Table 2.

Summary of results of a multinomial logistic regression of the effects of genome-wide heterozygosity and introgression (as two level factors) on the likelihood of death and the likelihood of clinical illness

Phenotype	Dead calves (n = 68)			Ill calves (n = 243)
Factors	Estimate (SE)	OR (95% CI)	P -value	Estimate (SE)	OR (95% CI)	P -value
Low heterozygosity	1.13 (0.27)	9.5 (3.5-27.9)	< 0.001	0.61 (0.26)	3.4 (1.2-9.3)	0.018
Introgressed	0.16 (0.19)	1.4 (0.7-2.9)	0.39	0.43 (0.12)	2.4 (1.5-3.8)	< 0.001

Cut-offs for high/low heterozygosity and introgressed/non-introgressed are defined in Methods. Healthy calves were the reference category. CI = confidence interval. SE = standard error. OR = odds ratio. P-values in bold type are statistically significant.