Table 2.

 Result of univariate and multivariate logistic regression analysis of factors potentially associated with survival in foals with diarrhea.

Variable a	Survival	P
	OR (95% CI)
Univariate analysis
Heart rate (bpm; n = 201)	0.979 (0.963–0.996)	.015
Temperature (°F; n = 201)	1.28 (0.986–1.67)	.064
Age (days; n = 217)	1.01 (0.998–1.01)	.167
Total protein (g/dL; n = 167)	1.49 (0.930–2.39)	.097
Neutrophils (× 1000/μL; n = 194)	0.946 (0.889–1.01)	.080
PCV (%; n = 199)	0.942 (0.894–0.992)	.024
Calcium (mg/dL; n = 190)	0.778 (0.597–1.01)	.063
Glucose (mg/dL; n = 195)	1.01 (0.999–1.02)	.063
Chloride (mEq/L; n = 195)	1.04 (1.00–1.09)	.049
Sepsis score (n = 57)	0.866 (0.745–1.01)	.060
Use of probiotics (n = 201)	3.85 (0.875–17.0)	.074
Multivariate model (n = 184) b
Heart rate (bpm)	0.979 (0.873–0.995)	.030
Neutrophils (× 1000/μL)	0.932 (0.999–1.00)	.034
Calcium (mg/dL)	0.668 (0.483–0.922)	.014
Glucose (mg/dL)	1.01 (1.00–1.02)	.012

CI, confidence interval; OR, odds ratio.

^a All variables listed in Table 1 were tested. Only values with P < .1 are presented in Table 2.

^b Overall significance of the multivariate model, P= .0004.