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Table 1 Baseline characteristics of patients at study initiation

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

  Total (n = 19) BIA group
(n = 10)
Clinical group
(n = 9)
P-value
Male sex, n (%) 8 (42.11) 5 (50) 3 (33.33) 0.65
Age, yrs 63.53 (11.12) 63.4 (11.69) 63.66 (11.16) 0.90
Comorbidity, n (%)     0.63
 -DM 11 (57.89) 6 (60) 5 (55.56)  
 -HT 17 (89.47) 9 (90) 8 (88.89)  
 -CVD 6 (31.58) 4 (40) 2 (22.22)  
Cause of ESRD, n (%)     0.59
 -DN/DKD 9 (47.37) 6 (60) 3 (33.33)  
 -HT 5 (26.32) 2 (20) 3 (33.33)  
 -Others 5 (26.32) 2 (20) 3 (33.33)  
Benzodiazepines, n (%) 2 (10.53) 0 (0) 2 (22.22) 0.21
Dialysis vintage, yrs 4 (2, 8.5) 3.5 (2, 8) 8 [2, 9] 0.12
RRF, ml 0 (0, 150) 100 (0, 200) 0 (0, 10) 0.52
HD mode, n (%) 16 (84.21) 9 (90) 7 (77.78) 0.58
HD shift, n (%)     0.43
 -Morning 6 (31.58) 3 (30) 3 (33.33)  
 -Noon 8 (42.11) 3 (30) 5 (55.56)  
 -Evening 5 (26.32) 4 (40) 1 (11.11)  
BMI, kg/m2 23.45 (5.81) 25.63 (7.00) 21.03 (2.89) 0.08
Pre-PR, bpm 71.21 (8.73) 69.7 (10.64) 72.89 (6.17) 0.44
Pre-SBP, mmHg 145.89 (24.15) 146.8 (24.93) 144.89 (24.72) 0.87
Pre-DBP, mmHg 75.37 (14.33) 72.5 (11.42) 78.56 (17.14) 0.37
eKt/V 2.03 (0.43) 1.90 (0.49) 2.18 (0.31) 0.15
Hb, g/L 108.4 (12.5) 108.5 (13.6) 108.2 (12.0) 0.90
Ferritin, pmol/L 665.11 (355.03, 1467.63) 1142.71 (315.48, 1591.33) 610.96 (357.50, 665.11) 0.09
TSAT, % 0.25 (0.08) 0.27 (0.10) 0.23 (0.05) 0.24
Calcium, mmol/L 2.22 (0.21) 2.23 (0.23) 2.22 (0.20) 0.90
Phosphorus, mmol/L 1.67 (0.48) 1.69 (0.51) 1.66 (0.46) 0.89
Intact PTH, pmol/L 46.65 (24.35, 62.92) 34.73 (17.55, 58.61) 61.04 (39.01, 74.16) 0.37
Albumin, g/L 33.10 (3.0) 32.6 (2.8) 33.7 (3.3) 0.47
B2M, nmol/L 1849.02 (1620.02, 2158.61) 1836.30 (1628.50, 2205.26) 1849.02 (1611.54, 1976.25) 0.87
PSQI 8.53 (3.15) 7.9 (2.42) 9.22 (3.83) 0.38
ESS 7.32 (5.71) 8.4 (5.87) 6.11 (5.42) 0.40
Sleep efficiency, % 71.96 (15.36) 72.52 (13.45) 71.35 (18.08) 0.87
Sleep duration, min 310.61 (84.29) 305.92 (84.31) 315.83 (89.06) 0.81
WASO, min 55.9 (23.27) 57.15 (27.82) 54.51 (18.52) 0.81
Excess fluid assessed by BIA (L) 0.5 (0.11, 1.6) 0.97 (0.35, 1.8) 0.11 (0.09, 1.22) 0.06
ECW/TBW 0.406 (0.005) 0.408 (0.006) 0.404 (0.003) 0.06
  1. Values expressed as the mean (SD) or median (25th, 75th percentiles)