TABLE 2.

MIC agreement and errors for antimicrobial agents between direct and standard method^a

Antimicrobial agent	No. of tests	MIC agreement			Error
		MIC unagreement	MIC agreement	% MIC agreement	Minor	Major	Very major
Amikacin	302	0	302	100.0	1	0	0
Amoxicillin-clavulanic acid	311	4	307	98.7	4	0	0
Ampicillin	312	2	310	99.4	2	1	0
Cefalotin	311	3	308	99.0	15	0	0
Cefepime	301	0	301	100.0	0	0	0
Cefotaxime	310	4	306	98.7	5	0	2
Cefoxitin	301	0	301	100.0	4	0	0
Cefpodoxime	301	4	297	98.7	1	0	0
Ceftazidime	311	2	309	99.4	1	0	1
Cefuroxime	310	4	306	98.7	17	0	0
Cefuroxime axetil	300	4	296	98.7	24	0	0
Ciprofloxacin	311	0	311	100.0	0	0	0
Gentamicin	312	3	309	99.0	2	0	0
Meropenem	311	0	311	100.0	0	0	0
Nitrofurantoin	312	3	309	99.0	30	0	0
Norfloxacin	312	2	310	99.4	5	0	0
Ofloxacin	311	0	311	100.0	1	0	0
Piperacillin	312	15	297	95.2	17	0	3
Piperacillin-tazobactam	312	3	309	99.0	3	0	0
Tobramycin	302	0	302	100.0	1	0	0
Trimethoprim-sulfamethoxazole	312	0	312	100.0	0	0	0
Total	6,477	53 (0.8)	6,424 (99.2)		133 (2.1)	1	6

^aValues in parentheses are percentages.