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Table 6 Wald’s Chi-Square Test Statistics and p-values testing equality of regression coefficients for chemical exposure and cognitive functioning between groups, NHANES 1999-2002

From: A path analysis of multiple neurotoxic chemicals and cognitive functioning in older US adults (NHANES 1999–2002)

Path

Walds Test Statistic

p-value

Walds Test Statistic

p-value

 

Gender (male/female)

Age (above/below mean)

PCB 74 → DSC

0.01

0.91

0.08

0.78

PCB 118 → DSC

0.56

0.46

0.99

0.32

PCB 146 → DSC

0.62

0.43

0.44

0.51

PCB 153 → DSC

1.93

0.16

0.51

0.47

Lead → DSC

0.26

0.61

0.37

0.54