Table 2.
Sensitivity and specificity of microscopical methods compared to 100% sensitivity and specificity of PCR-RFLP for detection of A. marginale in carrier cattle.
| Method | No. of samples examined | No. of positives detected | Sensitivitya(%) | Specificityb(%) |
|---|---|---|---|---|
| PCR-RFLP | 150 | 58 | 100 | 100 |
| Microscopy(50 fields) | 150 | 16 | 25.8 | 99 |
| Microscopy(100 fields) | 150 | 75 | 91.4 | 76.1 |
a
Calculated as follows: [number of true positives/(number of true positives + number of false negatives)] × 100.
b
Calculated as follows: [number of true negatives/(number of true negatives + number of false positives)]× 100.