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Table 2 The PD-related information of patients

From: Roles of peritoneal clearance and residual kidney removal in control of uric acid in patients on peritoneal dialysis

VariablesTotal
(n = 180)
Lower peritoneal UA clearance
(n = 90)
Higher peritoneal UA clearance
(n = 90)
P value
Peritoneal UA clearance(L/week/1.73 m2)40.2 ± 7.134.6 ± 3.545.8 ± 5.0
PD vintage (m)1.6 (1.4–19.8)1.5 (1.3–8.4)2.3 (1.4–49.9)0.01
Average dialysate glucose concentration (%)1.5 (1.5–1.7)1.5 (1.5–1.5)1.5 (1.5–1.8)< 0.001
Dialysis dose (L/d)8.103 ± 0.8437.939 ± 0.8008.267 ± 0.8590.006
DAPD (n, %)12 (6.7)4 (3.2)8 (4.8)0.37
Total Kt/V2.3 ± 0.52.2 ± 0.42.4 ± 0.60.03
Residual renal Kt/V0.7 ± 0.50.8 ± 0.40.6 ± 0.50.02
Peritoneal Kt/V1.7 ± 0.31.5 ± 0.31.8 ± 0.3< 0.001
CCL (L/week/1.73m2)76.1 (60.4–93.1)76.8 (63.2–94.7)74.7 (59.0–91.5)0.36
Residual renal CCL (L/week/1.73m2)30.4 (10.4–49.8)38.3 (20.4–56.1)22.5 (1.5–44.0)< 0.001
Peritoneal CCL (L/week/1.73m2)46.1 (41.0–51.3)41.3 (38.7–43.2)50.9 (48.0–56.6)< 0.001
mGFR (mL/min/1.73m2)3.1 ± 2.43.8 ± 2.42.3 ± 2.3< 0.001
Residual urine volume (L)0.700 (0.300–1.200)0.850 (0.550–1.225)0.555 (0.050–1.100)0.003
nPCR (g/kg/d)0.889 (0.769–1.076)0.856 (0.765–1.028)0.934 (0.785–1.126)0.05
PET category (%)
 High15 (8.3)1 (1.1)14 (15.6)0.001
 High average107 (59.4)47 (52.2)60 (66.7)0.07
 Low average54 (30.0)38 (42.2)16 (17.8)0.001
 Low4 (2.2)4 (4.4)0 (0.0)0.13
  1. Values are presented as means ± standard deviation or medians (interquartile range) for continuous variables and count (percentage) for categorical variables. Enrolled patients were divided into lower peritoneal UA clearance (≤39.8 L/week/1.73m2) and higher peritoneal UA clearance (> 39.8 L/week/1.73m2) group according to its median level
  2. Abbreviations: CCL creatinine clearance, DAPD Day Ambulatory Peritoneal Dialysis, mGFR measured glomerular filtration rate, nPCR normalized protein catabolic rate, PD peritoneal dialysis, PET peritoneal equilibration test, UA uric acid