Table 1.

Baseline characteristics of the BIA group and control group

CharacteristicsAll, n=240Control, n=120BIA, n=120
Male, n (%)122 (51)663 (53)59 (49)
Age, yr49±1550±1648±14
Vintage, mo32 (17–50)31 (16–49)32 (16–50)
Primary disease of ESKD, n (%)
Chronic glomerular nephritis136 (56)70 (58)66 (55)
Diabetes mellitus51 (21)25 (21)26 (22)
Hypertension16 (7)9 (8)7 (6)
SLE6 (3)3 (3)3 (3)
BMI, kg/m222.1±3.122.4±3.221.8±3.0
Systolic BP, mm Hg142±20142±21142±19
Diastolic BP, mm Hg83±1383±1484±12
Antihypertensive medication use, n (%)
No use30 (13)17 (14)13 (11)
Single use16 (6)8 (6)8 (7)
Two combinations41 (17)20 (17)21 (17)
Three combinations76 (32)37 (31)39 (32)
Four combinations63 (26)32 (27)31 (26)
Five combinations14 (6)6 (5)8 (7)
History of MI, n (%)18 (7.5)10 (8.3)8 (6.7)
History of stroke, n (%)10 (4.2)5 (4.2)5 (4.2)
Comorbidity score3 (2–5)3 (2–6)3 (2–5)
ECOG activity index, n (%)
13 (1)1 (1)2 (2)
2138 (58)68 (57)70 (58)
381 (34)39 (32)42 (35)
418 (7)12 (10)6 (5)
NYHA classification, n (%)104/117/1948/60/1256/57/7
1104 (43)48 (40)56 (47)
2117 (49)60 (50)57 (47)
319 (8)12 (10)7 (6)
Measured GFR, ml/min per 1.73 m20.9 (0.1–2.4)0.8 (0.1–2.4)0.9 (0.1–2.5)
Residual urine volume, ml/24 h250 (0–650)200 (0–550)300 (25–700)
Hemoglobin, g/dl10.8±1.910.7±2.010.9±1.8
Serum albumin, g/dl3.8±0.43.7±0.43.8±0.4
Prealbumin, mg/dl375±87372±86372±90
Uric acid, mg/dl4.6±0.94.5±0.94.6±0.9
iPTH, pg/ml412 (248–703)411 (266–665)413 (233–733)
hs-CRP, mg/L1.6 (0.6–4.5)1.6 (0.6–4.5)1.5 (0.5–4.8)
NT-proBNP, pg/ml4161 (1743–14536)5167 (1840–18700)4066 (1535–11246)
PD dosage, L/d8 (8–8)8 (8–8)8 (8–8)
Ultrafiltration volume, ml/24 h450 (200–800)500 (200–800)400 (200–800)
Total Kt/V2.3±0.62.2±0.62.3±0.6
Total creatinine clearance, L/w65±2265±2365±22
nPCR0.9±0.20.8±0.20.9±0.2
Peritoneal transport type, n (%) (n=212)
High and high-average transport type137 (65)72 (71)65 (59)
Low and low-average transport type75 (35)30 (29)45 (41)
Total body water, L37.5±7.737.9±7.737.0±7.6
Extracellular water, L15.4±3.315.6±3.215.2±3.4
Intracellular water, L22.1±4.622.4±4.421.7±4.9
Extracellular water//total body water, ×10e240.6 (40.3–41.3)40.8 (40.2–41.4)40.5 (40.1–41.3)
  • Values for continuous variables are given as mean±SD or median (interquartile range). BIA, bioelectrical impedance analysis; BMI, body mass index; MI, myocardial infarction; ECOG, Eastern Cooperative Oncology Group; NYHA, New York Heart Association; iPTH, intact parathyroid hormone; hs-CRP, high-sensitive C-reactive protein; NT-proBNP, N-terminal pro-B-type natriuretic peptide; PD, peritoneal dialysis; nPCR, normalized protein clearance rate.