Number of medical errors reported to JQ Japan 2014-2023, by report type

Scope of events reported as medical adverse event according to the source:

(1) Apparent errors in treatment or management that resulted in the patient’s death or mental or physical disability, or required unexpected treatment, treatment to an unexpected extent, or other medical procedure.
(2) Unapparent errors in treatment or management that resulted in the patient’s death or mental or physical disability, or required unexpected treatment, treatment to an unexpected extent, or other medical procedure (including events possibly associated with treatment or management provided; limited to unexpected events).
(3) Other than those described in (1) and (2), information conducive to the prevention of medical adverse events and their recurrence at medical institutions.