Table 1.

Risk factors analysis to Brucella canis seroprevalence in 193 dogs from the Patos municipality, State of Paraíba, in the Northeast region of Brazil.

Variables	Sample size	Univariate analysis		Multivariate analysis
		Seropositive (%)	P	Odds ratio	IC 95%	P
Owner education
Illiterate	2	0 (0.0)
1st– 8th grade	82	4 (4.9)
Secondary	67	1 (1.5)
Higher	42	1 (2.4)	0.666
Sex of the dogs
Female	83	2 (2.4)
Male	110	4 (3.6)	0.701
Age (months)
3 – 6	14	0 (0.0)
6 – 12	46	2 (4.3)
12 – 24	44	2 (4.5)
> 24	89	2 (2.2)	0.669
Breed
Mixed	110	3 (2.7)
Pure	83	3 (3.6)	1.000
Access to street
No	140	5 (3.6)
Yes	53	1 (1.9)	1.000
Food
Commercial	71	2 (2.8)
Prepared at home	64	1 (1.6)
Scraps	58	3 (5.2)	0.510
Contact with other dogs
No	93	4 (4.3)
Yes	100	2 (2.0)	0.431
Contact with wildlife
No	181	6 (3.3)
Yes	12	0 (0.0)	1.000
Dog’s environment
Soil	106	4 (3.8)
Cement	87	2 (2.3)	0.692
Cleaning of the dog’s environment
Yes	169	3 (1.8)		1
No	24	3 (12.5)	0.026	7.91	1.5 – 41.72	0.015
Abortion destination
Throw away	189	6 (3.2)
Burying/burning	4	0 (0.0)	1.000
Walk with the dogs*
No	72	4 (5.6)
Yes	121	2 (1.7)	0.198
Contact with ponds
No	164	6 (3.7)
Yes	29	0 (0.0)	0,594

^*Variables selected and used in the multivariate analysis