Table 3.
Diagnostic performance of the sweeping method based on time for detection and agreement with the conventional method, histology examination, and polymerase chain reaction.
| Time | Sensitivity (%) | Specificity (%) | Accuracy (%) | PPV (%) | NPV (%) | Kappa valuea | ||
|---|---|---|---|---|---|---|---|---|
| Conventional | Histology | PCR | ||||||
|
≤ 5 min (n = 232) |
0.971 | 0.882 | 0.935 | 0.925 | 0.954 | 0.535 | 0.835 | 0.794 |
|
≤ 15 min (n = 254) |
0.975 | 0.872 | 0.937 | 0.929 | 0.954 | 0.492 | 0.844 | 0.781 |
|
≤ 30 min (n = 268) |
0.977 | 0.872 | 0.940 | 0.934 | 0.954 | 0.468 | 0.848 | 0.780 |
|
≤ 60 min (n = 279) |
0.978 | 0.872 | 0.943 | 0.938 | 0.954 | 0.470 | 0.851 | 0.785 |
PPV positive predictive value; NPV negative predictive value; PCR polymerase chain reaction.
aKappa value < 0.00, poor; 0.00–0.20, slight; 0.21–0.40, fair; 0.41–0.60, moderate; 0.61–0.80, substantial; 0.81–1.00, almost perfect.