Table 8 Stepwise multiple linear regression analysis for the predictors of GFR among the studied patients

R²

Adjusted R²

SEE

F

P-value

Model summary

0.432

0.401

14.7

14.07

< 0.001 (HS)

Variable

Unstandardized coefficients

Standardized coefficients

95% CI of B

T

P

B

Std. error

Beta

(Constant)

139.8

12.7

114.1 to 165.6

11.0

< 0.001 (HS)

HbA1c

− 4.36

1.69

− 0.401

− 6.79 to − 0.93

2.57

0.014 (S)

Serum Cystatin C

− 8.28

3.87

− 0.333

− 16.1 to − 0.432

2.14

0.039 (S)