Table 2 Sensitivity and specificity at different cut-off values of antibody responses against rSvSXP expressed as percent of a positive control (PP), using two sets of horses: A: all horses ( n =102); B: horses 7Â months or older ( n =86)
From: SvSXP: a Strongylus vulgaris antigen with potential for prepatent diagnosis
Data set | A | B | ||
|---|---|---|---|---|
PP cut-off | Se$ | Sp$ | Se | Sp |
5 | 0.77 | 0.67 | 0.78 | 0.54 |
10 | 0.70 | 0.83 | 0.71 | 0.75 |
15 | 0.64 | 0.88 | 0.66 | 0.82 |
20 | 0.53 | 0.88 | 0.55 | 0.82 |
25 | 0.48 | 0.90 | 0.50 | 0.86 |
30 | 0.42 | 0.98 | 0.43 | 0.96 |
40 | 0.37 | 1 | 0.38 | 1 |
50 | 0.32 | 1 | 0.33 | 1 |
60 | 0.27 | 1 | 0.28 | 1 |
70 | 0.22 | 1 | 0.22 | 1 |
80 | 0.17 | 1 | 0.17 | 1 |
90 | 0.12 | 1 | 0.12 | 1 |
100 | 0.08 | 1 | 0.09 | 1 |
>100 | 0.05 | 1 | 0.02 | 1 |
AUC$ | 0.820 | Â | 0.783 | Â |