Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Online monitoring of surgical performance with RA CUSUM charts is displayed for three different scenarios. Scenario A (left panel) correctly signals a performance deterioration. Scenario B (middle panel) incorrectly signals performance deterioration. In scenario C (right panel), an actual change in performance is not detected.
