Table 3.

Multivariate linear regression of serum potassium variability.

Variables	Standard error	Standardized β	t	P-value
Dialysis vintage	0	−0.09	−2.12	< 0.05
History of diabetes mellitus a	0.02	0.02	0.52	0.61
Use of beta-blockers b	0.01	−0.06	−1.45	0.15
Hemoglobin	0	−0.09	−2.17	< 0.05
Prealbumin	0	−0.09	−2.01	< 0.05
Alkaline phoshatase	0	0.04	1.03	0.30

^a Compared to patients without history of diabetes mellitus.

^b Compared to patients without use of beta-blockers.