Figure 2. Primary Results Comparing Wrong-Patient Order Sessions in the Restricted vs Unrestricted Group.

^aIn the restricted group, configuration limited to 1 record open at a time.

^bIn the unrestricted group, configuration allowed up to 4 records open concurrently.

^cRandom-effects logistic regression models were constructed, using the order session as the unit of analysis and the clinician as the random intercept. The order session, a series of orders placed consecutively by a single clinician for a single patient, represents an independent opportunity for an error to occur. Wrong-patient order sessions were defined as order sessions that included at least 1 wrong-patient Retract-and-Reorder event. The intervention effect did not differ among subgroups defined by practice setting; P for interaction = .99.