Table 2.

Descriptive results and the relationship between potential risk factors and Brucella seropositivity at individual level using univariable logistic regression analyses

Variable	Category	Number (%)	Seropositive number (%)	P value
Breed (n = 904)	Local	823 (91)	16 (2)	0.7
	Othera	81 (9)	2 (2)
Age of the cow in years (n = 743)	≤4	202 (27)	4 (2)	0.4
	>4–6	308 (41)	4 (1)	0.2
	>6–8	154 (21)	4 (3)	0.6
	>8	79 (11)	3 (4)	Reference
Number of calf/calves produced per cow (n = 787)	≤2	357 (45)	5 (1)	0.051
	>2–4	277 (35)	4 (1)	0.07
	>4–6	100 (13)	3 (3)	0.4
	>6	53 (7)	3 (6)	Reference

^aOther breed includes mixed breed and cattle resembling Holstein-Friesian