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Table 3 Summary of the results on CRE obtained with automated methods compared to the results with reference method

From: Evaluation of automated systems for aminoglycosides and fluoroquinolones susceptibility testing for Carbapenem-resistant Enterobacteriaceae

Antibiotics System (concns in mg/l) % agreement in clinical categories % essential agreement No. of errors of different types (%)
Very major Major Minor
CIP WalkAway (0.12, 1, 2) 76.0 81.3 2 (0.2) 4 (0.4) 4 (0.4)
BD Phoenix (0.12, 0.25,0.5, 1,2) 80.0 88.0 2 (0.2) 1 (0.1) 4 (0.4)
Vitek-2 (0.25, 0.5,1, 2, 4) 85.4 84.0 3 (0.3) 2 (0.2) 7 (0.8)
LEV Walkaway (4, 8) 78.7 86.7 2 (0.2) 2 (0.2) 3 (0.3)
BD Phoenix (2, 4, 8) 77.3 84.0 1 (0.1) 2 (0.2) 4 (0.4)
Vitek-2 (1, 2,4, 8, 16) 81.3 81.3 3 (0.3) 3 (0.3) 7 (0.8)
GEN Walkaway (4, 8) 86.7 89.3 5 (0.6) 1 (0.1) 2 (0.2)
BD Phoenix (2, 4, 8) 90.7 90.7 3 (0.3) 2 (0.2) 3 (0.3)
Vitek-2 (1, 2,4, 8, 16) 89.3 90.7 3 (0.3) 2 (0.2) 3 (0.3)
AMK Walkaway (8, 16, 32) 92.0 94.7 1 (0.1) 1 (0.1) 0
BD Phoenix (8, 16, 32) 90.7 89.3 1 (0.1) 1 (0.1) 1 (0.1)
Vitek-2 (8, 16, 32) 88.0 84.0 2 (0.2) 1 (0.1) 1 (0.1)