Table 2.
No gold standard estimates of the sensitivity (Se) and specificity (Sp) with Bayesian 95% credibility intervals (BCI) for the ID.Vet Rift Valley Fever ELISA at a cut-off of 40 and the in house PRNT80 with a cut-off of 80 estimated separately for each age group.
| Parameter | Age class | Mean | 95% BCI |
|---|---|---|---|
| Se ID.Vet ELISA | Young | 0.906 | 0.712–0.997 |
| Adult | 0.941 | 0.817–0.998 | |
| Old | 0.857 | 0.655–0.992 | |
| Sp ID.Vet ELISA | Young | 0.992 | 0.977–1.000 |
| Adult | 0.990 | 0.973–1.000 | |
| Old | 0.979 | 0.944–0.999 | |
| Se PRNT80 | Young | 0.786 | 0.577–0.956 |
| Adult | 0.754 | 0.567–0.937 | |
| Old | 0.847 | 0.672–0.968 | |
| Sp PRNT80 | Young | 0.985 | 0.970–0.996 |
| Adult | 0.985 | 0.971–0.995 | |
| Old | 0.958 | 0.920–0.989 |