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

Table 5

Multiple regression model for calf deaths from 30 days to weaning ().

	b	Std. Err. of b	b	Std. Err. of b	-Value
Intercept	—	—	−0.83	0.40	0.050
Herd size	0.56	0.22	0.58	0.22	0.016
Diarrhea	−0.17	0.23	−0.11	0.15	0.466
Respiratory disease	−0.18	0.19	−0.19	0.19	0.351
Sudden deaths	0.35	0.20	0.34	0.19	0.092

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