Mortality and Morbidity of Beef Calves in Free-Range Farms in Alentejo, Portugal—A Preliminary Study

Table 6

Multiple regression model for calf deaths from birth to weaning ().

	b	Std. Err. of b	b	Std. Err. of b	-Value
Intercept	—	—	−0.48	0.46	0.308
Herd size	0.31	0.18	0.40	0.24	0.108
Diarrhea	0.07	0.18	0.05	0.13	0.725
Respiratory disease	0.13	0.16	0.14	0.17	0.420
Sudden deaths	0.51	0.16	0.54	0.17	0.005

b, coefficient; Std. Err., standard error; b, standardized coefficient; values are significant at the level.