Table 1.
Parameter | Types of antigens | |||||
---|---|---|---|---|---|---|
L | ESP | AS | ||||
+ve | −ve | +ve | −ve | +ve | −ve | |
NIS sera | 10/10 | 0/10 | 6/10 | 4/10 | 5/10 | 5/10 |
NNIS Sera | 8/10 | 2/10 | 7/10 | 3/10 | 2/10 | 8/10 |
Random Sera | 276/300 | 24/300 | 225/300 | 75/300 | 107/300 | 193/300 |
Total | 294/320 | 26/320 | 238/320 | 82/320 | 114/320 | 206/320 |
Sensitivity (%) | 55.55 | 46.15 | 71.4 | |||
Specificity (%) | 100 | 42.85 | 61.5 | |||
Negative predictive value (%) | 20 | 30 | 80 | |||
Positive predictive value (%) | 100 | 60 | 50 | |||
Apparent prevalence (%) | 92 | 75 | 35.6 |
NIS Naturally infected sera, NNIS Naturally non infected sera, L larval of H. contortus antigen, ESP excretory secretory product of H. contortus antigen, AS adult somatic of H. contortus antigen