TABLE 5.
Flock-level comparison of clinical diagnosis and the elastase test using 469 D. nodosus isolates collected from 38 Australian sheep flocksa
| Clinical diagnosis | No. of flocks with a laboratory diagnosis (elastase test) of:b |
||
|---|---|---|---|
| Benign | Virulent | Total | |
| Benign | 11 | 3 | 14 |
| Virulent | 0 | 24 | 24 |
| Total | 11 | 27 | 38 |
a
Lesion swabs were not collected for microbiological culture from flocks 39 and 40. McNemar's χ2 = 3.0, P = 0.0833; kappa statistic = 0.822 (95% CI, 0.633–1.000), DSe = 100% (95% CI, 85.8–100%), DSp = 78.6% (95% CI, 49.2–95.3%).
b
Benign, no D. nodosus isolates were elastase positive at ≤12 days; virulent, ≥1 D. nodosus isolate was elastase positive at ≤12 days.