Table 1Percentage of inpatient and outpatient events, stratified by harm and reported to the DoD Patient Safety Center Registry, October 2002 to September 2003, with comparison to the 2002 MEDMARXSM national database

InpatientOutpatient
Harm stratification*DoDNational DoDNational
Near miss 40.3%50.5%74.7%60.7%
Error, no harm 57.9%47.8%25.0%37.9%
Error, harm**1.8%1.7%0.3%1.4%
*

Based on National Coordinating Council for Medication Error Reporting and Prevention error categories. A near miss includes Categories A and B events; error, no harm includes Categories C and D events; and error, harm includes Categories E–I events.

2002 national MEDMARX data provided by U.S. Pharmacopeia, Center for Advancement in Patient Safety.

Near miss definition: Any process variation or error that could have resulted in harm to a patient, visitor, or staff, but through chance or timely intervention did not reach the individual.

§

No harm definition: An event that reached the patient but did not result in harm.

**

Harm definition: Impairment of the physical, emotional, or psychological function or the structure of the body and/or pain resulting therefrom.

From: Standardizing Medication Error Event Reporting in the U.S. Department of Defense

Cover of Advances in Patient Safety: From Research to Implementation (Volume 4: Programs, Tools, and Products)
Advances in Patient Safety: From Research to Implementation (Volume 4: Programs, Tools, and Products).
Henriksen K, Battles JB, Marks ES, et al., editors.

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