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Table 4 Agreement and errors of the direct method of AST for GPC after discrepancy analysis

From: Evaluation of direct inoculation of the BD PHOENIX system from positive BACTEC blood cultures for both Gram-positive cocci and Gram-negative rods

Antimicrobial agent

No. of tested strains

% categorical agreement

No. of minor errors (%)

No. of major errors (%)

No. of very major errors (%)

Amoxicillin/clavulanate

84

91.7

0.0

7 (8.3)

0

Ampicillin

84

94

0

5 (6.0)

0

Clindamycin

84

96.4

2 (2.4)

1 (1.2)

0

Erythromycin

84

86.9

8 (9.5)

2 (3.6)

0

Gentamicin

84

100

0

0

0

Linezolid

84

91.6

1 (1.2)

6 (7.2)

0

Moxifloxacin

84

100

0

0

0

Oxacillin

84

96.4

0

3 (3.6)

0

Penicillin

84

98.8

0

1 (1.2)

0

Rifampin

82

98.8

0

1 (1.2)

0

Tetracycline

84

97.6

1 (1.2)

1 (1.2)

0

Trimethoprim/Sulfamethoxazole

84

89.2

0

5 (6.0)

4 (4.8)

Vancomycin

84

98.8

0

1 (1.2)

0

Total

1090

95.4

12 (1.1)

34 (3.1)

4 (0.4)