Table 1. Sensitivity and specificity of OmpA- and FliC-ELISA.
| ELISA | Cutoff index | Sensitivity (True positive rate) | False negative rate | Flase positive rate | Specificity (True negative rate) |
|---|---|---|---|---|---|
| OmpA-ELISA | Mean normal values plus 2 SD | 100% (10/10) | 0% (0/10) | 5% (1/20) | 95% (19/20) |
| Mean normal values plus 3 SD | 100% (10/10) | 0% (0/10) | 0% (0/20) | 100% (20/20) | |
| FliC-ELISA | Mean normal values plus 2 SD | 90% (9/10) | 10% (1/10) | 5% (1/20) | 95% (19/20) |
| Mean normal values plus 3 SD | 90% (9/10) | 10% (1/10) | 0% (0/20) | 100% (20/20) | |
| Crude antigen-ELISA | Mean normal values plus 2 SD | 100% (10/10) | 0% (0/10) | 5% (1/20) | 95% (19/20) |
| Mean normal values plus 3 SD | 100% (10/10) | 0% (0/10) | 0% (0/20) | 100% (20/20) |
SD, standard deviation.