Brucellosis in Camels and Humans: Seroprevalence and Associated Risk Factors in Amibara District of Afar Region, Ethiopia

Table 3

Multivariable Firth’s bias-reduced logistic regression analysis of factors associated with brucellosis seropositivity in camel.

Variables	Number tested	Seropositive	Adjusted OR	(95% CI)	value
Parity number
Null	32	0	1	1	—
Less than or = 3	160	2	0.15	(−5.31, 3.233)	0.357
Greater than 3	49	6	2.75	(−195, 6.00)	0.511
Abortion history
Yes	36	7	49.6	(2.148, 6.34)	≤0.002
No	205	1		1	—

1: reference