Table 3.
Continuous risk factors associated with brucellosis seropositivity among small ruminants from Duhok Province (Iraq) using a parallel interpretation of the Rose Bengal test (RBT) and indirect enzyme-linked immunosorbent assay (iELISA).
| Variable | Seropositive (Mean ± SD) | Seronegative (Mean ± SD) |
|---|---|---|
| Age (months) | 4.6 ± 1.7 | 3.5 ± 1.4 |
| Number of sheep on the farm | 403 ± 550 | 533 ± 504 |
| Number of goats on the farm | 124 ± 176 | 94 ± 139 |
| If mixed with other flocks while grazing—number of external flocks | 2 ± 1.7 | 2 ± 1.6 |
| Number of aborted sheep on farm during the preceding 12 months | 20 ± 32.5 | 20 ± 33.2 |
| Number of aborted goats on farm during the preceding 12 months | 16 ± 20.0 | 12 ± 20.7 |
| Number of agricultural workers on the farm | 1.3 ± 3.7 | 2 ± 4.1 |
| Amount of money spent on feed in the preceding 12 months (in 1000 Iraqi Dinars) | 70 ± 9.3 | 60 ± 8.8 |
| Amount of money spent on electricity in the preceding 12 months (in 1000 Iraqi Dinars) | 10 ± 1.9 | 16 ± 3 |
| Amount of money spent in flock on control of Brucella in the preceding 12 months (in 1000 Iraqi Dinars) | 23.7 ± 36.3 | 39.4 ± 63.3 |