Framing diagnostic error: an epidemiological perspective.

Diagnostic error continues to challenge patient safety. This narrative review presents ways to improve epidemiological research into diagnostic error. Definitions of "diagnostic error" vary greatly between studies. Instead of developing a standardized definition, the authors recommend considering how the timing and accuracy of a diagnosis impact its accuracy and validity. Other important considerations include data source (e.g., administrative claims, malpractice claims, autopsies), social determinants of health, patient access to care, and bias.