Table 2.
Concentrations of compounds of interest in maternal serum (pg/ml), N = 324.
| Compounds (pg/ml) | Mean ± SD | Median | %>LOQ | Degree of chlorination |
|---|---|---|---|---|
| PCB 74 | 7.91 ± 4.49 | 6.41 | 66.05 | 4 |
| PCB 99 | 10.01 ± 5.51 | 8.77 | 84.26 | 5 |
| PCB 118 | 21.22 ± 12.01 | 18.84 | 99.70 | 5 |
| PCB 138 | 81.66 ± 42.33 | 75.08 | 100 | 6 |
| PCB 153 | 128.70 ± 69.01 | 115.69 | 100 | 6 |
| PCB 156 | 13.22 ± 8.06 | 11.68 | 91.67 | 6 |
| PCB 170 | 44.02 ± 26.10 | 38.73 | 100 | 7 |
| PCB 180 | 82.85 ± 49.16 | 71.27 | 89 | 7 |
| PCB 183 | 12.00 ± 6.96 | 10.52 | 89.51 | 7 |
| PCB 187 | 19.62 ± 12.58 | 16.31 | 97.53 | 7 |
| p,p′-DDT | 23.01 ± 24.56 | 15.00 | 29 | |
| p,p′-DDE | 558.73 ± 439.62 | 417.63 | 100 |
Mean/median serum concentrations of PCB congeners and mean serum concentrations of p,p′-DDT and p,p′-DDE are shown. In addition, the respective standard deviation and percent above the lower limit of detection (LOQ) are given. %>LOQ shows the percentage of observations above the certified reference concentration for the compounds in maternal serum (LOQ).