Table 1 Subjects’ demographic and clinical characteristics

Gender(male)^&

13

15

13

Age(year)^#

56.86 ± 11.10

55.11 ± 13.76

51.96 ± 14.45

Education^& (≤ Junior/Senior/ ≥ College)

9/15/14

12/9/7

10/7/11

BMI(kg/m²)*

20.56 (19.36, 22.59)

22.41 (19.88, 24.26)

21.54 (20.27, 22.78)

HD duration(year)*

7.00 (3.25, 12.75)

2.75 (1.00, 6.00)

-

PSQI(score)*

17.00 (15.25, 18.75)

3.00 (2.00, 4.75)

4.00 (2.00, 4.75)

Sleep quality(score)*

3.00 (2.00, 3.00)

0.00 (0.00, 0.00)

1.00 (0.00, 1.00)

Sleep latency(score)*

3.00 (3.00, 3.00)

0.00 (1.00, 1.00)

0.00 (1.00, 1.00)

Sleep duration(score)*

3.00 (2.25, 3.00)

0.00 (0.00, 1.00)

0.00 (0.00, 1.00)

Sleep efficiency(score)*

3.00 (3.00, 3.00)

0.00 (0.00, 0.00)

0.00 (0.00, 0.00)

Sleep disturbances(score)*

2.00 (2.00, 2.00)

1.00 (0.25, 1.00)

1.00 (1.00, 1.00)

Day time dysfunction(score)*

3.00 (2.00, 3.00)

1.00 (0.00, 1.00)

1.00 (0.00, 1.00)

SDS(score)*

54.38 (46.25, 58.44)

38.13 (31.25, 43.13)

30.63 (26.25, 35.00)

SAS(score)*

44.38 (37.81, 50.94)

32.50 (29.06, 36.25)

31.88 (28.75, 37.50)

SF-36(score)*

447.75 (381.88, 623.88)

709.00 (626.38, 752.25)

774.75 (696.25, 791.75)