. 2022 Dec 14;8(12):e12302. doi: 10.1016/j.heliyon.2022.e12302

Table 6.

Results of Cox regression analysis revealing risk factors for salmonellosis in layer chickens in Hawassa.

Variables	Categories	HR	P value	95% CI
Farm hygiene	Good	0.011	0.000	0.002, 0.046
	Poor
Use of antibiotics	Yes	0.044	0.000	0.011,0.169
	No
Age of chicken	4–5 month	0.069	0.003	0.012,0.398
	>5 month