Table 2.

Characteristics of three sets of explicit criteria for PIM use.

	Beers Criteria	PIM-Taiwan criteria	PRISCUS criteria
Year established	2015	2012	2010
Country	USA	Taiwan	Germany
No. of statements	36	24	15
No. of medications	151	84	83
Patients exposed to ≥1 PIM, n (%)	199,882 (63.7)	132,186 (42.1)	101,646 (32.4)
No. of PIMs per patient (mean ± SD)	1 ± 1.5	0.6 ± 1.2	0.5 ± 1.1
Visits with ≥1 PIM, n (%)	309,800 (53.4)	186,673 (32.2)	141,576 (24.4)
No. of PIMs per visit (mean ± SD)	0.9 ± 1.1	0.4 ± 0.7	0.3 ± 0.7

PIM: potentially inappropriate medication.