Table 3.

Adjusted objective and subjective sleep parameters in participants

Sleep CharacteristicControlCKD − ControlP (CKD versus control)HD − ControlP (HD versus control)HD − CKDP (HD versus CKD)
Rest per day (min)443.0 (392.1, 493.8)−1.3 (−47.4, 44.7)1−2.8 (−55.7, 50.0)0.9−1.5 (−43.5, 40.6)0.9
Sleep onset latency (min/day)23.0 (−1.3, 47.3)15.2 (−7.0, 37.4)0.250.2 (25.0, 75.5)<0.000135.0 (15.1, 54.9)<0.001
Snooze time (min/day)23.0 (9.4, 36.7)8.2 (−4.1, 20.4)0.217.6 (3.4, 31.8)0.029.4 (−2.0, 20.9)0.1
Wake but rest (min/day)1.3 (−9.8, 12.4)2.2 (−7.8, 12.3)0.713.7 (2.1, 25.2)0.0211.4 (2.3, 20.6)0.01
Active time (min/day)791.0 (726.0, 855.9)37.3 (−20.5, 95.2)0.236.0 (−31.7, 103.7)0.3−1.3 (−56.4, 53.8)1
Sleep (min/day)358.3 (312.5, 404.2)−32.5 (−74.5, 9.4)0.1−73.9 (−121.5, −26.3)<0.01−41.3 (−78.6, −4.1)0.03
Sleep/rest time (%)81.2 (74.4, 87.9)−6.7 (−13.0, −0.5)0.04−15.5 (−22.5, −8.5)<0.0001−8.8 (−14.2, −3.4)<0.01
WASO (min/day)63.1 (42.7, 83.5)7.9 (−10.6, 26.4)0.410.9 (−10.3, 32.1)0.33.0 (−13.9, 19.9)0.7
Sleep efficiency (%)75.6 (67.2, 83.9)−8.6 (−16.3, −0.9)0.03−21.0 (−29.7, −12.3)<0.0001−12.4 (−19.1, −5.6)<0.001
Fragmentation Index (%)16.1 (10.2, 22.0)8.4 (3.0, 13.9)<0.0117.3 (11.2, 23.5)<0.00018.9 (4.2, 13.6)<0.001
Subjective quality of sleep
    overall sleep quality56.8 (43.7, 69.9)−5.7 (−18.1, 6.7)0.4−11.1 (−25.0, 2.8)0.1−5.4 (−15.5, 4.8)0.3
    sleep maintenance58.2 (41.6, 74.8)−2.8 (−18.5, 12.8)0.7−8.1 (−25.7, 9.4)0.4−5.3 (−18.2, 7.5)0.4
    sleep sufficiency50.4 (33.8, 67.0)−5.8 (−21.3, 9.8)0.5−7.8 (−25.3, 9.7)0.4−2.1 (−15.0, 10.8)0.8
    daytime somnolence63.8 (48.6, 78.9)−5.6 (−20.0, 8.7)0.46.6 (−9.5, 22.7)0.412.2 (0.4, 24.0)0.04
    sleep quality (KDQOL score)56.7 (45.6, 67.9)−4.6 (−15.2, 6.1)0.4−5.1 (−17.0, 6.8)0.4−0.5 (−9.2, 8.2)0.9
  • HD, hemodialysis.