Table 4.

Univariable time‐invariant Cox regression results identifying baseline predictors of total hypercalcemia in cats stratified by renal status

	n	HR (95% CI)	P
CKD cats
Total calcium (mg/dL)	191	2.55 (1.68–3.87)	<.001
PTH (<9.0 pg/mL)	32		.025
9.0–25.0 pg/mL	32	0.38 (0.16–0.89)	.026
>25.0 pg/mL	28	0.36 (0.14–0.92)	.033
Creatinine (mg/dL)	191	1.42 (0.96–2.10)	.076
Chloride (mEq/L)	191	0.93 (0.86–1.01)	.089
Nonazotemic cats
Total calcium (mg/dL)	176	5.92 (2.21–15.83)	<.001
Creatinine (mg/dL)	176	5.95 (0.99–35.61)	.051

CKD, chronic kidney disease; n, number of cats; HR, hazard ratio; 95% CI, 95% confidence interval; PTH, parathyroid hormone; P, significance.