Table 1 Baseline clinical and demographic data according to severity of depression

No. of patients

267

110

80

43

26

8

Age (year)

62.9 ± 12

62.3 ± 12.7

62.2 ± 11.6

63.5 ± 12.1

64.0 ± 9.7

70.1 ± 12.5

p = 0.3^b

Sex (M:F)

131:136

57:53

36:44

25:18

11:15

2:6

p = 0.5^a

Weight (kg)

64.9 ± 13.1

65.4 ± 13.7

63.3 ± 11.6

66.2 ± 15.0

66.1 ± 12.2

61.9 ± 14.3

p = 0.9^b

Height (cm)

160.2 ± 7.8

161.0 ± 7.8

159.0 ± 7.5

162.0 ± 7.5

159.0 ± 8.9

158.0 ± 6.4

p = 0.4^b

Duration of dialysis (months)

30.9 (13.8–62.1)

29.6 (14.9–55.7)

30.5 `(13.1–62.5)

42.7 (17.1–70.5)

22.4 (12.9–59.7)

38.4 (35.4–49.3)

p = 0.8^b

Renal diagnosis, no. of patient (%)

p = 0.17^a

 diabetic nephropathy

98 (36.7%)

37 (33.6%)

27 (33.8%)

20 (46.5%)

9 (34.6%)

5 (62.5%)

 hypertensive nephrosclerosis

30 (11.2%)

11 (10%)

9 (11.3%)

6 (14%)

4 (15.4%)

0 (0%)

 glomerulonephritis

84 (31.5%)

38 (34.5%)

25 (31.3%)

10 (23.3%)

8 (30.8%)

3 (37.5%)

 polycystic kidney

8 (3.0%)

4 (3.6%)

3 (3.8%)

1 (2.3%)

0 (0%)

0 (0%)

 urological problems

11 (4.1%)

9 (8.2%)

0 (0%)

1 (2.3%)

1 (3.8%)

0 (0%)

 unknown

30 (11.2%)

10 (9.1%)

14 (17.5%)

4 (9.3%)

2 (7.7%)

0 (0%)

 others

6 (2.2%)

1 (0.9%)

2 (2.5%)

1 (2.3%)

2 (7.7%)

0 (0%)

 diabetes

121 (45.3%)

47 (42.7%)

34 (42.5%)

23 (53.5%)

11 (42.3%)

6 (75%)

p = 0.3^a

 ischemic heart disease

29 (10.9%)

16 (14.5%)

13 (16.3%)

6 (14.0%)

3 (11.5%)

0 (0%)

p = 0.5^a

 cerebrovascular disease

47 (17.6%)

16 (14.5%)

15 (18.8%)

11 (25.6%)

3 (11.5%)

2 (25%)

p = 0.3^a

 peripheral vascular disease

9 (3.4%)

4 (3.6%)

0 (0%)

1 (2.3%)

3 (11.5%)

1 (12.5%)

p = 0.4^a

Charlson Comorbidity Index

5.66 ± 2.51)

5.45 ± 2.26

5.25 ± 2.32

5.37 ± 2.12

4.81 ± 1.72

6.50 ± 2.56

p = 0.4^b

PD exchange by assistants, no. of case (%)

34 (12.7%)

10 (9.1%)

9 (11.3%)

8 (18.6%)

2 (7.7%)

5 (37.5%)

p = 0.14^a

 serum albumin (g/L)

33.7 ± 4.37

34.1 ± 4.57

34.2 ± 3.92

31.8 ± 4.39

35.0 ± 3.15

28.4 ± 3.69

p = 0.09^b

 total cholesterol (mmol/l)

4.91 ± 1.35

4.95 ± 1.28

4.77 ± 1.34

4.86 ± 1.54

5.13 ± 1.39

5.08 ± 1.44

p = 0.9^b

 LDL cholesterol (mmol/l)

2.82 ± 1.13

2.82 ± 1.04

2.66 ± 1.09

2.92 ± 1.29

3.06 ± 1.20

2.89 ± 1.43

p = 0.8^b

 HDL cholesterol (mmol/l)

1.31 ± 0.57

1.32 ± 0.46

1.28 ± 0.53

1.21 ± 0.49

1.36 ± 0.48

1.87 ± 1.70

p = 0.5^b

 weekly Kt/V

1.82 ± 0.48

1.89 ± 0.53

1.81 ± 0.49

1.58 ± 0.36

1.86 ± 0.37

1.86 ± 0.47

p = 0.08^b

 residual GFR (ml/min/1.73m²)

1.46 ± 2.00

1.87 ± 2.25

1.34 ± 1.73

0.85 ± 1.87

1.33 ± 1.67

0.39 ± 0.81

p = 0.003^b