Table 1.

Comparison of the bioMérieux EasyQ KPC with a routine, phenotypic method of KPC detection

EasyQ KPCa	No. of specimens with routine method result			% (95 CI)b
	Positive	Negative	Total	Sensitivity	Specificity	PPV	NPV
All specimens				93.3 (77.9–99.2)	99.0 (98.0–99.6)	77.8 (60.9–89.9)	99.7 (99.1–100)
Positive	28	8	36
Negative	2	768	770
Total	30	776	806
Stools				90.0 (55.5–99.8)	98.3 (95.1–99.7)	75.0 (42.8–94.5)	99.4 (96.9–100.0)
Positive	9	3	12
Negative	1	174	175
Total	10	177	187
Swabs				95.0 (75.1–99.9)	99.2 (98.1–99.7)	79.2 (57.9–92.9)	99.8 (99.1–100.0)
Positive	19	5	24
Negative	1	594	595
Total	20	599	619

^aFinal EasyQ result, after retests to resolve invalid results.

^bCI, confidence interval.