Table 4 Sensitivity, specificity, negative predictive value, positive predictive value of MEM-MHT, ERT-MHT and correlation with OXA-48 gene positivity
|  |  | Sensitivity  % | Specificity  % | NPV  % | PPV  % | Correlation with OXA-48 gene positivity |
|---|---|---|---|---|---|---|
All OXA-48 positive isolates | MEM-MHT | 70.9 | 88.7 | 66.3 | 90.7 | p < 0.001 |
ERT-MHT | 70.6 | 87.5 | 66.3 | 89.5 | p < 0.001 | |
OXA-48 positive K. pneumoniae | MEM-MHT | 89.3 | 84.6 | 64.7 | 96.2 | p < 0.001 |
ERT-MHT | 92.7 | 92.9 | 76.5 | 98.1 | p < 0.001 | |
OXA-48 positive S. marcescens | MEM-MHT | 20 | 86.9 | 71.4 | 40 | p > 0.05 |
ERT-MHT | 16.7 | 85.2 | 82.1 | 20 | p > 0.05 | |
OXA-48 positive M. morganii | MEM-MHT | 37.5 | 100 | 64.3 | 100 | p > 0.05 |
ERT-MHT | 33.3 | 100 | 57.1 | 100 | p > 0.05 | |
OXA-48 positive P. mirabilis | MEM-MHT | 44.4 | 75 | 54.6 | 66.7 | p > 0.05 |
ERT-MHT | 40 | 71.4 | 45.5 | 66.7 | p > 0.05 | |
OXA-48 positive E. coli | MEM-MHT | 100 | 100 | 100 | 100 | p < 0.001 |
ERT-MHT | 80 | 100 | 60 | 100 | p < 0.05 | |
OXA-48 positive E. cloacae | MEM-MHT | 37.5 | 100 | 50 | 100 | p > 0.05 |
ERT-MHT | 37.5 | 100 | 50 | 100 | p > 0.05 | |
OXA-48 positive E. aerogenes | MEM-MHT | 71.43 | 100 | 60 | 100 | p > 0.05 |
ERT-MHT | 71.43 | 100 | 60 | 100 | p > 0.05 |