Table 3 Correlations between 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)

Urine volume

CAPD

APD

Overall

Body mass

0.21

0.40**

0.34***

Height

0.07

0.33*

0.23*

Body mass index

0.29t

0.26*

0.28**

Body surface area

0.18

0.42**

0.33**

Total body water

0.25

0.36**

0.30**

Urine urea

− 0.10

0.13

0.07

Urine creatinine

− 0.43*

− 0.21

− 0.28**

Urine phosphorus

0.13

− 0.05

0.00

Urine over serum urea

− 0.02

− 0.01

− 0.01

Urine over serum creatinine

− 0.11

− 0.02

− 0.07

Urine over serum phosphorus

0.11

0.04

0.05

Serum urea

− 0.03

0.09

0.06

Serum creatinine

− 0.31t

− 0.23t

− 0.25*

Serum phosphorus

0.16

− 0.12

− 0.03

Renal urea KT/V

0.71***

0.77***

0.76***

Renal urea clearance

0.73***

0.79***

0.77***

Renal creatinine clearance

0.57***

0.65***

0.62***

mGFR

0.63***

0.69***

0.67***

Renal phosphate clearance

0.70***

0.74***

0.72***

Renal urea removal

0.68***

0.89***

0.82***

Renal creatinine removal

0.56***

0.74***

0.67***

Renal phosphorus removal

0.71***

0.75***

0.74***

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