Table 2.

Multinomial logistic regression model identifying associations between risk factors and either the development of acute kidney injury (stages 1‐3) or the presence of azotemia on baseline with reference to horses with no kidney dysfunction (stage 0)

	Stage 0 vs stages 1‐3			Stage 0 vs azotemia
	OR	95% CI	P‐value	OR	95% CI	P‐value
(Intercept)	0.073	0.02‐0.2	<.001	0	NA	<.001
SIRS	0.15	0.02‐1.07	.06	NS	NS	NS
Tetracycline	0.015	0‐1.62	.08	NS	NS	NS
Hypovolemia	NS	NS	NS	8.6	1.8‐41.1	.17
Number of diagnoses	NS	NS	NS	4.1	1.5‐11.2	.16

Abbreviations: CI, confidence interval; NS, Not significant in univariable therefore not included in multinomial model; OR, odds ratio; SIRS, systemic inflammatory response syndrome.