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Table 1 Baseline characteristics of the study subjects

From: Urinary adiponectin and albuminuria in non-diabetic hypertensive patients: an analysis of the ESPECIAL trial

  

Urinary adiponectin

 

Variables

Total (n = 229)

1st tertile (n = 76)

2nd tertile (n = 77)

3rd tertile (n = 76)

P

Age (years)

49.5 ± 13.33

46.1 ± 14.29

51.2 ± 11.51*

51.2 ± 13.56*

0.022

Male (%)

49.8

64.5

40.3**

44.7*

0.006

Body mass index (kg/m2)

25.4 ± 3.81

25.5 ± 4.05

25.3 ± 3.63

25.4 ± 3.78

0.956

Mean blood pressure (mmHg)

105.6 ± 9.35

104.7 ± 9.07

104.8 ± 8.94

107.3 ± 9.90

0.161

Dyslipidemia (%)

56.6

47.9

64.4*

57.5

0.132

History of cardiovascular disease (%)

3.5

2.6

5.2

2.7

0.614

Current smoking (%)

12.2

7.9

7.8

21.1*

0.016

Regular exercise (%)

52.4

56.6

59.7

40.8

0.043

Intensive diet education (%)

48.5

56.6

33.8**

55.3

0.007

Medication (%)

     

 Beta blocker

35.4

32.9

31.2

42.1

0.316

 Calcium channel blocker

93.0

92.1

94.8

92.1

0.751

 Statin

48.5

35.5

55.8*

53.9*

0.021

 Antiplatelet agent

43.7

40.8

41.6

48.7

0.556

Blood findings

     

 Hemoglobin (g/dL)

14.0 ± 1.71

14.4 ± 1.60

14.0 ± 1.66

13.6 ± 1.77***

0.009

 Cholesterol (mg/dL)

183.8 ± 35.27

181.8 ± 33.49

183.4 ± 35.09

186.3 ± 37.42

0.722

 Uric acid (mg/dL)

6.4 ± 1.80

6.3 ± 1.80

6.1 ± 1.65

6.7 ± 1.93

0.192

 Creatinine (mg/dL)

1.1 ± 0.41

1.0 ± 0.29

1.1 ± 0.39

1.3 ± 0.49***

<0.001

 eGFR (ml/min/1.73 m2)

79.9 ± 24.62

88.9 ± 21.61

80.4 ± 21.89*

70.4 ± 26.75***

<0.001

Urine findings

     

 Adiponectin (μg/g creatinine)

34.5 (15.0–86.8)

11.2 (3.9–15.0)

34.5 (25.9–46.6)***

128.6 (86.5–202.9)***

<0.001

 24-h sodium (mEq/day)

155.1 ± 68.94

162.1 ± 77.81

145.9 ± 55.61

157.5 ± 71.54

0.328

 24-h albumin (mg/day)

550.0 (241.4–1286.1)

259.4 (134.3–517.2)

501.0 (268.0–1227.4)***

1317.0 (660.9–2419.5)***

<0.001

  1. Comparisons were evaluated using the chi-squared test for categorical variables, the ANOVA test for normally distributed continuous variables (post hoc analysis of LSD between two groups), and the Kruskal-Wallis test for non-normally distributed continuous variables (Mann–Whitney U test between two groups). The 1st tertile group served as a reference for comparison between two groups
  2. *P < 0.05; **P < 0.01; ***P < 0.001
  3. eGFR, estimated glomerular filtration rate