Journal Article
Study

Medication errors: how reliable are the severity ratings reported to the National Reporting and Learning System?

Williams SD, Ashcroft DM. International journal for quality in health care : journal of the International Society for Quality in Health Care. 2009;21:316-20.

Assessment of the severity of medication errors reported to the National Reporting and Learning System (the United Kingdom's voluntary incident reporting system) varied widely depending on whether the reporter was a nurse, pharmacy technician, pharmacist, or physician, and whether the reporter personally witnessed the error.