Table 2.

Multiple linear regression modeling: association of independent variables with log cFGF23 and association of independent variables with percentage of intact FGF23 in CKD mice

Independent Variable	Standardized Coefficient (95% CI)	P Value	Adjusted R2	n
log cFGF23
Log liver iron	−0.55 (−0.81, −0.28)	<0.001	0.37	42
Phosphate	−0.24 (−0.56, 0.08)	0.13
Urea nitrogen	0.64 (0.31, 0.96)	<0.001
Percentage intact FGF23
Log liver iron	0.55 (0.31, 0.79)	<0.001	0.49	42
Phosphate	−0.12 (−0.40, 0.17)	0.41
Urea nitrogen	0.41 (0.12, 0.70)	0.007

Models evaluated the independent associations of iron, phosphate, and urea nitrogen with FGF23 parameters in the CKD cohort.