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Table 2 Mean changes in the objective sleep quality (primary outcome) and the subjective sleep quality (secondary outcome) observed during this study

From: Effect of bioelectrical impedance analysis-guided dry weight adjustment, in comparison to standard clinical-guided, on the sleep quality of chronic haemodialysis patients (BEDTIME study): a randomised controlled trial

  Baseline 1 month 3 month 6 month
Sleep efficiency
 -BIA group 72.52 (13.45) 71.98 (9.49) 72.88 (13.77) 71.44 (14.79)
 -Clinical group 71.35 (18.08) 67.62 (19.09) 66.08 (25.18) 71.60 (24.10)
 -Between-group difference (95% CI) −2.05 (−6.05 to 1.96) −2.21 (−6.29 to 1.87) −1.37 (−5.53 to 2.79)
 -P-value 0.32 0.29 0.52
Sleep duration
 -BIA group 305.92 (84.31) 288.86 (64.69) 306.75 (83.54) 297.45 (103.85)
 -Clinical group 315.83 (89.06) 309.48 (84.13) 299.04 (114.92) 325.19 (125.59)
 -Between-group
difference (95% CI)
    
−11.98 (−42.47 to 18.50) −6.84 (−37.91 to 24.24) 2.12 (−29.55 to 33.79)
 -P-value 0.44 0.67 0.90
WASO
 -BIA group 57.15 (27.82) 50.15 (18.64) 47.31 (29.39) 46.57 (21.31)
 -Clinical group 54.51 (18.52) 62.83 (32.72) 44.98 (25.25) 45.14 (19.95)
 -Between-group difference (95% CI) 0.26 (−10.06 to 10.58) −8.45 (−18.97 to 2.07) −6.67 (−17.38 to 4.04)
 -P-value 0.90 0.12 0.22
PSQI scores
 -BIA group 7.9 (2.42) 6.8 (2.78) 5.6 (2.5) 4.44 (0.88)
 -Clinical group 9.22 (3.83) 9.44 (3.13) 8.13 (2.1) 6.62 (3.66)
 -Between-group difference (95% CI) −0.47 (−1.76 to 0.81) −1.82 (−3.13 to − 0.51) −3.16 (−4.49 to − 1.83)
 -P-value 0.47 0.006 <  0.001
ESS
 -BIA group 8.4 (6.57) 8.8 (6.75) 7.5 (7.56) 7.89 (7.49)
 -Clinical group 6.11 (4.65) 6.78 (3.23) 4.88 (3.40) 5.38 (4.93)
 -Between-group difference (95% CI) 0.53 (−1.10 to 2.15) −1.12 (−2.77 to 0.54) −0.82 (−2.51 to 0.86)
 -P-value 0.53 0.19 0.34
  1. PSQI score, ESS score, sleep efficiency, sleep duration, and WASO were expressed as the mean (SD). Changes in the PSQI score, ESS score, sleep efficiency, sleep duration, and WASO from the baseline to 1 month, 3 months, and 6 months were shown with 95% CIs