Table 1.
Sensitivities and specificities of the five methods utilized for S. aureus detection in ETA samples compared to the extended gold standard
| Extended gold standard* | Sensitivity (%) | Specify (%) | |||
|---|---|---|---|---|---|
| + | – | (95% C1) | (95% C1) | ||
| GeneXpert | + | 41 | 0 | 100 | 100 |
| – | 0 | 38 | |||
| Q-culture | + | 41 | 2 | 100 | 94.74 |
| – | 0 | 36 | (82.25–99.36) | ||
| Enrichment | + | 41 | 3 | 100 | 92.11 |
| – | 0 | 35 | (78.62–98.34) | ||
| qPCR | + | 41 | 18 | 100 | 52.63 |
| – | 0 | 20 | (35.82–69.02) | ||
| SQ-culture | + | 39 | 0 | 95.12 | 100 |
| – | 2 | 38 | (83.47–99.40) | ||
*S. aureus detected by SQ-culture plus two samples that showed S. aureus presence by the other four methods but not by standard culture