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Table 2 Correlations of external exposure indices and internal PCB-values in all subjects

From: Neuropsychological effects of chronic low-dose exposure to polychlorinated biphenyls (PCBs): A cross-sectional study

 

PCB 28

PCB 101

PCB 138

PCB 153

PCB 180

Total PCB

Age1

0.17

0.17

0.27*

0.27*

0.26*

0.28*

BMI1

0.39**

0.26*

    

Hours of work/week1

0.63***

0.51***

0.19

 

0.21

0.25x

PCB years of exposure1

0.71***

0.54***

0.37**

0.32*

0.39**

0.43***

Weighted total exposure index1

0.71***

0.59***

0.39**

0.33**

0.40**

0.45***

Alcohol/week1

 

0.31*

0.27*

0.24x

 

0.22x

Cigarettes/day1

   

-0.20

-0.26*

-0.17

Alternative vocational sources2

   

0.28*

 

0.18

Leather clothing2

0.24

 

0.24

 

0.33*

0.33*

Consumption of fish2

0.42***

0.27*

    

Consumption of poultry2

    

0.19

 
  1. Note. *: p < 0.05, **: p < 0.01, ***: p < 0.001 nominal α; only correlations with at least a small effect size are given; correlations with potential exposure sources such as indoor installations of chemically treated wood, frequent meat or milk consumption were trivial and are not presented; correlations with large effect sizes are printed in bold.
  2. 1 Spearman rank correlations
  3. 2 Cramer-V.