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Table 2 Baseline characteristics of clinical data and correlation coefficient with AASI

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

Variables

N = 583

Correlation coefficient with AASI

P value

Age (years)

43 ± 16

0.263

<0.001

Duration (months)

24 ± 17

0.075

0.074

BMI (kg/m2)

23 ± 4

−0.019

0.652

Ln (Proteinuria + 1)

1.0 ± 0.7

−0.007

0.867

Hemoglobin (g/L)

113 ± 30

−0.203

<0.001

Albumin (g/L)

34 ± 13

0.004

0.931

Globulin (g/L)

24 ± 6

0.098

0.02

Serum Cystatin C (mg/L)

2.6 ± 2.1

0.296

<0.001

Serum creatinine (μmol/L)

339 ± 222

0.182

<0.001

eGFR-MDRD (ml/min/1.73m2)

59 ± 48

−0.200

<0.001

Cholesterol (mmol/L)

6.1 ± 3.1

−0.089

0.039

Triglyceride (mmol/L)

2.2 ± 1.8

−0.028

0.517

LDL-C (mmol/L)

3.9 ± 2.4

−0.08

0.062

HDL-C (mmol/L)

1.2 ± 0.5

−0.096

0.025

Glucose (mmol/L)

5.2 ± 1.5

0.079

0.057

Calcium (mg/dL)

8.6 ± 0.8

−0.079

0.056

Phosphate (mmol/L)

4.5 ± 1.6

0.178

<0.001

Calcium × Phosphate (mg2/dl2)

36 ± 10

0.163

<0.001

iPTH (pg/ml)

157 ± 73

0.179

<0.001

Uric acid (mmol/L)

458 ± 163

0.107

0.010

homocysteine (μmol/L)

16.4 ± 8.8

0.067

0.143

LVEF (%)

63 ± 16

0.036

0.445

LVMI (g/m2.7)

51 ± 21

0.205

<0.001

E/A ratio

1.2 ± 0.5

−0.114

0.018

cIMI (mm)

0.7 ± 0.3

0.156

0.002

Clinic-SBP (mmHg)

142 ± 24

0.168

<0.001

Clinic-DBP (mmHg)

85 ± 14

−0.006

0.881

average-SBP (mmHg)

134 ± 20

0.311

<0.001

average-DBP (mmHg)

80 ± 12

0.128

0.002

SBP-daytime (mmHg)

136 ± 19

0.322

<0.001

DBP-daytime (mmHg)

81 ± 11

0.166

0.005

SBP-bedtime (mmHg)

124 ± 31

0.296

<0.001

DBP-bedtime (mmHg)

74 ± 18

0.216

<0.001

Decline of SBP-bedtime

6 ± 11

−0.124

0.003

Decline of DBP-bedtime

7 ± 11

−0.226

<0.001

24h-MBP

98 ± 13

0.226

<0.001

Variability of SBP (%)

14 ± 9

−0.039

0.352

Variability of DBP (%)

19 ± 13

−0.188

<0.001

Variability of SBP-daytime (%)

13 ± 4

−0.114

0.006

Variability of DBP-daytime (%)

18 ± 6

−0.283

<0.001

Variability of SBP-bedtime (%)

11 ± 6

−0.091

0.029

Variability of DBP-bedtime (%)

15 ± 6

−0.162

<0.001

Pulse (beat/min)

77 ± 10

0.09

0.017

AASI (IU)

0.54 ± 0.17

1.000

<0.001

  1. (AASI: ambulatory arterial stiffness index, BMI: body mass index, eGFR: estimated glomerular filtration rate; LDL-C: low-density lipoprotein cholesterol; HDL-C: high-density lipoprotein cholesterol; iPTH: intact parathyroid hormone; LVEF: Left ventricular ejection fraction; LVMI: Left ventricular mass index; E: early mitral inflow filling velocity; A: peak mitral filling velocity at atrial contraction; cIMI: Carotid intima-media thickness. Serum calcium is corrected by the following formula: [calcium] (mg/dL) = measured [calcium] + ( 4.0-[serum albumin (mg/dl)]) × 0.8; SBP: systolic blood pressure; DBP: diastolic blood pressure; ABPM: ambulatory blood pressure monitoring).
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BMC Nephrology

ISSN: 1471-2369

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