This retrospective cohort study used root cause analysis (RCA) to examine safety reports from emergency departments at Veterans Health Administration hospitals over a two-year period. Of the 144 cases identified, the majority involved delays in care (26%), elopements (15%), suicide attempts and deaths (10%), inappropriate discharges (10%) and errors following procedures (10%). RCA revealed that primary contributory factors leading to adverse events were knowledge/educational deficits (11%) and policies/procedures that were either inadequate (11%) or lacking standardization (10%).

The authors used focus groups and interviews to develop a taxonomy of errors in inpatient psychiatry and explore underlying systems causes of the errors. Medication errors, diagnostic errors, and failure to prevent patient harm (such as suicide attempts) were among the common types of errors identified.