Table 4 Correlations between normalized urine volume and other parameters in patients on continuous ambulatory (CAPD), automated peritoneal dialysis (APD) and for pooled data.

From: Urine volume as an estimator of residual renal clearance and urinary removal of solutes in patients undergoing peritoneal dialysis

Spearman rho (p-value)

Normalized urine volume

CAPD

APD

Overall

Body mass

0.07

0.30*

0.19t

Height

− 0.07

0.25t

0.12

Body mass index

0.21

0.19

0.19t

Body surface area

0.03

0.30*

0.19t

Total body water

0.09

0.26t

0.18t

Urine urea

− 0.15

0.13

0.04

Urine creatinine

− 0.52**

− 0.23t

− 0.34***

Urine phosphorus

0.09

− 0.07

− 0.03

Urine over serum urea

− 0.09

0.01

− 0.03

Urine over serum creatinine

− 0.18

0.00

− 0.08

Urine over serum phosphorus

0.07

0.04

0.03

Serum urea

− 0.05

0.06

0.03

Serum creatinine

− 0.34*

− 0.26*

− 0.29**

Serum phosphorus

0.15

− 0.16

− 0.06

Renal urea KT/V

0.67***

0.80***

0.75***

Renal urea clearance

0.68***

0.81***

0.77***

Renal creatinine clearance

0.51**

0.67***

0.61***

mGFR

0.57***

0.72***

0.66***

Renal phosphate clearance

0.66***

0.75***

0.72***

Renal urea removal

0.63***

0.88***

0.78***

Renal creatinine removal

0.44**

0.72***

0.60***

Renal phosphorus removal

0.66***

0.73***

0.70***

  1. ***, **, *, t denote p value < 0.001, < 0.01, < 0.05 and < 0.10, respectively.
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