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Table 1 Details of demographic and clinical data, as well as biochemical parameters, of the total sample (n = 61) and separated by frailty classification in a group of Brazilian patients with pre-dialysis chronic kidney disease

From: Frailty and quality of life: a cross-sectional study of Brazilian patients with pre-dialysis chronic kidney disease

 

Total (n = 61)

Non-frail (n = 35)

Frail (n = 26)

p

 

Mean ± SD or n (%)

Age (years)

60.5 ± 11.5

57.3 ± 11.4

64.9 ± 10.3

0.009*

Female

25 (41.0%)

10 (28.6%)

15 (57.7%)

0.02*

Black phenotype

28 (45.9%)

13 (37.1%)

11 (42.3%)

0.11

Body mass index (kg/m 2)

25.9 ± 5.0

26.2 ± 4.0

28.0 ± 5.5

0.16

Smoking status

9 (14.8%)

5 (14.3%)

4 (15.4%)

0.90

Chronic kidney disease stages

   

0.15

  3

24 (39.3%)

17 (48.6%)

7 (26.9%)

 

  4

25 (42.6%)

12 (34.3%)

13 (50.0%)

 

  5

12 (19.7%)

6 (17.1%)

6 (23.1%)

 

Etiology of chronic kidney disease

   

0.56

  Arterial hypertension

18 (29.5%)

11 (31.4%)

7 (26.9%)

 

  Diabetes mellitus

11 (18.0%)

4 (11.4%)

7 (26.9%)

 

  Glomerulonephritis

9 (14.8%)

7 (20.0%)

2 (7.7%)

 

  Unknown

8 (13.1%)

4 (11.4%)

4 (15.4%)

 

  Undetermined or other

15 (24.6%)

9 (25.7%)

6 (23.1%)

 

Comorbidities

   

0.10

  Arterial hypertension

23 (56.1%)

14 (40.0%)

9 (34.6%)

 

  Diabetes mellitus

4 (9.8%)

3 (8.6%)

1 (2.6%)

 

  Other

25 (41.0%)

11 (31.5%)

14 (53.9%)

 

  None

9 (22.0%)

7 (20.0%)

2 (7.7%)

 

  Creatinine (mg/dL)

2.7 ± 1.3

2.7 ± 1.5

2.7 ± 1.0

0.89

  Glomerular filtration rate (mL/min/ 1.73 m 2)

26.8 ± 12.9

28.6 ± 13.1

24.3 ± 12.5

0.19

SF-36 domains

    

  Physical functioning

67.2 ± 25.3

84 ± 15.3

46 ± 19

0.0001*

  Role physical

65.9 ± 38.7

75 ± 35.3

53.8 ± 40.4

0.03*

  Bodily pain

68.8 ± 31.7

76.5 ± 26.7

58.4 ± 35.3

0.03*

  General health

56.4 ± 25.2

62 ± 23.8

48.9 ± 25.6

0.04*

  Vitality

69.5 ± 23.3

77.4 ± 21.6

58.8 ± 21.5

0.002*

  Social functioning

85.4 ± 25.7

84.9 ± 28.4

86 ± 22.1

0.87

  Role emotional

74.5 ± 37.2

76.1 ± 36.7

72.3 ± 38.5

0.69

  Mental health

76.0 ± 22.3

80.8 ± 21.3

69.5 ± 22.5

0.05*

  1. *p < 0.05.