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Table 1 Baseline Characteristics Split by Baseline CKD stages and Overall

From: The association of kidney function and cognitive decline in older patients at risk of cardiovascular disease: a longitudinal data analysis

 

Total

n = 5796

CKD stages based on eGFR (ml/min/1.73m2)

P-value*

Stage 4

n = 19

Stage 3b

n = 786

Stage 3a

n = 2306

Stage 1 and 2

n = 2685

Age (years)

75.3 ± 3.3

77.4 ± 3.1

76.8 ± 3.4

75.3 ± 3.3

74.9 ± 3.2

< 0.001

Male gender

2799 (48.3)

0

223 (28.4)

1029 (44.6)

1547 (57.6)

< 0.001

Education (years)

15.1 ± 2.0

15.1 ± 1.8

14.8 ± 1.6

15.0 ± 1.8

15.4 ± 2.3

< 0.001

History of hypertension

3585 (61.9)

18 (94.7)

568 (72.3)

1471 (63.8)

1528 (56.9)

< 0.001

History of diabetes

622 (10.7)

1 (5.3)

68 (8.7)

221 (9.6)

332 (12.4)

0.002

History of vascular disease

2561 (44.2)

7 (36.8)

400 (50.9)

1062 (46.1)

1092 (40.7)

< 0.001

History of stroke or TIA

647 (11.2)

1 (5.3)

86 (10.9)

271 (11.8)

289 (10.8)

0.584

Current smoker

1558 (26.9)

4 (21.1)

131 (16.7)

558 (24.2)

865 (32.2)

< 0.001

Number of medications

3.6 ± 2.3

5.2 ± 2.8

4.5 ± 2.3

3.7 ± 2.3

3.2 ± 2.2

< 0.001

SBP (mmHg)

154.7 ± 21.8

156.1 ± 27.3

154.8 ± 22.2

154.6 ± 21.5

154.6 ± 22.0

0.728

DBP (mmHg)

83.8 ± 11.4

82.5 ± 11.2

83.1 ± 10.7

83.6 ± 11.4

84.1 ± 11.6

< 0.001

BMI (kg/m2)

26.8 ± 4.2

26.6 ± 3.8

27.6 ± 4.4

26.8 ± 4.2

26.6 ± 4.1

< 0.001

LDL-C (mmol/l)

3.79 ± 0.80

4.06 ± 0.93

3.92 ± 0.81

3.85 ± 0.81

3.71 ± 0.78

< 0.001

HDL-C (mmol/l)

1.28 ± 0.35

1.29 ± 0.38

1.25 ± 0.34

1.28 ± 0.35

1.29 ± 0.35

< 0.001

Total cholesterol (mmol/l)

5.68 ± 0.91

6.02 ± 1.03

5.88 ± 0.94

5.74 ± 0.87

5.57 ± 0.87

< 0.001

Triglyceride (mmol/l)

1.54 ± 0.70

1.85 ± 0.74

1.76 ± 0.77

1.57 ± 0.69

1.46 ± 0.68

< 0.001

Glucose (mmol/l)

5.5 ± 1.4

5.13 ± 0.94

5.56 ± 1.40

5.50 ± 1.31

5.4 ± 1.6

< 0.001

CRP at 6 months (mg/l)

2.3 [1.1–4.5]

4.2 [2.1–10.1]

2.8 [1.4–5.7]

2.3 [1.1–4.6]

2.1 [1.0–4.1]

< 0.001

Urea (mg/dL)

6.3 ± 1.8

10.5 ± 1.8

7.9 ± 2.3

6.4 ± 1.6

5.8 ± 1.5

< 0.001

Hb (mmol/L)

8.7 ± 0.8

8.4 ± 0.7

8.4 ± 0.8

8.7 ± 0.8

8.8 ± 0.8

< 0.001

NT-proBNP at 6 months (ng/l)

148.7 [79.5–289.3]

417.0 [283.9–789.0]

230.2 [122.1–489.1]

151.5 [81.4–293.9]

127.6 [70.0–238.8]

< 0.001

Troponin at 6 months (μg/l)

0.010 ± 0.036

0.016 ± 0.010

0.013 ± 0.017

0.010 ± 0.042

0.010 ± 0.036

< 0.001

  1. All values are presented as n (%), mean ± SD or median [IQR]. * p-values of categorical data were assessed using the chi-square test and p-values of the continuous data were assessed using an one-way ANOVA test or a Kruskal-Wallis test. Abbreviations: BMI Body mass index, CKD Chronic kidney disease, CRP C-reactive protein, DBP Diastolic blood pressure, eGFR Estimated glomerular filtration rate, Hb Haemoglobin, HDL High-density lipoprotein, LDL Low-density lipoprotein, NT-proBNP N-terminal pro b-type natriuretic peptide, SBP Systolic blood pressure, SD Standard deviation, TIA Transient ischemic attack