 |
|
Table 2. The odds ratio for infestation with B. decoloratus, at 95% confidence intervals (CI).
|
| Risk factor |
Level |
Odds ratio |
95% CI |
P value |
| AEZ |
Grazing system |
|
|
|
| Lowland |
Fenced |
– |
– |
0.05 |
| Lowland |
Free range |
0.25 |
.09–.68* |
|
| Lowland |
Tethered |
0.44 |
.08–2.42 |
|
| Lowland |
Zero grazing |
– |
– |
|
| Midland and upland |
Fenced |
1.17 |
.39–3.41 |
|
| Midland and upland |
Free range |
0.96 |
.23–3.94 |
|
| Midland |
Tethered |
0.1 |
.01–.89* |
|
| Midland |
Zero grazing |
0.05 |
.01–.17* |
|
| Upland |
Tethered |
1.16 |
.45–2.95 |
|
| Upland |
Zero grazing |
1 |
– |
|
| Age group (months) |
|
|
|
|
| 0–3 |
|
0.1 |
.01–.79* |
0.05 |
| 4–12 |
|
0.9 |
.47–1.72 |
|
| 13–18 |
|
0.78 |
.2–3.14 |
|
| >18 |
|
1 |
– |
|
|
|
* Low risk of infestation
|
|