Table 3.

Results of randomized controlled trial evaluating two interventions designed to reduce wrong-patient electronic orders

	Control	ID-verify alert*	ID-reentry function†
No of orders	n=1 173 693	n=1 038 516	n=1 069 335
No of order sessions	n=316 981	n=293 621	n=291 174
Rates of retract-and-reorder sessions per 1000 order sessions	1.5	1.2	0.9
OR (95% CI)		0.84 (0.72 to 0.98)	0.60 (0.50 to 0.71)
Percentage reduction compared with control (p value)		16% (p=0.03)	41% (p<0.001)
Session ordering times
Mean additional single session ordering time		0.5 s	6.6 s

^*ID-verify alert required a single click confirmation of the patient's name, gender, and age.

^†ID-reentry function required the provider accurately to reenter the patient's initials, gender, and age into a data field.