JAMA
Leila Agha, Jonathan Skinner, David Chan
The US health care system experiences wide variation in diagnosis rates forcommonconditions,muchof which is drivenby differences indiagnostic practice rather than byunderlyingpatient health.1 Diagnosis-related errors are common, and a report from 2014 estimated that 12 million patientsmayexperienceanoutpatient diagnostic error each year.2 To improve health outcomes and reduce unnecessaryspending,theUShealthsystemshouldmove toward greater efficiency in medical diagnosis.