The Resistive Index Is a Marker of Renal Function, Pathology, Prognosis, and Responsiveness to Steroid Therapy in Chronic Kidney Disease Patients

Table 2

Comparisons of the clinical and histological data of patients with different levels of RI at renal biopsy by multiple univariate analysis.

	Normal RI group	High-normal RI group	High RI group
	RI < 0.65	0.65 ≤ RI < 0.70	RI ≥ 0.70
	(𝑛=120)	(𝑛=43)	(𝑛=39)
Age	42.5±1.4	50.5±2.7^∗	62.6±2.1^∗∗††
Systolic blood pressure (mmHg)	121±1	127±3	136±3^∗∗
Urinary protein level (g/gCr)	3.5±0.4	3.2±0.5	5.1±1.1
eGFR (mL/min/1.73 m^2)	73.4±2.3	50.6±4.1^∗∗	38.4±4.5^∗∗†
GS score	1.2±0.1	1.6±0.2	2.3±0.2^∗∗†
AS score	0.7±0.1	1.0±0.1	1.2±0.1^∗∗
TI score	1.2±0.1	1.8±0.1^∗∗	2.2±0.1^∗∗
Resistive index	0.576±0.004	0.667±0.002^∗∗	0.761±0.009^∗∗††
Renal length (cm)	10.8±0.1	10.7±0.1	10.3±0.1^∗∗

* P < 0.05 versus normal RI group, **P < 0.01 versus normal RI group, ^†P < 0.05 versus high-normal RI group, ^††P < 0.01 versus high-normal RI group.