Table 4.

Independent multivariate correlates of renal resistive index in the overall study population

Outcome variable: Renal resistive index	Regression coefficients
	Not standardized		Standardized
	B	Standard error	β	t	P
(A) Model (R 2 = 0.33)
(Constant)	0.496	0.025	/	19.834	<0.001
Carotid IMT	0.648	0.109	0.258	5.936	<0.001
Clinic PP	0.001	<0.001	0.117	2.747	0.006
Age	0.001	<0.001	0.151	2.768	0.006
Log (albuminuria)	0.010	0.004	0.115	2.568	0.011
eGFR	<0.001	<0.001	−0.097	−1.739	0.083
(B) Model (R 2 = 0.34)
(Constant)	0.500	0.023	<0.001	22.181	<0.001
Carotid IMT	0.649	0.177	0.229	3.669	<0.001
Clinic PP	0.001	<0.001	0.193	3.061	0.002
Age	0.001	<0.001	0.172	2.406	0.017
Log (albuminuria)	0.010	0.004	0.133	2.237	0.026
Clinic PP × eGFR	<0.001	<0.001	−0.153	−2.211	0.028

See text for further explanation about the multivariate models. Variables shown in italics came close to statistical significance. [A] aPWV did not attain statistical significance (β = 0.072; P = 0.272). [B] aPWV did not attain statistical significance (β = 0.043; P = 0.394).

Abbreviations: eGFR, glomerular filtration rate; PP, pulse pressure; IMT, intima-media thickness.