Table 4.

Percentage of Unknown Codes by Report Type

Completed Confidential ReportsAll Confidential Reports
Insufficient Information to Code (Unknown)Anonymous Reports %%PValue%PValue
NS = not significant.
* Based on 79 anonymous, 198 completed confidential, and 222 total (intention-to-treat) confidential event reports that had a system issue code. Unknown in this instance means insufficient information to code the specifics of the system issue.
Participants26.7911.11<.000114.79.0003
Participant contribution16.278.77.007712.03NS
Setting of event0.961.46NS2.26NS
Clinical intent8.137.89NS9.77NS
Cause (latent error)19.6212.57.025615.04NS
Patient outcome24.4021.35NS25.06NS
Intervention29.6121.64.035928.07NS
Event discoverer18.665.85<.000111.53.0160
System issue*44.3023.23.000525.23.0015
Any unknown66.9949.71<.000155.39.0057
>1 unknown39.7123.39<.000130.58.0236