Epidemiology of Avian Tuberculosis in Selected Districts of Oromia Region, Ethiopia

Table 2

Univariable logistic regression output of host-related and environmental risk factors and their odds of exposure of chickens to avian tuberculosis.

Variables	Categories	Percent of chickens tested, % (N)	Percent positive, % (N)	Odds ratio	value	95% confidence interval
Breed	Local	70.7 (193)	14.5 (28)	1
	Exotic	26.7 (73)	1.4 (1)	0.08	0.013	[0.01, 0.61]
	Cross	2.6 (7)	28.6 (2)	2.36	0.319	[0.44, 12.75]
Sex	Male	15.4 (42)	6.5 (2)	1
	Female	84.6 (231)	93.5 (29)	2.87	0.160	[0.66, 12.5]
Altitude	Highland	32.2 (88)	19.4 (6)	1
	Midland	35.6 (97)	41.9 (13)	2.12	0.148	[0.77, 5.83]
	Lowland	32.2 (88)	38.7 (12)	2.16	0.143	[0.77, 6.04]