TABLE 1.

EA and CA of AST compared to the reference method

CLSI group	Antimicrobial agent	% Agreement
		Automated AST				Manual AST
		Phoenix		Vitek 2		MicroScan		Etest
		EA	CA	EA	CA	EA	CA	EA	CA
A	Penicillin	90.7	95.5	91.8	94.2	95.8	98.7	96.1	97.7
	Erythromycin	92.0	99.7	94.2	97.3	96.8	99.7	97.1	100
	T/S	92.6	98.1	92.4	97.9	96.1	97.7	96.1	98.4
B	Cefepime	95.5	99.7	NAa	NA	99.7	99.7	NA	NA
	Cefotaxime	94.5	100	97.9	100	99.0	100	NA	NA
	Ceftriaxone	97.1	99.7	96.9	100	99.7	99.7	100	100
	Clindamycin	90.4	100	NA	NA	98.4	99.4	95.5	100
	Levofloxacin	96.5	100	94.8	100	100.0	100	100	100
	Meropenem	94.2	98.4	NA	NA	98.7	99.4	98.4	99.7
	Tetracycline	95.5	99.4	93.1	98.6	99.4	99.7	NA	NA
	Vancomycin	100	100	98.3	100	100	100	100	100
C	Linezolid	98.4	100	95.9	100	100	100	100	100
O	Gatifloxacin	100	100	NA	NA	100	100	NA	NA

^aNA, not applicable.