Table 3.

Accept and Override Rates for Interruptive Alerts

		No. (%) of Alerts Accepted*
Contraindication	No.	No. (%) of Orders Canceled‡	No. (%) of Orders Modified§	Total No. (%) of Alerts Accepted	No. (%) of Alerts Overridden†
Duplicate class (Level 2 only)	3,875	681 (18)	2,284 (59)	2,965 (77)	910 (23)
Drug-drug	1,078	254 (24)	197 (18)	451 (42)	627 (58)
Level 1	13	4 (31)	9 (69)	13 (100)	0 (0)
Level 2	1,065	250 (23)	188 (18)	438 (41)	627 (59)
Drug-lab (Level 2 only)	92	37 (40)	0 (0)	37 (40)	55 (60)
Drug-disease (Level 2 only)	19	9 (47)	1 (5)	10 (53)	9 (47)
Drug-pregnancy	118	12 (10)	0 (0)	12 (10)	106 (90)
Level 1	16	2 (13)	0 (0)	2 (13)	14 (88)
Level 2	102	10 (10)	0 (0)	10 (10)	92 (90)
Total	5,182	993 (19)	2,482 (48)	3,475 (67)	1,707 (33)

^*Accepted alert: clinician canceled or modified order.

^†Overridden alert: clinician chose to continue with prescription with an override reason that would not eliminate the drug contraindication.

^‡Canceled order: clinician aborted the attempted prescription.

^§Modified order: clinician indicated override reason that would eliminate the drug contraindication.