|
Characteristics
|
ELISA
|
OR
|
95% CI
|
P value
|
Overall P value
|
|---|
|
Negative, n (%)
|
Positive, n (%)
|
|---|
|
Size of property
|
0.167
|
|
Small
|
122 (35.9)
|
60 (28.2)
|
Reference
| | |
|
Medium
|
84 (24.7)
|
76 (35.7)
|
1.84
|
1.19–2.85
|
0.00642
| |
|
Large
|
134 (39.4)
|
77 (36.2)
|
1.17
|
0.77–1.78
|
0.467
| |
|
Cattle type
|
0.00723
|
|
Beef
|
49 (14.4)
|
14 (6.57)
|
Reference
| | |
|
Dairy
|
291 (85.6)
|
199 (93.43)
|
2.37
|
0.15–2.02
|
0.00398
| |
|
Distance between farmhouse and urban area
|
0.00106
|
|
≤ 5 km
|
46 (13.5)
|
53 (24.9)
|
Reference
| | |
|
> 5 km
|
294 (86.5)
|
160 (75.1)
|
0.47
|
0.30–0.73
|
0.000863
| |
|
Cattle raising system
|
0.00027
|
|
Extensive
|
18 (5.29)
|
26 (12.2)
|
Reference
| | |
|
Semi-extensive
|
272 (80.0)
|
174 (81.7)
|
0.44
|
0.23–0.83
|
0.0114
| |
|
Feedlot
|
50 (14.7)
|
13 (6.1)
|
0.18
|
0.08–0.43
|
0.0000619
| |
|
Dogs on farm
|
0.000732
|
|
No
|
55 (16.2)
|
13 (6.1)
|
Reference
| | |
|
Yes
|
285 (83.8)
|
200 (93.9)
|
2.94
|
1.61–5.77
|
0.000296
| |
|
Cats on farm
|
0.000626
|
|
No
|
141 (41.5)
|
57 (26.8)
|
Reference
| | |
|
Yes
|
199 (58.5)
|
156 (73.2)
|
1.93
|
1.34–2.82
|
0.000417
| |
|
Dogs and cats on farm
|
0.000000424
|
|
No
|
166 (48.8)
|
57 (26.8)
|
Reference
| | |
|
Yes
|
174 (51.2)
|
156 73.2)
|
2.60
|
1.80–3.79
|
0.000000210
| |
- CI, Confidence interval; OR, odds ratio
