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Table 1 Demographics and clinical characteristics of participants

From: Trace element supplementation in hemodialysis patients: a randomized controlled trial

 

Medium

Low

Standard

dose

dose

dose

N

52

47

51

Age, y

63 (59,67)

60 (57,64)

58 (54,62)

Male

39 (75)

35 (74.5)

37 (72.5)

Caucasian/white

41 (78.8)

36 (76.6)

42 (82.4)

BMI, kg/m2

29 (27,30)

31 (29,34)

27 (25,29)

Smoker

4 (7.8)

8 (17)

13 (25.5)

Primary cause of ESRD

   

Diabetes

22 (42.3)

26 (55.3)

19 (37.3)

Glomerulonephritis

10 (19.2)

9 (19.1)

7 (13.7)

Hypertension

7 (13.5)

4 (8.5)

8 (15.7)

PCKD

1 (1.9)

1 (2.1)

6 (11.8)

Other

11 (21.2)

7 (14.9)

11 (21.6)

Comorbidities

   

Cancer

8 (15.7)

8 (17)

7 (13.7)

CAD

21 (41.2)

16 (34)

15 (29.4)

Diabetes1

9 (17.6)

4 (8.5)

5 (9.8)

Heart failure

12 (23.5)

6 (12.8)

12 (23.5)

Hypertension

41 (80.4)

38 (80.9)

33 (64.7)

PVD

4 (7.8)

2 (4.3)

2 (3.9)

Seizure disorder

2 (3.9)

2 (4.3)

3 (5.9)

Stroke

3 (5.9)

5 (10.6)

3 (5.9)

Salt sensitivity

   

No recognition

10 (19.6)

9 (19.2)

10 (19.6)

Recognition2

0.8 (0.7,0.9)

0.8 (0.7,0.8)

0.8 (0.7,0.8)

Dectection2

0.7 (0.7,0.8)

0.7 (0.6,0.7)

0.7 (0.6,0.7)

Serum concentrations, ug/L

   

Copper

1131 (962,1266)

1066 (919,1237)

1024 (864,1213)

Selenium

139 (135,143)

137 (133,142)

135 (129,141)

Zinc

884 (851,917)

861 (823,898)

911 (867,955)

Low copper status

22 (42.3)

23 (48.9)

27 (52.9)

Low selenium status

8 (15.4)

9 (19.2)

14 (27.5)

Low zinc status

20 (38.5)

20 (42.6)

18 (35.3)

  1. N (%) or mean (95% confidence intervals) where appropriate. Low copper status <1061 ug/L. Low selenium status <121 ug/L. Low zinc status <815 ug/L.
  2. BMI body mass index, ESRD end-stage renal disease, PCKD poly cystic kidney disease, CAD coronary artery disease, PVD peripheral vascular disease.
  3. 1Those participants with diabetic nephropathy were not included in the counts for comorbid diabetes.
  4. 2In those participant with recognition of a salty taste.