Breed | Total number of animals | Number of sheep developing clinical disease | Occurrence (%) | Relative risk | (95% CI) | p value |
---|---|---|---|---|---|---|
Merino | 36 | 15 | 42 | 1.00a | Â | Â |
White Suffolk × Merino | 36 | 13 | 36 | 0.87 | (0.48–1.55) | 0.63 |
Border Leicester | 34 | 4 | 12 | 0.28 | (0.10–0.77) | 0.01 |
Poll Dorset | 36 | 4 | 11 | 0.27 | (0.10–0.73) | 0.01 |