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Objective
The aims of the present study were to derive and validate a clinical decision rule (CDR) to rule out the need for computed tomography of the brain (CTB) in non‐traumatic patients who present to the ED.
Methods
This is a retrospective review of non‐traumatic patients who presented to the EDs in two urban hospitals and received CTB from January 2014 to December 2016. Data from one hospital...