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A prior meta-analysis found that no important injuries were missed by cervical spine magnetic resonance imaging (MRI) in blunt trauma patients with altered mental status (NEJM JW Emerg Med Apr 2015 and Ann Intern Med 2015; 162:429). The same investigators now report the results of a cost-effectiveness analysis on this topic.
The analysis considered a hypothetical 40-year-old trauma patient with a normal cervical spine computed tomography (CT) scan and a Glasgow Coma Scale (GCS) score <13. Estimates of the likelihood and consequences of foreseeable outcomes were derived from the literature, and decision analytic techniques were used to calculate the costs and benefits of two follow-up strategies after normal CT findings: cervical spine MRI or…