Table 2.

Comparisons of serum parameters and clinical assessments of BIA group with control group by 1-year intervention

VariablesTotal, n=175Control, n=84BIA, n=91P Value
Extracellular water, L15.1±3.215.6±3.114.5±3.20.04
Extracellular water/total body water, ×10e240.1 (39.3–41.0)40.4 (39.3–41.3)40.0 (39.3–40.7)0.03
Systolic BP, mm Hg140±15142±18139±140.14
Diastolic BP, mm Hg84±1384±1484±130.43
Change of serum calcium, mg/dl, ×10e3−0.3 (−1.5 to 1.2)−0.3 (−1.5 to 1.3)−0.3 (−1.6 to 1.1)0.51
Change of serum phosphorus, mg/dl, ×10e3)0.9 (−2.1 to 4.0)1.5 (−0.9 to 4)0.4 (−3.4 to 3.6)0.36
Change of iPTH, pg/ml−62 (−219 to 67)−93 (−277 to 110)−55 (−206 to 63)0.39
Change of hs-CRP, mg/L0.35 (0.81–3.79)−0.1 (−1.8 to 1.1)0.9 (−0.3 to 5.1)0.04
Change of hemoglobin, g/dl0.2±1.80.2±1.90.3±1.80.72
Change of serum albumin, g/dl−0.2±0.5−0.3±0.3−0.1±0.50.01
Change of prealbumin, mg/dl−22 (−52 to 37)−14 (−36 to 46)−32 (−76 to 20)0.29
SGA, n (%)0.001
 1116 (73.41)45 (60.00)71 (85.57)
 239 (24.68)29 (38.66)10 (12.04)
 33 (1.89)1 (1.33)2 (2.40)
Change of total Kt/V−1.2±0.1−1.2±0.1−1.2±0.10.99
Change of total Ccr, L/w−7.1±1.9−8.3±2.8−5.9±2.40.53
Change of residual urine, ml/24 h−100 (−300 to 0)−100 (−350 to 0)−275 (−560 to −90)0.69
Change of mGFR, ml/min per 1.73 m2−0.3 (−1 to 0)−0.3 (−1.0 to −0.1)−0.2 (−0.9 to 0)0.53
  • Values for continuous variables are given as mean±SD or median (interquartile range). Data were collected from patients who have completed the trial (n=175), whereas data from those who died, transplanted, transferred to HD, or withdrew within 1 year were unable to be collected. BIA, bioelectrical impedance analysis; iPTH, intact parathyroid hormone; hs-CRP, high-sensitive C-reactive protein; SGA, Subjective Global Assessment (1, grade A; 2, grade B; 3, grade C); Ccr, creatinine clearance; mGFR, measured GFR.