PCB Residue Levels in Human Adipose Tissue; a Statistical Evaluation by Racial Grouping

摘要

The proportion (or percent) of persons with greater than 3 ppm PCB and the proportion with detectable PCB residue are investigated with an emphasis on comparing differences between racial groups. The chemical analysis technique used to quantify the residue amounts is studied. The technique of using only one isomer (out of many) to quantitate aggregate PCB may result in bias that affect statistical significance levels of the racial differences. Hence, the apparent racial differences could not be confirmed nor denied.