Table 3.
Comparison of ecological isolate identification using Vitek-2 and molecular techniques.
| Vitek 2 system | Molecular technique | Total | |
|---|---|---|---|
| A. baumannii | A. baumanii complex | ||
| A. baumannii | 0 | 2 | 2 |
| A. baumannii complex | 1 | 4 | 5 |
| Total | 1 | 6 | 7 |
| Statistic | for A. baumannii | for A. baumannii complex | - |
| Kappa agreement | -0.24 † | -0.24 † | - |
| Sensitivity % | 66.67 | 0.00 | - |
| Specificity % | 0.00 | 66.67 | - |
| PPV % | 80.00 | 0.00 | - |
| NPV % | 0.00 | 80.00 | - |
| Accuracy % | 57.14 | 57.14 | - |
| p-value | 1.000 Mc NS | - | |
†
– No agreement; Mc – McNemar test; NS – not significant; PPV – positive predictive value; NPV – negative value NPV; p – p-value.