Measurement is essential for improving diagnosis and reducing diagnostic error: a report from the Institute of Medicine.

McGlynn EA, McDonald KM, Cassel CK. JAMA. 2015 Nov 16; [Epub ahead of print].

Measurement in patient safety is challenging and requires consensus to determine the presence of specific problems. In light of recommendations from the Improving Diagnosis in Health Care report, this commentary reviews five purposes for measuring diagnostic errors and describes how each which will require distinct strategies to generate data to better understand and track the incidence and impact of such errors.