Table 2.

Streptococci: overall agreement of AST results between the Phoenix system and the Etest method.

Antibiotic	Susceptibility (No.)			Essential agreement	Categorical agreement	Minor errors		Major errors	Very major errors
	S	I	R	%	%	No. (%)		No. (%)	No.
Penicillin	126	19	5	93.3	96.0	6	(4.0)	0	0
Erythromycin	95	0	55	88.6	100	0		0	0
Clindamycin	108	2	40	67.3	97.3	3	(2.0)	1 (0.9)	0
Levofloxacin	133	0	17	90.7	99.3	1	(0.7)	0	0
Chloramphenicol	139	0	11	97.3	99.3	1	(0.7)	0	0
Cefotaxime	149	0	1	98.0	99.3	1	(0.7)	0	0
Cefepime	145	4	1	100	99.3	1	(0.7)	0	0
Vancomycin	150	0	0	100	100	0		0	0
Total	1,045	25	130	91.9	98.8	13	(1.1)	1 (0.1)	0