Table 1. Characteristics of participants (20 men and 10 women).

Values are presented as a mean ± standard deviation for continuous variables with normal distribution and a median (inter-quartile range) for continuous variables with skewed distribution.

BMI: Body mass index, eGFR: Estimated glomerular filtration rate, Hb: Hemoglobin, Alb: Albumin, CRP: C-reactive protein, IPS: Index of postural stability, TUG: Timed up & go test, FIM: Functional independence measure, CKD: Chronic kidney disease, GNRI: Geriatric nutritional risk index, IgA: Immunoglobulin A, ANCA: Antineutrophil cytoplasmic antibody

Variables	Edema (ECW/TBW >0.4) N=20	Non-edema (ECW/TBW <0.4 N=10	p-value
Men (n, %)	13 (65)	7 (35)	0.560
Age (years)	74.1 ± 8.7	66.8 ± 9.3	0.029
BMI (kg/m2)	23.4 ± 3.9	22.9 ± 4.1	0.778
eGFR (mL/min/1.73m2)	16.6 (11.5-48.9)	39.5 (7.7-73.0)	0.379
Alb (g/dl)	3.0 ± 0.6	3.8 ± 0.3	0.000
Hb (g/dl)	10.6 ± 2.1	12.9 ± 1.7	0.000
CRP (mg/dl)	0.1 (0.04-0.79)	0.05 (0.03-0.45)	0.365
GNRI	84.7±10.8	97.0±5.8	0.000
Total trajectory length (cm)	51.2 (43.7-75.1)	51.1 (39.7-89.2)	0.895
IPS	1.1 ± 0.5	1.3 ± 0.4	0.166
Knee extension muscle strength (Nm/kg)	1.1±0.4	1.6 ± 0.6	0.039
TUG (seconds)	8.5 ± 1.6	6.2 ± 1.7	0.007
Muscle mass (kg)	40.0 ± 9.4	41.3 ± 8.7	0.524
Edema score (point)	4.2 ± 2.9	1.8 ± 1.7	0.008
FIM (point)	125.5 (122.3-126)	126 (126)	0.056
Steroid (n, %)	0 (0)	1 (10)	0.333
Diuretic (n, %)	12 (60)	3 (30)	0.245
Antihypertensive (n, %)	17 (85)	6 (60)	0.143
Primary disease
Diabetic kidney disease (n, %)	13 (65)	4 (40)	0.181
Nephrosclerosis (n, %)	3 (15)	2 (20)	0.551
IgA glomerulonephritis (n, %)	0 (0)	2 (20)	0.103
Nephrotic syndrome (n, %)	2 (10)	0 (0)	0.437
Membranous nephritis (n, %)	1 (5)	0 (0)	0.667
Membranoproliferative glomerulonephritis (n, %)	1 (5)	0 (0)	0.667
ANCA (n, %)	0 (0)	1 (10)	0.333
Unknown (n, %)	0 (0)	1 (10)	0.333
CKD stage			0.437
CKD stage 2 (n, %)	3 (15)	4 (40)
CKD stage 3 (n, %)	4 (20)	2 (20)
CKD stage 4 (n, %)	5 (25)	1 (10)
CKD stage 5 (n, %)	8 (40)	3 (30)