Survival Analysis of Clinical Cases of Caseous Lymphadenitis of Goats in North Shoa, Ethiopia

Table 4

Proportional hazard regression analysis results of explanatory variables effect on caseous lymphadenitis with robust standard errors.

Variables		Parameter estimate	Standard error	St. err ratio	HR	95% HR CI	value
Age	Newborn vs. yearling	1.56880	0.29319	0.827	4.801	[2.702–8.529]	<0.0001
Sex	Female vs. male	0.61824	0.20285	1.159	1.856	[1.247–2.762]	0.0023
Breed	Boer vs. CHG	1.43907	0.22716	0.657	4.217	[2.702–6.582]	<0.0001
	Boer × CHG vs. CHG	1.51778	0.37440	0.912	4.562	[2.190–9.503]	<0.0001
Season	Summer vs. short rain	0.19403	0.29058	1.208	1.214	[0.687–2.146]	0.5043
	Dry vs. short rain	0.04796	0.17486	0.948	1.049	[0.745–1.478]	0.7839

Note. CI: confidence interval; St. err: standard error; HR: hazard ratio; CHG: Central Highland Goat.