a.

Parameters that correlated in the bivariate analysis¹

Independent variables	B	95.0% CI for B	t	p value	Collinearity statistics
					tolerance	VIF
Constant	93.293	62.2 to 124.4	6.031	0
eGFR (mL/min/1.73m2)	0.119	−0.05 to 0.29	1.429	0.159	0.685	1.459
Age (years)	0.037	−0.21 to 0.28	0.31	0.758	0.861	1.161
CXCL12 (ng/mL)	9.392	1.52 to 17.26	2.4	0.02	0.753	1.328
CRP (mg/dL)	0.59	−0.53 to 1.71	1.059	0.295	0.548	1.824