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Table 3 Pearson’s correlation coefficient between metals and proteins in urine and their potential predictors when analytes were (A) adjusted on the basis of urinary creatinine (A) or of specific gravity (B)

From: The physiological determinants of low-level urine cadmium: an assessment in a cross-sectional study among schoolchildren

  Age BMI U-Cr U-SG U-Cd U-Zn U-Pb U-RBP U-Alb U-A1M U-CC16 U-β2m
(A)
 Age 1.00            
 BMI 0.10 1.00           
 U-Cr 0.07 0.07 1.00          
 U-SG 0.07 0.07 0.84* 1.00         
 U-Cd 0.12 −0.01 −0.34* −0.16# 1.00        
 U-Zn 0.01 −0.08 −0.07 0.02 0.28* 1.00       
 U-Pb −0.04 0.08 −0.04 0.05 0.14$ 0.14$ 1.00      
 U-RBP −0.06 −0.09 −0.06 −0.05 0.12 0.10 0.05 1.00     
 U-Alb −0.03 −0.03 −0.12 −0.22* −0.10 −0.09 −0.10 0.17 1.00    
 U-A1M −0.10 −0.04 −0.18# −0.10 0.18# 0.02 0.10 0.41* −0.07 1.00   
 U-CC16 0.03 −0.05 −0.24# −0.19$ 0.17$ 0.02 0.08 0.37* −0.04 0.58* 1.00  
 U-β2m −0.14$ −0.11 −0.16$ −0.09 0.10 0.05 0.03 0.42* 0.02 0.55* 0.30* 1.00
(B)
 Age 1.00            
 BMI 0.10 1.00           
 U-Cr 0.07 0.07 1.00          
 U-SG 0.07 0.07 0.84* 1.00         
 U-Cd 0.16$ 0.02 0.15$ 0.01 1.00        
 U-Zn 0.03 −0.05 0.29* 0.15$ 0.30* 1.00       
 U-Pb −0.01 0.10 0.27* 0.15$ 0.16$ 0.21* 1.00      
 U-RBP −0.03 −0.06 0.29* 0.08 0.17# 0.22# 0.15$ 1.00     
 U-Alb −0.02 −0.02 0.03 −0.16$ −0.01 0.02 −0.001 0.26* 1.00    
 U-A1M −0.08 −0.03 0.09 −0.003 0.14$ 0.05 0.12 0.43* −0.01 1.00   
 U-CC16 0.05 −0.05 −0.08 −0.14 0.11 0.001 0.07 0.34* −0.04 0.57* 1.00  
 U-β2-m −0.13$ −0.11 0.09 0.01 0.05 0.08 0.06 0.43* 0.08 0.54* 0.28* 1.00
  1. For the units of biomarkers, see Tables 1 and 2. All parameters except age were log transformed. $< 0.05 #< 0.01 *< 0.001