Table 8.
Geometric Mean PCB levels (ng/g) among population ≥20 years of age, NHANES 1999–2004.
| Geometric Mean 2 (ng/g) (95% CI) | ||||
|---|---|---|---|---|
| Analyte 1 | Controls (n) |
Subjects with Combined Risk Factors for PAH (n) |
Control Levels of PCBs | Levels of PCBs in Subjects with Risk Factors for PAH |
| PCB74 | ||||
| ≥LOD | 1865 | 245 | 11.48 (10.84–12.16) | 15.91 (14.45–17.53) a |
| PCB99 | ||||
| ≥LOD | 1958 | 226 | 8.36 (8.02–8.72) | 10.99 (9.96–12.14) a |
| PCB118 | ||||
| ≥LOD | 1709 | 234 | 15.29 (14.65–15.95) | 21.47 (19.13–24.11) a |
| PCB138 | ||||
| ≥LOD | 1900 | 240 | 33.58 (32.34–34.87) | 42.17 (38.56–46.13) a |
| PCB153 | ||||
| ≥LOD | 1999 | 252 | 46.79 (44.96–48.69) | 58.30 (53.75–63.24) a |
| PCB180 | ||||
| ≥LOD | 1822 | 248 | 37.90 (36.56–39.31) | 45.49 (41.36–50.02) a |
1 Lipid adjusted and log-transformed polychlorinated biphenyls (ng/g); 2 Geometric means calculated after applying NHANES sampling weights.; a PCB levels significantly higher in subjects with combined risk factors for PAH compared to control group (p < 0.05).