A four year longitudinal sero-epidemiology study of Neospora caninumin adult cattle from 114 cattle herds in south west England: Associations with age, herd and dam-offspring pairs

Table 3 Univariate analysis of the fixed effects associated with N. caninum antibody S/P ratio, (Dataset B – 26,437 samples, 13,942 cattle, 114 herds, only cattle ≥ 2 years old for regular visits in the 4-year study period).

		All data			Cattle with date of birth omitted data
Variable	Category	Coef	SE^b	P value	Coef	SE^b	P value
Triplet code^a	Reactive
	Proactive	-0.122	0.051	0.02	-0.084	0.049	0.09
	Survey	-0.097	0.051	0.06	-0.074	0.049	0.13
Restocked	No
	Yes	-0.043	0.052	0.41	-0.026	0.050	0.60
Farm location	Area A
	Area B	-0.153	0.045	< 0.01	-0.136	0.043	< 0.01
	Area C	-0.086	0.076	0.26	-0.035	0.074	0.64
Log (herd size)		-0.085	0.059	0.15	-0.079	0.059	0.18
Cattle sex	Female
	Male	-0.075	0.052	0.15	-0.065	0.056	0.25
Replacement cattle	Homebred
	Purchased	0.078	0.018	< 0.01	0.078	0.018	< 0.01
Mean herd seroprevalence	< 10%
	≥ 10%	0.294	0.031	< 0.01	0.274	0.030	< 0.01
Age (years)	2
	3	0.022	0.014	< 0.01	0.021	0.014	0.13
	4	0.047	0.014	< 0.01	0.045	0.014	< 0.01
	5	0.065	0.015	< 0.01	0.063	0.015	< 0.01
	6	0.083	0.016	< 0.01	0.077	0.016	< 0.01
	7	0.092	0.017	< 0.01	0.080	0.018	< 0.01
	8	0.100	0.019	< 0.01	0.079	0.021	< 0.01
	9	0.102	0.021	< 0.01	0.065	0.032	0.03
	≥ 10	0.081	0.022	< 0.01	0.078	0.109	0.47

^aPart of the Randomised Badger Culling Trial (RBCT) in the south west region with three treatments – reactive proactive or no culling of badgers (survey only)
^b Standard Error

ISSN: 1746-6148