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Table 3 Multiple linear regression analysis: relationship between renal parameters (eGFR, Serum Cystatin C, serum creatinine and proteinuira) and AASI in CKD patients

From: The ambulatory arterial stiffness index and target-organ damage in Chinese patients with chronic kidney disease

Variables

Not standardized b

Confidence interval 95%

P value

Dependent variable: eGFR by MDRD formula (Adjusted R2 = 0.322)

Age (year)

−1.477

−1.685 ~ -1.263

<0.001

24h-MBP

−1.538

−1.770 ~ -1.291

<0.001

decline ratio of bedtime SBP

0.534

0.225 ~ -0.834

0.001

AASI (IU)

−20.033

−40.263 ~ -0.807

0.037

Dependent variable: Serum Cystatin C (Adjusted R2 = 0.304)

Age (year)

0.022

0.013 ~ 0.032

<0.001

24h-MBP

0.045

0.034 ~ 0.057

<0.001

Decline ratio of bedtime SBP

−0.038

−0.054 ~ -0.021

<0.001

AASI (IU)

1.795

0.883 ~ 2.707

<0.001

Dependent variable: Serum creatinine (Adjusted R2 = 0.213)

Sex

−91.657

−153.032 ~ -30.283

0.003

24h-MBP

9.259

6.940 ~ 11.579

<0.001

Decline ratio of bedtime SBP

−8.568

−11.744 ~ -5.392

<0.001

AASI (IU)

262.347

78.405 ~ 446.289

0.005

Dependent variable: ln(proteinuria + 1) (Adjusted R2 = 0.034)

Age

−0.008

−0.012 ~ -0.004

<0.001

24h-MBP

0.009

0.004 ~ 0.014

<0.001

  1. Adjusted Variables: Age; Sex: (male = 1; female = 2).
  2. Independent variable: ln (24Pro + 1), 24h-MBP, decline ratio of bedtime SBP, decline ratio of bedtime DBP, AASI (IU).
  3. (AASI: ambulatory arterial stiffness index, eGFR: estimated glomerular filtration rate, MBP: mean blood pressure; SBP: systolic blood pressure).