Table 3. The potential and actual risk for patient harm of the identified DRP.

DRP, total number	Control		Intervention
	Identified (n = 419)	Unsolved (%*) (n = 303)	Identified (n = 396)	Unsolved (%*) (n = 50)
little or no potential for harm	107	93 (83.9)	99	17 (17.2)
potential ADE a	252	182 (72.2)	231	28 (12.1)
preventable ADE b	15	12 (80.0)	12	2 (16.7)
Non-preventable ADE c	45	16 (35.6)	54	3 (5.6)

DRP, Drug-Related Problems; ADE, Adverse Drug Events

*of identified numbers.

^aan error that had the potential for patient harm but did not contribute to patient harm during the study period

^bpatient harm occurred and was associated with a medication error

^cpatient harm occurred but was not associated with a medication error.