Medication errors: how reliable are the severity ratings reported to the National Reporting and Learning System?
Williams SD, Ashcroft DM. Medication errors: how reliable are the severity ratings reported to the national reporting and learning system? Int J Qual Health Care. 2009;21(5):316-20. doi:10.1093/intqhc/mzp034.
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.