Table 2.

Step Wise Association of Risk Factors with Seropositivity of Bovine Brucellosis

Factors	Variables	Tested Animal	Positive	Seropositivity	P-value	Odds ratio [95% CI]
Breed	Cross	27	2	7.4
	Local	1125	19	1.7	0.014	8.905 [1.568–50.573]
Sex	Male	336	2	0.6
	Female	816	19	2.3	0.166	2.966 [0.638–13.794]
Age	6 months–3 years	240	2	0.8
	3–6 years	622	12	1.9	0.358	0.307 [0.056–1.668]
	6 years	290	7	2.4	0.171	0.523 [0.147–1.862]
BCS	Poor	375	15	4
	Medium	635	4	0.6	0.118	3.550 [0.725–17.375]
	Good	140	2	1.4	0.348	0.428 [0.073–2.518]
Retention of placenta (only female)	Present	60	13	21.66
	Absent	756	6	0.79	≤0.001	0.018 [0.002 −0.169]
Abortion history (only female)	Absent	745	7	0.94
	Present	71	12	8.7	≤0.001	0.030 [0.004 −0.212]
Parity (only female)	No parity	359	5	1.39
	Single parity	92	2	2.17	0.040	27.372 [1.158 −646.908]
	Multiple parity	365	12	3.29	0.045	0.017 [0.042 −5.195]
Pregnant status (only female)	Not Pregnant	542	6	1.11
	Pregnant	274	13	4.66	0.633	0.566 [0.055–5.831]