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Table 3 Spearman correlation analysis of serum and salivary creatinine

From: Salivary creatinine as a diagnostic tool for evaluating patients with chronic kidney disease

 

All patients

Stage 1

Stage 2

Stage 3

Stage 4

Stage 5

R

0.82

0.16

0.31

0.38

0.42

0.55

P

< 0.001

0.250

0.030

0.005

0.007

< 0.001

  1. Correlation is considered strong at (r = 1.0 to 0.5), moderate at (r = 0.3 to 0.5), weak at (r = 0.1 to 0.3), very weak or no correlation at (r < 0.1)