. 2018 Jun 26;32(4):1447–1461. doi: 10.1111/jvim.15220

Table 3.

Univariable binary logistic regression analysis for the prediction of specific ECG findings in a study population of 130 neonatal diarrheic calves

Variable	OR	95% CI for OR	P value
Presence of arrhythmias (n = 26)
Na⁺	0.956	0.916‐0.997	.034
K⁺/Na⁺‐ratio	1.52	1.082‐2.135	.016
Presence of bradyarrhythmias (n = 13)
K⁺	1.70	1.18‐2.43	.004
K⁺/Na⁺‐ratio	2.03	1.31‐3.16	.002
Presence of tall and peak‐shaped T waves (n = 37)
K⁺	2.0	1.43‐2.70	<.001
K⁺/Na⁺‐ratio	2.03	1.42‐2.90	<.001
Mg²⁺	20.4	4.7–87.8	<.001
Venous blood pH	0.02	0.002‐0.174	<.001
Absence of P waves (n = 8)
K⁺/Na⁺‐ratio	66.5	3.0–1501.0	.008
Mg²⁺	9.82	1.15–83.84	.037

Abbreviations: OR, odds ratio; 95% CI for OR, 95% confidence interval for odds ratio.

Plasma concentrations of potassium and sodium as well as venous blood pH, the K⁺/Na⁺‐ratio, plasma glucose and serum magnesium concentrations, and rectal temperature were used as independent variables. Only statistically significant associations are shown.