MALDI-TOF MS Results Conventional Methods Phoenix PCR
(N=2,872)1) (N=41) (N=35)
Match Mismatch Match Mismatch Match Mismatch
Enterobacteriaceae (n=1081) 1064 17 14 3 14 3
Micrococcaceae (n=407) 405 2 2 0 2 0
Streptococcaceae (n=448) 442 6 1 5 0 3
Nonfermenters (n=288) 280 8 6 2 5 1
Bacteria anaerobe (n=156) 155 1 0 1 0 1
Gram positive rods aerob (n=89) 86 3 3 0 3 0
Miscellaneous (n=163) 159 4 3 1 2 1
Fungi (n=240) 240 0 0 0 0 0
Total (n=2872)1) 2831 41 29 12 26 9
1) 28 additional isolates were excluded from the comparison, because it was not possible to compare their MALDI-TOF __results to identification results obtained with other methods.
Table 3: Comparison of MALDI TOF MS species identification with species identification by other methods. The results are summarized in accordance to various groups of microorganisms.