Table 1.
ID performance of AXDX versus MALDI-TOF MS and VERIGENE® system
| Microbe | PPAa | NPAb |
|---|---|---|
| Escherichia coli | 64/64 (100%) | 83/83 (100%) |
| Klebsiella spp. | 32/32 (100%) | 115/116 (99.1%) |
| Enterobacter spp. | 16/19 (84.2%) | 130/130 (100%) |
| Proteus spp. | 4/5 (80%) | 144/144 (100%) |
| Citrobacter spp. | 4/5 (80%) | 144/144 (100%) |
| Serratia marcescens | 2/2 (100%) | 147/147 (100%) |
| Acinetobacter baumannii | 4/4 (100%) | 145/145 (100%) |
| P. aeruginosa | 16/17 (94.1%) | 131/131 (100%) |
| Total | 142/148 (95.9%) | 1039/1040 (99.9%) |
a
One indeterminate result (E. coli) was excluded from PPA calculation.
b
Three indeterminate results (one each for E. coli, Klebsiella spp. and P. aeruginosa) were excluded from NPA calculation.