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Table 6 Estimated effects of a ten-fold increase in exposure to mercury and PCB for different values of the PCB measurement error variance.

From: Estimation of health effects of prenatal methylmercury exposure using structural equation models

log(PCB)

error variance

PCB

error cv

Motor Function

Verbal Function

 
  

Mercury

PCB

Mercury

PCB

Overall test

  

p

p

p

p

p

0

0

-1.433

0.027

0.664

0.363

-1.538

0.025

-0.198

0.799

0.012

0.01

0.23

-1.475

0.030

0.740

0.367

-1.523

0.034

-0.261

0.794

0.017

0.02

0.33

-1.534

0.034

0.853

0.362

-1.508

0.048

-0.257

0.796

0.025

0.04

0.46

-1.707

0.052

1.180

0.364

-1.430

0.120

-0.402

0.771

0.064

  1. The last column gives the p-value in the overall likelihood ratio test for no effects of mercury exposure. Information from in-complete observations was taken into account using missing data analysis.