Table 3. Multivariate linear regression analysis coefficients for glomerular filtration rate estimated by CKD-EPI Equation.

Variables	Univariate			Multivariate
	Β	p-value	CI 95%	Β	p-value	CI 95%
Age	0.49	< 0.001	0.48 - 0.52	-0.67	< 0.001	-0.72 - -0.62
Female sex	0.86	0.011	0.77 - 0.97	-0.20	< 0.001	-0.29 - -0.12
BMI	0.81	< 0.001	0.77 - 0.86	-0.09	< 0.001	-0.14 - -0.04
Fasting glucose	0.84	< 0.001	0.80 - 0.90
Average SBP	0.74	< 0.001	0.70 - 0.78
Average DBP	0.74	< 0.001	0.70 - 0.78
Urine Na excretion	1.08	0.008	1.02 - 1.15	0.11	< 0.001	0.07 - 0.15

β = model coefficient; CI: confidence interval; BMI: body mass index; SBP: systolic blood pressure; DBP: diastolic blood pressure.