Epidemiological study on calf diarrhea and coccidiosis in dairy farms in Bahir Dar, North West Ethiopia

Table 2 Explanatory variables significantly associated with the incidence of calf diarrhea based on univariate and multivariate analysis of cox proportional hazards regression model

Variables	Categories	Univarate Analysis			Multivariate Analyses
Variables	Categories	HR^a	95% CI	P value	HR^a	95% CI	P value
Age	< 6 months	0.455	0.275–0.754	.002	2.057	1.290–3.279	.002
Age	6–12 months	0.455	0.275–0.754	.002	2.057	1.290–3.279	.002
Body Condition	Good	0.253	0.151–0.423	.000	1.802	1.338–2.426	.000
Body Condition	Poor	0.253	0.151–0.423	.000	1.802	1.338–2.426	.000
House hygiene	Poor	1.966	1.202–3.215	.007	–	–	–
House hygiene	Good	1.966	1.202–3.215	.007	–	–	–
House condition	Separated	0.480	0.301–0.764	.002	2.072	1.253–3.425	.004
House condition	Unseparated	0.480	0.301–0.764	.002	2.072	1.253–3.425	.004
Parity of dam	Multiparous	0.643	0.416–0.996	.046	–	–	–
Parity of dam	Primiparous	0.643	0.416–0.996	.046	–	–	–
Age at 1stCF	< 6 h	0.467	0.295–0.740	.001	2.107	1.304–3.404	.002
Age at 1stCF	> 6 h	0.467	0.295–0.740	.001	2.107	1.304–3.404	.002
Mother instinct	Good	0.539	0.346–0.841	.006	–	–	–
Mother instinct	Poor	0.539	0.346–0.841	.006	–	–	–

^aHazard ratio (which has similar meaning to relative risk), Age at 1^st CF = age at first colostrum feeding

ISSN: 2046-0481