Table 3. Spearman's correlation coefficients between FGF23 and various variables.

	FGF23
	Total study patients		eGFR <60 mL/min/m2		eGFR ≥60 mL/min/m2
	(n = 100)		(n = 70)		(n = 30)
	r	P value	r	P value	r	P value
Age, year	−0.03	###	0.05	###	−0.44	###
Sex, (male  = 1)	0.11	###	−0.01	###	0.20	###
Body mass index	−0.20	###	−0.26	###	−0.13	###
Systolic blood pressure	−0.17	###	−0.14	###	−0.26	###
Diastolic blood pressure	−0.17	###	−0.16	###	−0.14	###
Pulse rate	0.02	###	0.18	###	−0.58	###
White blood cell count	−0.04	###	−0.14	###	0.18	###
Hemoglobin	−0.24	###	−0.41	###	0.18	###
Platelet count	0.00	###	0.04	###	−0.02	###
Total protein	0.13	###	0.17	###	0.04	###
Albumin	−0.06	###	−0.16	###	0.19	###
Total cholesterol	−0.01	###	−0.04	###	0.11	###
LDL cholesterol	−0.02	###	−0.07	###	0.12	###
HDL cholesterol	0.06	###	0.14	###	−0.05	###
Triglycerides	−0.05	###	−0.15	###	0.19	###
Blood urea nitrogen	0.19	###	0.24	###	−0.01	###
Creatinine	0.20	###	0.11	###	0.47	###
eGFR	−0.18	###	−0.12	###	−0.29	###
Alanine transaminase	−0.13	###	−0.25	###	0.31	###
Aspartate transaminase	−0.14	###	−0.23	###	0.16	###
B-type natriuretic peptide	0.20	###	0.16	###	0.23	###
C-reactive protein	0.03	###	0.08	###	−0.09	###
Corrected calcium	−0.02	###	−0.04	###	0.03	###
Inorganic phosphate	0.19	###	0.23	###	0.18	###
Intact parathyroid hormone	0.07	###	0.00	###	0.23	###
25(OH) Vitamin D, pg/mL	−0.03	###	−0.07	###	−0.05	###
1,25(OH)2 Vitamin D	0.01	###	0.03	###	−0.06	###