010...
September 25, 2013: JAMA: the Journal of the American Medical Association
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