Table 2.

Univariable analysis of the exposure variables relative to the animal seropositivity outcome

	Negative (N=381)	Positive (N=85)	OR (95% CI)	p value
Land use
Agricultural	117	30	1.262 (0.705 - 2.259)	0.432
Woodland and semi-natural	136	29	1.050 (0.587 - 1.878)	0.870
Urban	128	26	-	-
Herd size
≤5	122	30	2.762 (1.380 - 5.527)	0.003
6-30	113	42	4.174 (2.139 - 8.148)	<0.001
≥31	146	13	-	-
Cattle density
≤10	120	30	1.625 (0.876 - 3.014)	0.121
11-20	131	35	1.737 (0.953 - 3.166)	0.070
≥21	130	20	-	-
Adult/calf ratios
≤1.0	135	20	0.653 (0.348 - 1.224)	0.182
1.1-2.0	127	38	1.319 (0.759 - 2.293)	0.326
≥2.1	119	27	-	-
Age class
Juvenile	145	18	0.294 (0.159 - 0.541)	<0.001
Subadult	139	26	0.443 (0.254 - 0.771)	0.004
Adult	97	41	-	-
Reproductive problems
Yes	173	41	1.120 (0.700 - 1.794)	0.636
No	208	44	-	-
Southern vs northern
Southern	253	45	1.757 (1.092 - 2.828)	0.019
Northern	128	40	-	-
Eastern vs western
Eastern	128	18	0.531 (0.303 - 0.932)	0.026
Western	253	67	-	-