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Table 1 Baseline clinical characteristics of PD patients (n = 1089)

From: The cut-off values of handgrip strength and lean mass index for sarcopenia among patients on peritoneal dialysis

Variates Total
(n = 1089)
Development cohort
(n = 762)
Validation cohort
(n = 327)
P
Age (years)a 56.4 ± 11.1 56.5 ± 15.2 56.1 ± 15.0 0.640
Male, n (%) 554 (50.8) 382 (50.1) 172 (52.4) 0.509
BMI (kg/m2) 23.2 ± 3.8 23.3 ± 3.8 23.0 ± 4.0 0.146
DM, n (%) 424 (38.9) 297 (39.0) 127 (38.7) 0.946
CVD, n (%) 431 (39.5) 293 (38.5) 138 (42.1) 0.280
Height (cm) 164.3 ± 8.5 164.3 ± 8.5 164.4 ± 8.7 0.867
Weight (kg) 62.1 ± 12.5 62.1 ± 12.0 62.1 ± 13.5 0.947
Handgrip strength (kg) 22.0 ± 10.9 22.0 ± 10.9 21.8 ± 10.7 0.664
Lean body mass (kg) 42.6 ± 8.5 42.6 ± 9.4 42.7 ± 8.9 0.917
Lean mass index (kg/m2) 15.6 ± 1.9 15.6 ± 1.9 15.6 ± 2.0 0.900
Laboratory and nutrition data     
 Serum albumin (g/L) 35.6 ± 4.6 35.4 ± 4.7 35.8 ± 4.4 0.188
 Hemoglobin (g/L) 101.8 ± 15.8 101.7 ± 16.0 102.2 ± 15.4 0.677
 Hs-CRP (mg/L) 2.2 (0.8, 6.1) 2.2 (0.9, 6.1) 2.2 (0.7, 6.1) 0.994
 Urea nitrogen (mmol/L) 23.0 ± 6.3 23.0 ± 6.5 22.9 ± 6.0 0.959
 Serum creatinine (umol/L) 712.6 ± 247.5 710.7 ± 247.3 717.0 ± 248.3 0.700
 Serum calcium (mmol/L) 2.20 ± 0.2 2.2 ± 0.2 2.2 ± 0.2 0.131
 Serum phosphorus (mmol/L) 1.6 ± 0.4 1.6 ± 0.4 1.6 ± 0.4 0.949
 Serum sodium (mmol/L) 139.2 ± 2.6 139.1 ± 2.6 139.2 ± 2.6 0.531
 Serum potassium (mmol/L) 4.4 ± 0.6 4.4 ± 0.6 4.4 ± 0.6 0.687
 HDL-cholesterol (mmol/L) 1.1 ± 0.3 1.1 ± 0.3 1.1 ± 0.4 0.299
 LDL-cholesterol (mmol/L) 2.6 ± 0.8 2.6 ± 0.8 2.6 ± 0.8 0.874
 Total cholesterol (mmol/L) 4.8 ± 1.2 4.9 ± 1.3 4.8 ± 1.1 0.244
 Triglycerides (mmol/L) 1.5 (1.1, 2.1) 1.5 (1.1, 2.0) 1.5 (1.2, 2.2) 0.239
 iPTH (pg/mL) 170.0 (82.3, 329.5) 178.9 (84.0, 336.7) 158.6 (76.8, 313.3) 0.246
 Total CCr (L/w/1.73 m2) 69.3 ± 28.8 68.8 ± 28.4 70.4 ± 29.6 0.432
 Total Kt/V 1.9 ± 0.6 1.9 ± 0.6 1.9 ± 0.6 0.646
 RRF (ml/min) 3.2 (1.7, 5.4) 3.2 (1.8, 5.1) 3.5 (1.5, 5.8) 0.345
  1. aValues are expressed as a mean ± standard deviation, percentage or median with upper and lower quartile or percentage
  2. PD peritoneal dialysis, BMI body mass index, DM diabetes mellitus, CVD cardiovascular disease, Hs-CRP high-sensitive C-reactive protein, HDL high density lipoprotein, LDL low density lipoprotein, iPTH intact parathyroid hormone, Total CCr total creatinine clearance, Total Kt/V total urea clearance, RRF residual renal function