Table 2.
PBDE congeners serum concentration (ng/g lipids) around the 27th week of pregnancy in a population of pregnant women participating in the CHAMACOS study.
| PBDEs | n | LOD range | Percent detection | GM | 95% CI | Min | 25th percentile | Median | 75th percentile | Max |
|---|---|---|---|---|---|---|---|---|---|---|
| ∑PBDEsa | 270 | 0.2–2.6 | 100.0b | 26.5 | 25.0–31.5 | 3.6 | 13.1 | 25.2 | 42.3 | 1338.6 |
| BDE-17 | 268 | 0.2–0.7 | 1.9 | — | — | < LOD | < LOD | < LOD | < LOD | 2.8 |
| BDE-28 | 268 | 0.2–0.7 | 52.2 | 0.6 | 0.5–0.7 | < LOD | < LOD | 0.5 | 1.5 | 29.7 |
| BDE-47 | 270 | 0.8–2.6 | 99.6 | 15.3 | 13.5–17.3 | < LOD | 7.7 | 15.0 | 25.8 | 761.0 |
| BDE-66 | 268 | 0.2–0.7 | 14.9 | — | — | < LOD | < LOD | < LOD | < LOD | 10.1 |
| BDE-85 | 270 | 0.2–0.7 | 47.8 | — | — | < LOD | < LOD | < LOD | 0.6 | 27.4 |
| BDE-99 | 270 | 0.2–0.7 | 99.6 | 4.5 | 3.9–5.1 | < LOD | 2.3 | 4.0 | 6.7 | 298.0 |
| BDE-100 | 270 | 0.2–0.7 | 98.5 | 2.8 | 2.5–3.1 | < LOD | 1.5 | 2.4 | 4.2 | 138.0 |
| BDE-153 | 270 | 0.2–0.7 | 98.5 | 2.4 | 2.1–2.7 | < LOD | 1.3 | 2.1 | 3.8 | 96.9 |
| BDE-154 | 270 | 0.2–0.7 | 41.9 | — | — | < LOD | < LOD | < LOD | 0.6 | 20.6 |
| BDE-183 | 270 | 0.2–0.7 | 30.6 | — | — | < LOD | < LOD | < LOD | 0.4 | 5.9 |
Abbreviations: GM, geometric mean; Max, maximum; Min, minimum. We did not calculate geometric means and their respective 95% CIs for congeners with detection frequencies < 50% (—).
a
Sum of congeners with detection frequencies > 50% (BDEs 28, 47, 99, 100, and 153).
b
Percentage of samples with at least one congener above the LOD.